# Power Relay, Miniature, 4PDT, 240 VAC, 6 A, HF18FH Series, Socket, Non Latching

![Product image](https://novapart.co/image/farnell:4733451/)

**URL**: https://novapart.co/products/HF18FH/A240-4Z13D/power-relay-miniature-4pdt-240-vac-6-a-hf18fh
**SKU**: HF18FH/A240-4Z13D
**Manufacturer**: HONGFA
**Category**: Switches & Relays || Relays || Power Relays
**Price**: €3.4600
**Stock**: 500+
**Lead Time**: 155 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Coil Type | Non Latching |
| Coil Voltage | 240VAC |
| Product Range | HF18FH Series |
| Relay Mounting | Socket |
| Coil Resistance | 16.3kohm |
| Contact Current | 6A |
| Relay Terminals | Plug In |
| Contact Material | Silver Nickel |
| Contact Voltage Vac | 250V |
| Contact Voltage Vdc | 30V |
| Contact Configuration | 4PDT |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4733451/)

## **HF18FF/HF18FH** 

## **MINIATURE INTERMEDIATE POWER RELAY** 

## **Features** 

File No.:E133481 ● Multiple auxiliary functions available ● 2 to 4 pole configurations ” ● Various terminals available File No.:R50147087 ● Gold plated contact available ● ~~@~~ ● Automatic production ● High capacity File No.:CQC09002030026 (DC type) CQC09002030027 (AC type) 

- Multiple auxiliary functions available 

- Transparent dust cover ,various installation types 

**RoHS compliant** 

## **CHARACTERISTICS** 

## **CONTACT DATA** 

|Insulation resistance<br>~~Pp~~|Insulation resistance<br>~~Pp~~|Insulation resistance<br>~~Pp~~|1000M<br>(at 500VDC)<br>;|
|---|---|---|---|
|Dielectric<br>strength<br>~~Q~~<br>~~Pp~~|Between coil & contacts<br>~~Q~~<br>~~Pp~~||1500VAC 1min|
||Between open contacts<br>~~Pp~~<br>Po||1000VAC 1min|
||Between contact sets<br>Po<br>Po||1500VAC 1min|
|Operate time (at nomi. volt.)<br>Po|||20ms max.|
|Release time (at nomi. volt.)|||DC type:15ms max.|
||||AC type:25ms max.|
||||yp<br> DC type (with diode):<br>25ms max.|
|Temperature rise (no-load, at nomi.volt.)<br>2)|||85K max.|
|Shock resistance<br>Functional<br>Destructive||Functional<br>||100m/s<br>2|
|||Destructive<br>||1000m/s<br>2|
|Vibration resistance<br>||||10Hz to 55Hz 1mm DA|
|Humidity|||5% to 85% RH|
|Ambient temperature|||-40<br>to 70|
|Termination|||PCB, Plug-in|
|Unit weight|||Approx. 35.6g|
|Construction|||Dust protected|



Contact arrangement 2C,  3C,4C Contact resistance[1)] 100m max.(at 1A  6VDC) Min.contact load[2)] 5VDC 1mA Contact material see"ORDERING INFORMATION" Contact rating 7A  250VAC/30VDC(2Z/3Z) (Res. load) 6A  250VAC/30VDC(4Z) Max. switching voltage 250VAC / 30VDC Max. switching current 7A(2Z/3Z),6A(4Z) 1750VA/210W(2Z/3Z) Max. switching power 1500VA/180W(4Z) Mechanical endurance 2 x 10[7] OPS 

Electrical endurance[3)] 1 x 10[5] OPS(room temperature) 

**Notes:** 1) The data shown above are initial values. 

- 2) This value is a reference switching limit for light loads, not a guaranteed value. 

- It varies with frequency, environment and reliability. Please verify under actual use. 

- 3) Please refer to the characteristic curves for detailed electrical endurance information.If you need other conditions,please contact us. 

**Notes:** 1) The data shown above are initial values. 

## **COIL** 

- 2) When testing the Temperature rise,please separate test each relay. 

DC type: Approx. 0.8W to 1.1W; Coil power AC type: Approx. 0.9VA to 1.5VA ~~ee[ee]~~ 

## **SAFETY APPROVAL RATINGS** 

2 Form C/3 Form C 7A  250VAC/30VDC Resistive at 70 **UL/CUL** ~~Po~~ c 4 Form C 6A  250VAC/30VDC Resistive at 70 ~~Po~~ © 2 Form C/3 Form C 7A  250VAC/30VDC **TÜV** po 4 Form C 6A  250VAC/30VDC Po 2 Form C/3 Form C 7A  250VAC/30VDC **CQC** Po 4 Form C 6A  250VAC/30VDC Po 

**Notes:** 1)  All values unspecified are at room temperature. 

- 2) Only typical loads are listed above. Other load specifications can be available upon request. 

HONGFA RELAY ISO9001, IATF16949, ISO14001, ISO45001, IECQ QC 080000 CERTIFIED 2026  Rev. 2.00 ~~(a~~ 

70 

## **COIL DATA** 

at 23 

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Voltage Nominal Voltage Pick-up Voltage Drop-out Voltage Max. Voltage Coil Resistance<br>VDC VDC<br>Code VDC VDC [2)]<br>max. [1)] min.<br>005 5 4.0 0.5 5.5 28 x (1 10%)<br>006 6 4.8 0.6 6.6 40 x (1 10%)<br>009 9 7.2 0.9 9.9 90 x (1 10%)<br>012 12 9.6 1.2 13.2 160 x (1 10%)<br>021 21 16.8 2.1 23.1 490 x (1 10%)<br>024 24 19.2 2.4 26.4 640 x (1 10%)<br>030 30 24.0 3.0 33.0 1000 x (1 10%)<br>036 36 28.8 3.6 39.6 1440 x (1 10%)<br>048 48 38.4 4.8 52.8 2560 x (1 15%)<br>060 60 48.0 6.0 66.0 4000 x (1 15%)<br>110 110 80.0 11.0 121.0 12250 x (1 15%)<br>125 125 100.0 12.5 137.5 17360 x (1 15%)<br>220 220 176.0 22.0 242.0 53360 x (1 15%)<br>Voltage Nominal Voltage Pick-up VoltageVAC Drop-out VoltageVAC Max. Voltage Coil Resistance<br>Code VAC VAC [2)]<br>max. [1)] min.<br>A006 6 4.8 1.8 6.6 11 x (1 10%)<br>A012 12 9.6 3.6 13.2 44 x (1 10%)<br>A024 24 19.2 7.2 26.4 177 x (1 10%)<br>A036 36 28.8 10.8 39.6 400 x (1 10%)<br>A048 48 38.4 14.4 52.8 708 x (1 10%)<br>A060 60 48.0 18.0 66.0 1100 x (1 10%)<br>A110 110 3) 80.0 33.0 121 3400 x (1 15%)<br>A120 1203) 88.0 36.0 132 4080 x (1 15%)<br>A220 2203) 160.0 66.0 242 13600 x (1 15%)<br>A230 230 176.0 72.0 253 16300 x (1 15%)<br>A240 2403) 176.0 72.0 264 16300 x (1 15%)<br>A277 277 221.6 83.1 304.7 23590 x (1 15%)<br>A380 380 304 114 418 42540 x (1 15%)<br>**----- End of picture text -----**<br>


- **Notes:** 1) Under ambient temperature, applying more than 80% of rating voltage to coil, relay will take action accordingly. But in order to meet the stated product performance, please apply rated voltage to coli. 

   - 2)  Maximum voltage refers to the maximum voltage which relay coil could endure in a short period of time. 

   - 3) A110:Nominal Voltage(100~110)VAC ; A120:Nominal Voltage(110~120)VAC ; A220:Nominal Voltage(200~220)VAC ; 

   - A240:Nominal Voltage(220~240)VAC ; 110:Nominal Voltage(100~110)VAC ; 125:Nominal Voltage(110~125)VAC 

   - 4) When the 240VAC specification coil test coil temperature rises, the installation pitch needs to be ≥ 6mm. 

## **ORDERING INFORMATION** 

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HF18FF /A 240 -2Z 1 3 G D (XXX)<br>HF18FF: without button<br>Type HF18FH: with button<br>Coil voltage form A: Nil: AC  DC(50Hz or 60Hz)<br>Coil voltage See "COIL DATA"<br>Contact arrangement 2Z:  2 Form C   3Z:  3 Form C   4Z:  4 Form C<br>Mounting Termination<br>1:  Socket   2:  PCB    5 [1)] :  Flange-Mounting<br>( See the following )<br>Contact material 3:  AgNi              T:  AgSnO2<br>Contact plating Nil:  No gold plated G:  Gold plated<br>Component code [5)] Nil:  Without Component     D:  with LED<br>J:   with diode                      DJ:   with LED and diode<br>Special code [6)] XXX:  Customer special requirement            Nil:  Standard<br>**----- End of picture text -----**<br>


71 

**Notes:** 1) HF18FH without Flange-Mounting Termination,Please choose HF18FF when ordering. 

- 2) Free-wheeling diode is available for DC coil relay, CR circuit is available for AC coil relay. 

- 3) The customer's special requirement express as special code after evaluating by Hongfa. 

- 4) We can provide (136) Economic model relays, the specific performance is subject to the Specifications Data Sheet, please contact us. 5) For coil specifications of 110VDC and above, it is recommended that the customer add the coil protection measures in the circuit. 6) For products that should meet the explosion-proof requirements of "IEC 60079 series",please note [Ex] after the specification while placing orders.Not all products have explosion-proof certification,so please contact us if necessary. 

## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

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Unit: mm<br>**----- End of picture text -----**<br>


## Outline Dimensions 

HF18FF /□□ -2Z1 □□□□ 

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13.2<br>1 4<br>5 8<br>9 12<br>13 14<br>21.5max<br>**----- End of picture text -----**<br>


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2.5x0.5(8 terminals) 0.5<br>**----- End of picture text -----**<br>


HF18FF /□□ -2Z2 □□□□ 

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HF18FF /□□ -2Z5 □□□□ 

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21.5max<br>13.2<br>3.5<br>1 4<br>5 8<br>9 12<br>13 14<br>2<br>36max 6 2.5x0.5(8 terminals)<br>**----- End of picture text -----**<br>


72 

**OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

Unit: mm 

## Outline Dimensions 

HF18FF /□□ -3Z1 □□□□ 

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13.2<br>6.6<br>1 2 3<br>4 5 6<br>7 8 9<br>13 14<br>21.5max<br>**----- End of picture text -----**<br>


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2.5x0.5(11 terminals) 0.5<br>**----- End of picture text -----**<br>


HF18FF /□□ -3Z2 □□□□ 

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13.2<br>6.6<br>1 2 3<br>4 5 6<br>7 8 9<br>13 14<br>21.5max<br>**----- End of picture text -----**<br>


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HF18FF /□□ -3Z5 □□□□ 

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21.5max<br>13.2<br>6.6<br>3.5<br>1 2 3<br>4 5 6<br>7 8 9<br>13 14<br>2<br>36max 6 2.5x0.5(11 terminals)<br>**----- End of picture text -----**<br>


73 

**OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** Unit: mm 

## Outline Dimensions 

HF18FF /□□ -4Z1 □□□□ 

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13.2<br>4.4<br>1 2 3 4<br>5 6 7 8<br>9 10 11 12<br>13 14<br>21.5max<br>**----- End of picture text -----**<br>


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2.5x0.5(14 terminals) 0.5<br>**----- End of picture text -----**<br>


HF18FH /□□ -4Z2 □□□□ 

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13.2<br>4.4<br>1 2 3 4<br>5 6 7 8<br>9 10 11 12<br>13 14<br>21.5max<br>**----- End of picture text -----**<br>


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HF18FF /□□ -4Z5 □□□□ 

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21.5max<br>13.2<br>4.4<br>3.5<br>1 2 3 4<br>5 6 7 8<br>9 10 11 12<br>13 14<br>2<br>2.5x0.5(14 terminals)<br>36max 6<br>**----- End of picture text -----**<br>


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## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** Unit: mm 

## Outline Dimensions 

HF18FH /□□ -2Z1 □□□□ 

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0.5<br>2.5x0.5(8 terminals)<br>**----- End of picture text -----**<br>


HF18FH /□□ -2Z2 □□□□ 

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0.5<br>1x0.5(8 terminals)<br>**----- End of picture text -----**<br>


HF18FH /□□ -3Z1 □□□□ 

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13.2<br>6.6<br>1 2 3<br>4 5 6<br>7 8 9<br>13 14<br>21.5max<br>2.5x0.5(11 terminals) 0.5<br>**----- End of picture text -----**<br>


75 

**OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** Unit: mm 

## Outline Dimensions 

HF18FH /□□ -3Z2 □□□□ 

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13.2<br>6.6<br>1 2 3<br>4 5 6<br>7 8 9<br>13 14<br>21.5max<br>**----- End of picture text -----**<br>


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1x0.5(11 terminals) 0.5<br>**----- End of picture text -----**<br>


HF18FH /□□ -4Z1 □□□□ 

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13.2<br>4.4<br>1 2 3 4<br>5 6 7 8<br>9 10 11 12<br>13 14<br>21.5max<br>**----- End of picture text -----**<br>


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HF18FH /□□ -4Z2 □□□□ 

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13.2<br>4.4<br>1 2 3 4<br>5 6 7 8<br>9 10 11 12<br>13 14<br>21.5max<br>**----- End of picture text -----**<br>


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1x0.5(14 terminals) 0.5<br>**----- End of picture text -----**<br>


76 

Unit: mm 

## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

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PCB Layout<br>(Bottom view)<br>**----- End of picture text -----**<br>


Mounting Holes 

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2x 3.5<br>2 Form C 3 Form C 4 Form C<br>13.2<br>13.2 13.2 4.4<br>8x 1.3 11x 1.3 14x 1.3<br>**----- End of picture text -----**<br>


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Wiring Diagram<br>(Bottom view)<br>2 Form C 3 Form C 4 Form C<br>1 4 1 2 3 1 2 3 4<br>5 8 4 5 6 5 6 7 8<br>9 12 7 8 9 9 10 11 12<br>13 14 13 14 13 14<br>2 Form C (With LED) 3 Form C (With LED) 4 Form C (With LED)<br>1 4 1 2 3 1 2 3 4<br>5 8 4 5 6 5 6 7 8<br>9 12 7 8 9 9 10 11 12<br>13 14 13 14 13 14<br>2 Form C 3 Form C 4 Form C<br>(DC, With fly-wheel diode) (DC, With fly-wheel diode) (DC, With fly-wheel diode)<br>1 4 1 2 3 1 2 3 4<br>5 8 4 5 6 5 6 7 8<br>9 12 7 8 9 9 10 11 12<br>13 _ +14 13 _ +14 13 _ +14<br>**----- End of picture text -----**<br>


- Remark: 1)  In case of no tolerance shown in outline dimension: outline dimension ≤ 1mm, tolerance should be ±0.2mm; outline dimension ＞ 1mm and ≤ 5mm, tolerance should be ±0.3mm; outline dimension ＞ 5mm, tolerance should be ±0.4mm. 

   - 2)  The tolerance without indicating for PCB layout is always ±0.1mm. 

   - 3)  DC products with fly-wheel diode,please confirm the positive and negative terminals before wiring. 

77 

## **CHARACTERISTIC  CURVES** 

MAXIMUM SWITCHING POWER (2 Form C/3 Form C) 

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<x eee & 2012 ERE ttt tt<br>2 10 COMAeo AC Resistive  Load HH<br>c S 73 COO NW OVEN S AC Inductive  cosØ=0.4 tt load<br>5 1 F RR<br>DC Inductive Lo a d A  TS<br>0.5<br>0.3 CA DC Inductive load ANS<br>0.1 iii 1 LETT 3 5 10L/R=7ms30 50 Ae inn 100 250 mill 500<br>Contact Voltage (V)<br>**----- End of picture text -----**<br>


## MAXIMUM SWITCHING POWER 

(4 Form C) 

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x 20 ere rere] ee rere Fe SE<br>4 —— oo<br>< 12 | a<br>o= LT<br>10 AC Resistive Load<br>6<br>AC Inductive load<br>BANK i= 3 PT [TAT] NV IN TN 4 1 cosØ=0.4<br>1<br>8 0.5 COMICON DC Resistive Load<br>0.3 DC Inductive loadL/R=7ms<br>CI COIN PCT<br>0.1<br>1 E 3 5 10 30 E 50 100 250 500<br>**----- End of picture text -----**<br>


Contact Voltage (V) 

RES. LOAD ENDURANCE CURVE (2 Form C/3 Form C) 

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i a CO SO<br>DC 30V<br>(=)fon} ee 100 Eo |<br>oO a aSS Ya<<<br>AC 250V<br>od© KF.SSK ft<br>ed _—— oo<br>10<br>5 eese ee |<br>a eS CO |<br>eo) a a<br>0 ft 1.0 2.0 tt 3.0 4.0 ttt 5.0 6.0 7.0<br>**----- End of picture text -----**<br>


Contact Current (A) 

RES. LOAD ENDURANCE CURVE (4 Form C) 

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DC 30V<br>(=) 100 e e e<br>oOOo© Na LI} [S] N a, a [A] 1} [f]  f<br>a 10 AC 250V<br>s5 LI’ee[bh J<br>Qa a eS |<br>fe) a a<br>0 Ft 1.0 2.0 | 3.0 |Tye 4.0 5.0 6.0 7.0<br>Contact Current (A)<br>**----- End of picture text -----**<br>


INDUCTIVE LOAD ENDURANCE CURVE (2 Form C/3 Form C) 

INDUCTIVE LOAD ENDURANCE CURVE (4 Form C) 

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aa5 100 EN DC 30V Inductive loadL/R=7ms re 100<br>= _——————— = ——————— DC 30V Inductive loadL/R=7ms<br>=Se |a AC 250V Inductive load cosØ=0.4 f/feteeeare || ~—x<fe=f |SSNSaA,SliS Ss|4|<br>2 es | 2 rs AC 250V Inductive load A a nd |<br>cosØ=0.4<br>E o y 10 ———— | | | s © 10 _ _,SS|||<br>a<br>Q|eSa SS |RS | fe)Qa eS a Se | |<br>0 0.5 1.0 1.5 2.0 0 0.5 1.0 1.5 2.0<br>Contact Current (A) Contact Current (A)<br>**----- End of picture text -----**<br>


78 

## **Relay Sockets** 

## **Features** 

- The dielectric strength can reach 2000VAC 

- and the insulation resistance is 1000M 

- Three mounting types are available: PCB mounting 

- screw mounting and DIN rail mounting. 

- With finger protection device 

- Many kinds of Plug-in modules are available 

- with the function of energizing indication and wiring protection. 

- Components available: retainer, marker and plug-in 

CE a File No.: E253370 

- module 

**RoHS compliant** 

## **CHARACTERISTICS** 

|Type|Nominal<br>Voltage<br>~~ee~~<br>ee|Nominal<br>Current<br>ee<br>ee|Ambient<br>Temperature<br>~~ee~~<br>ee|Dielectric Strength<br>min.<br>~~ee~~<br>ee|Screw<br>Torque<br>ee<br>ee|Wire Strip<br>Length<br>ee|Unit weight<br>ee|
|---|---|---|---|---|---|---|---|
|18FF-2Z-A2|250VAC<br>~~ee~~ <br>ee<br>eei|7A<br> ee<br>ee<br>iee|-40<br>to 70<br>~~ee ~~<br>ee<br>ee|2000VAC<br> ~~ee~~<br>ee<br>ee|－<br>ee <br>ee<br>ee|*<br> ee<br>ee|Approx.8g<br>ee|
|18FF-2Z-C2|250VAC<br>ee<br>eei<br>ee|7A<br>ee <br>iee<br>ee|-40<br>to 70<br> ee<br>ee<br>ce|2000VAC<br>ee <br>ee|0.8N·m<br> ee<br>ee|7mm<br>ee|Approx.36g|
|18FF-2Z-C4|250VAC<br>eei<br>ee<br>es|7A<br>iee<br>ee<br>es|-40<br>to 70<br>ee<br>ce<br>ceee|2000VAC<br>ee<br>ee|0.6N·m<br>ee<br>ee|7mm<br>ee<br>ee|Approx.53g|
|18FF-2Z-C5|250VAC<br>ee <br>es<br>ee|7A<br> ee <br>es<br>ee|-40<br>to 70<br> ce<br>ceee<br>ee|2000VAC<br>ee<br>ee|0.6N·m<br>ee<br>ee|7mm<br>ee|Approx.64g|
|18FF-2Z-C8|250VAC<br>es <br>ee<br>eei|7A<br> es <br>ee<br>iee|-40<br>to 70<br> ceee<br>ee<br>ee|2000VAC<br>ee<br>ee<br>ee|0.6N·m<br>ee<br>ee<br>ee|7mm<br>ee<br>ee|Approx.41g|
|18FF-2Z-C9|250VAC<br>ee<br>eei<br>a|7A<br>ee <br>iee<br>ee|-40<br>to 70<br> ee<br>ee<br>oe|2000VAC<br>ee<br>ee|－<br>ee<br>ee|7mm<br>ee|Approx.70g|
|18FF-2Z-C10|300VAC/DC<br>eei<br>a<br>a|10A<br>iee<br>ee<br>ee|-40<br>to 70<br>ee<br>oe|2000VAC<br>ee|－<br>ee|10mm<br>ee|Approx.57g|
|18FF-2Z-C10/P|300VAC/DC<br>a<br>a<br>es|10A<br>ee<br>ee<br>ee|-40<br>to 70<br>oe<br>es|2000VAC|－|10mm|Approx.58g|
|18FF-3Z-C4|250VAC<br>a<br>es<br>ee<br>ee|7A*<br>ee<br>ee<br>ee<br>|-40<br>to 70<br>es<br>ee|2000VAC<br>ee|0.6N·m<br>ee<br>ee|7mm<br>ee|Approx.59g|
|18FF-3Z-C5|250VAC<br>es <br>ee<br>eei<br>ee|7A*<br> ee <br>ee<br>i<br>|-40<br>to 70<br> es<br>ee<br>es<br>|2000VAC<br>ee<br>es|0.6N·m<br>ee<br>ee|7mm<br>ee|Approx.71g|
|18FF-4Z-A2|250VAC<br>ee <br>eei<br>ee<br>es|7A*<br> ee<br>i<br>**es**|-40<br>to 70<br>ee<br>es<br>**ce**|2000VAC<br>ee<br>es|－<br>ee<br>ee|*<br>ee|Approx.8g|
|18FF-4Z-C1|250VAC<br>eei<br>ee<br>es|7A*<br>i<br>**es**|-40<br>to 70<br>es<br>**ce**|2000VAC<br>es<br>ee|0.8N·m<br>ee|7mm|Approx.58g|
|18FF-4Z-C2|250VAC<br>i<br>ee <br>es<br>ee|7A*<br>i<br> **es**<br>ee|-40<br>to 70<br>es<br>**ce**<br>ee|2000VAC<br>es<br>ee<br>ee|0.8N·m<br>ee|7mm<br>ee|Approx.59g|
|18FF-4Z-C4|250VAC<br> <br>es<br>ee<br>eei|7A*<br> **es** <br>ee<br>i|-40<br>to 70<br> **ce**<br>ee<br>ec|2000VAC<br>ee<br>ee|0.6N·m<br>ee|7mm<br>ee|Approx.64g|
|18FF-4Z-C5|250VAC<br>ee<br>eei<br>ee|7A*<br>ee <br>i<br>es|-40<br>to 70<br> ee<br>ec<br>ee|2000VAC<br>ee|0.6N·m<br> ee|7mm<br> ee|Approx.76g|
|18FF-4Z-C8|250VAC<br>eei<br>ee<br>es|7A*<br>i <br>es<br>ee|-40<br>to  70<br> ec<br>ee<br>ce|2000VAC|0.6N·m|7mm|Approx.51g|
|18FF-4Z-C9|250VAC<br>ee <br>es<br>ee|7A*<br> es <br>ee<br>ee|-40<br>to 70<br> ee<br>ce<br>ee|2000VAC<br>ee|－<br>ee|7mm<br>ee|Approx.81g|
|18FF-4Z-C10|300VAC/DC<br>es <br>ee<br>ee|6A*<br> ee <br>ee<br>ee|-40<br>to  70<br> ce<br>ee<br>ce|2000VAC<br>ee|－<br>ee|10mm<br>ee|Approx.65g|
|18FF-4Z-C10/P|300VAC/DC<br>ee<br>ee|6A*<br>ee <br>ee|-40<br>to 70<br> ee<br>ce|2000VAC<br>ee|－<br>ee|10mm<br> ee|Approx.66g|



79 

## **CHARACTERISTICS** 

|Type<br>po}|Nominal<br>Voltage<br>Nominal<br>Current<br>po}|Nominal<br>Current<br>cf|Ambient<br>Temperature<br>cfveef]|Dielectric Strength<br>min.<br>ef]|Screw<br>Torque|Wire Strip<br>Length|Unit weight|
|---|---|---|---|---|---|---|---|
|18FZ-2Z-C2<br>po}|250VAC<br>7A<br>po}<br>es|7A<br>-40<br>cf<br>|-40<br>to 70<br>cfveef]<br>|2000VAC<br>ef]<br>|0.8N·m<br>|7mm<br>|Approx.30g|
|18FZ-4Z-C2<br>po}|250VAC<br>5A<br>po} <br>es|5A<br>-40<br> cf<br>|-40<br>to 70<br>cf ve ef]<br>|2000VAC<br>ef]<br>|0.8N·m<br>|7mm<br>|Approx.44g|
|18FF-2Z-C2(734)<br>po}|250VAC<br>12A<br>esee<br>po}|12A<br>-40<br>ee<br>df|-40<br>to 70<br>ee<br>dfee|2000VAC<br>ee<br>||0.8N·m<br>ee|7mm<br>ee|Approx.36g|
|18FF-2Z-C4(734)<br>po}<br>po}|250VAC<br>12A<br>ee<br>po}<br>po}|12A<br>-40<br>ee<br>df<br>cf|-40<br>to 70<br>ee<br>dfee<br>cfee|2000VAC<br>ee<br>|<br>||0.6N·m<br>ee|7mm<br>ee|Approx.53g|
|18FF-2Z-C5(734)<br>po}<br>po}|250VAC<br>12A<br>po}<br>po}|12A<br>-40<br>df<br>cf|-40<br>to 70<br>df ee <br>cfee|2000VAC<br> |<br>||0.6N·m|7mm|Approx.64g|
|18FF-3Z-C5(734)<br>po}|250VAC<br>10A<br>po}<br>ee|10A<br>-40<br>cf<br>ee|-40<br>to 70<br>cf ee <br>ee|2000VAC<br> |<br>ee|0.6N·m<br>ee|7mm<br>ee|Approx.71g|



Remark: For sockets marked *, their group of current totally should be not more than 20A. 

## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

Unit: mm 

**==> picture [446 x 455] intentionally omitted <==**

**----- Start of picture text -----**<br>
Socket Outline Dimensions Wiring Diagram PCB Layout ComponentsAvailable<br>18FF-2Z-A2 > 21.5<br>— 13.2<br>Metallic retainer<br>4<br>2.8 18FF-H1<br>15.7 8x 1.3<br>13.2<br>(Top View)<br>PCB Terminal,<br>PCB mounting<br>Applicable for 2 poles<br>18FF-2Z-C2 30.6 2x4.2x5 6<br>18FF-2Z-C2(734)<br>2x 4.5<br>3.4<br>4 1<br>8 5 Metallic retainer<br>18FF-H2<br>( be used in sets )<br>12 9<br>1 4 13<br>(Top View)<br>Screw Terminal, 15<br>DIN rail or Screw mounting, 22<br>With finger protection device<br>Applicable for 2 poles (Top View)<br>18FF-2Z-C4<br>18FF-2Z-C4(734) 42.6 Plastic retainer<br>27.2<br>24 18FF-H4<br>448 145 NO<br>3.4 424 121 NC 22 Metallic retainer<br>18FF-H5<br>Marker<br>2x    3<br>A214 A113 COIL 18FF-M1<br>4112 119 COM<br>Screw Terminal, Plug-in module<br>DIN rail or Screw mounting, (Top View) (Top View) HFAA to HFHU*<br>With finger protection device<br>Applicable for 2 poles<br>**----- End of picture text -----**<br>


**Notes:** * Please refer to the product datasheet if Plug-in module is required. 

80 

**==> picture [444 x 638] intentionally omitted <==**

**----- Start of picture text -----**<br>
OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT Unit: mm<br>Socket Outline Dimensions Wiring Diagram PCB Layout ComponentsAvailable<br>18FF-2Z-C5 61.1 Plastic retainer<br>18FF-2Z-C5(734) 42.6<br>24.1 27.2 18FF-H4<br>12 9 COM<br>41 11<br>3.4 | 444284 121415 ! NONC 22 Metallic retainer18FF-H5<br>Marker<br>2x    3<br>18FF-M1<br>A2 A2 A1<br>om 14 14 13 COIL |<br>Screw Terminal, Plug-in module<br>(Top View)<br>DIN rail or Screw mounting,With finger protection device 29.1 (Top View) HFAA to HFHU*<br>Applicable for 2 poles<br>18FF-2Z-C8 29 Plastic retainer<br>29<br>19 18FF-H4<br>448 145 NO<br>4 424 121 NC 24.2 Metallic retainer<br>18FF-H5<br>A > oe 3 8 Marker<br>2x   3<br>5 ise A214 A113 COIL 18FF-M3<br>Screw Terminal, — Oalog 4112 119 ! COM<br>DIN rail or Screw mounting, Plug-in module<br>With finger protection device (Top View) (Top View)<br>HFAA to HFHU*<br>Applicable for 2 poles<br>18FF-2Z-C9 42.5 30.6<br>24 P| Plastic retainer<br>1241 119 COM 18FF-H4<br>448 145 NO<br>3.4 424 121 NC Metallic retainer<br>aan Oe B o a 18FF-H5<br>Plug-in module<br>HFAA ~ HFHU*<br>as a ae A214 A113 COIL<br>Spring-loaded terminal Marker<br>(Top View)<br>DIN rail mounting 18FF-M3<br>With finger protection device<br>Applicable for 2 poles — 27 E (Top View) F A<br>18FF-2Z-C10<br>42.5 30.6 Retainer*<br>18FF-H4<br>42 44 12 14 18FF-H5<br>A2<br>Jumper*<br>18FF-J2<br>A1<br>Marker*<br>OE breast 41 is 11 18FF-M1<br>Plug-in module*<br>: a HFAA~HFHU<br>**----- End of picture text -----**<br>


**Notes:** * Please refer to the product datasheet if Plug-in module is required. 

81 

## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

|Socket|Outline Dimensions<br>~~ee~~|PCB Layout<br>~~ee~~|PCB Layout<br>~~ee~~|Components<br>Available|
|---|---|---|---|---|
|18FF-2Z-C10/P|30.6<br>42.5<br>~~ee~~<br>:|A1<br>A2<br>11<br>41<br>12<br>42 44<br>14<br>~~ee~~<br>~~c UN,~~||Retainer*<br>18FF-H4<br>18FF-H5<br>Jumper*<br>18FF-J2<br>Marker*<br>18FF-M1<br>Plug-in module*<br>HFAA~HFHU|
|Screw Terminal,<br>DIN rail or Screw mounting,<br>With finger protection device<br>Applicable for 3 poles<br>18FF-3Z-C4|3.4<br>(Top View)<br>27.2<br>42.6<br>24<br>~~=F~~<br>~~Bee ~~<br>~~eel~~|(Top View)<br>31<br>9<br>21<br>8<br>11<br>7<br>14<br>4<br>24<br>5<br>34<br>6<br>32<br>3<br>22<br>2<br>12<br>1<br>A2<br>14<br>A1<br>13<br>COM<br>NO<br>NC<br>COIL<br> ~~od~~<br>a~~)~~|22<br>2-    3|Plastic retainer<br>18FF-H4<br>Metallic retainer<br>18FF-H5<br>Marker<br>18FF-M1<br>Plug-in module<br>HFAA to HFHU*|
|Screw Terminal,<br>DIN rail or Screw mounting,<br>Witht finger protection device<br>Applicable for 3 poles<br>18FF-3Z-C5<br>18FF-3Z-C5(734)|3.4<br>(Top View)<br>27.2<br>29.1<br>24.1<br>61.1<br>42.6<br>~~ae el~~|(Top View)<br>COM<br>NO<br>NC<br>COIL<br>31<br>9<br>21<br>8<br>11<br>7<br>14<br>4<br>24<br>5<br>34<br>6<br>32<br>3<br>22<br>2<br>12<br>1<br>A2<br>14<br>A1<br>13<br>A2<br>14<br>3<br>:<br>:<br>||22<br>2-    3<br> ~~Re~~|Plastic retainer<br>18FF-H4<br>Metallic retainer<br>18FF-H5<br>Marker<br>18FF-M1<br>Plug-in module<br>HFAA to HFHU*|
|PCB Terminal,<br>PCB mounting<br>Applicable for 4 poles<br>18FF-4Z-A2|4<br>2.8<br>15.7<br>(Top View)<br>4.4<br>13.2<br>21.5<br>~~|~~<br>(~~EC~~||13.2<br>14x<br>1.3<br>4.4<br>(Top View)|Metallic retainer<br>18FF-H1|



82 

**==> picture [442 x 650] intentionally omitted <==**

**----- Start of picture text -----**<br>
OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT Unit: mm<br>Socket Outline Dimensions Wiring Diagram PCB Layout Components<br>eees Available<br>18FF-4Z-C1<br>6 2x4.2X5 3 2 61 14xM3 x 8 3 2 1 2x 4.5<br>3.4 8 7 6 5<br>8 7 6 5 Metallic retainer<br>18FF-H2<br>( be used in sets )<br>12 11 10 9<br>Ben 12 11 10 9<br>Screw Terminal, 4 14 13 4 14 13<br>DIN rail or Screw mounting, 16.5<br>Withtout finger protection device 30 ee 29 (Top View) 22<br>Applicable for 4 poles (Top View)<br>18FF-4Z-C2 6 2x4.2x5 6 14xM3x8 2x 4.5<br>3 2 1 3 2 1<br>3.4 8 7 6 5<br>8 7 6 5 Metallic retainer<br>18FF-H2<br>( be used in sets )<br>12 11 10 9<br>7 ie 12 11 10 9<br>Screw Terminal, 16.5 4 14 13 4 14 13<br>DIN rail or Screw mounting,With finger protection deviceApplicable for 4 poles 30.630 a: an (Top View)29 Low (Top View) NM _ 22 eo<br>18FF-4Z-C4 42.6<br>27.2<br>24 Plastic retainer<br>448 347 246 145 NO 18FF-H4<br>3.4 424 323 222 121 NC 22 Metallic retainer<br>i 18FF-H5<br>=) == <<br>2xØ3 Marker<br>A214 A113 COIL 18FF-M1<br>4112 3111 1021 119 COM<br>go<br>Plug-in module<br>Screw Terminal,<br>DIN rail or Screw mounting, (Top View) (Top View) HFAA to HFHU*<br>With finger protection device<br>Applicable for 4 poles<br>61.1<br>18FF-4Z-C5 42.6 27.2<br>Plastic retainer<br>24.1<br>1241 1131 1021 119 COM 18FF-H4<br>448 347 246 145 NO<br>3.4 424 323 222 121 NC 22 Metallic retainer<br>18FF-H5<br>2xØ3 Marker<br>18FF-M1<br>A214 A214 A113 COIL<br>(Top View) (Top View) Plug-in module<br>Screw Terminal, a 29.1 HFAA to HFHU*<br>DIN rail or Screw mounting,<br>With finger protection device<br>Applicable for 4 poles<br>**----- End of picture text -----**<br>


**Notes:** * Please refer to the product datasheet if Plug-in module is required. 

83 

## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

Unit: mm 

|Socket|Outline Dimensions|Wiring Diagram|PCB Layout|Components<br>Available|
|---|---|---|---|---|
|Screw Terminal,<br>DIN rail or Screw mounting,<br>With finger protection device<br>Applicable for 4 poles<br>18FF-4Z-C8<br>18FF-4Z-C9<br>Spring-loaded terminal<br>DIN rail mounting<br>With finger protection device<br>Applicable for 2 poles<br>’<br>s<br>¥*<br>=<br>a<br>:<br>BS|4<br>(Top View)<br>29<br>29<br>19<br>~~m~~M<br>t.<br>A~~esssh~~<br>~~>~~<br>~~=) ———-@~~|(Top View)<br>COM<br>NO<br>NC<br>COIL<br>12<br>11<br>10<br>41<br>31<br>21<br>11<br>9<br>14<br>5<br>24<br>6<br>34<br>7<br>44<br>8<br>42<br>4<br>32<br>3<br>22<br>2<br>12<br>1<br>A2<br>14<br>A1<br>13<br>~~pag~~<br>|<br>'|24.2<br>2xØ3<br>~~rn2)~~|*Plastic retainer<br>18FF-H4<br>*Metallic retainer<br>18FF-H5<br>Marker<br>18FF-M3<br>*Plug-in module<br>HFAA to HFHU|
||(Top View)<br>24<br>42.5<br>3.4<br>27<br>30.6<br>—~~_~~<br>~~;~~<br>Py<br>~~pee~~<br>~~eo~~|(Top View)<br>41<br>12<br>11<br>9<br>14<br>5<br>44<br>8<br>42<br>4<br>12<br>1<br>A1<br>13<br>A2<br>14<br>21<br>10<br>24<br>6<br>22<br>2<br>31<br>11<br>34<br>7<br>32<br>3<br>COM<br>NO<br>NC<br>COIL<br>~~ah~~||Plastic retainer<br>18FF-H4<br>Metallic retainer<br>18FF-H5<br>Plug-in module<br>HFAA ~ HFHU*<br>Marker<br>18FF-M3|
|18FF-4Z-C10|30.6<br>42.5<br>~~es~~<br>~~(iain)~~<br>~~F~~<br>~~go00 0000~~<br>~~gogo~~<br>~~| |[a~~<br>~~jt~~<br>~~BSS~~|A1<br>A2<br>11<br>21<br>31<br>41<br>12<br>22<br>32<br>42 44<br>34<br>24<br>14<br>~~t+ © oOon~ NOT~~<br>~~YW~~<br>~~PTL~~||Retainer*<br>18FF-H4<br>18FF-H5<br>Jumper*<br>18FF-J2<br>Marker*<br>18FF-M1<br>Plug-in module*<br>HFAA~HFHU|
|18FF-4Z-C10/P|30.6<br>42.5<br>~~EGEpeanaD~~<br>~~F~~<br>~~g000 0000~~<br>~~QO O08~~<br>~~=~~<br>~~ee~~|A1<br>A2<br>11<br>21<br>31<br>41<br>12<br>22<br>32<br>42 44<br>34<br>24<br>14<br>~~to On Noro~~||Retainer*<br>18FF-H4<br>18FF-H5<br>Jumper*<br>18FF-J2<br>Marker*<br>18FF-M1<br>Plug-in module*<br>HFAA~HFHU|



**Notes:** * Please refer to the product datasheet if Plug-in module is required. 

84 

**==> picture [36 x 7] intentionally omitted <==**

**----- Start of picture text -----**<br>
Unit: mm<br>**----- End of picture text -----**<br>


## **OUTLINE DIMENSIONS, WIRING DIAGRAM AND PC BOARD LAYOUT** 

**==> picture [443 x 538] intentionally omitted <==**

**----- Start of picture text -----**<br>
Socket Outline Dimensions Wiring Diagram PCB Layout Components<br>Available<br>30.6 2x4.2x5 6<br>18FZ-2Z-C2 a7 2x e 4.5<br>3.4<br>4 1<br>8 5 Metallic retainer<br>18FF-H2<br>(Used in pairs ）<br>12 9<br>1 4 13<br>15<br>(Top View)<br>Screw Terminal, = al 22<br>DIN rail or Screw mounting,<br>(Top View)<br>With finger protection device<br>18FZ-4Z-C2 30 2x4.2x5 6<br>—— — 2x ° 4.5<br>3 2 1 14xM3<br>3 2 1<br>8 7 6 5 8 7 6 5<br>*Metallic retainer<br>18FF-H2<br>( be used in sets )<br>12 11 10 9<br>4 14 13<br>12 11 10 9<br>3.4 4 14 13 (Top View) 22<br>Screw Terminal,<br>DIN rail or Screw mounting, L : rSEEa 29 l<br>With finger protection device<br>(Top View)<br>Notes:   * Please refer to the product datasheet if Plug-in module is required.<br>DIMENSION OF RELATED COMPOENT (AVAILABLE) Unit: mm<br>Retainer<br>18FF-H1 (Metallic retainer) 18FF-H2 (Metallic retainer) 18FF-H3(Metallic retainer)<br>26.1<br>4 _<br>:<br>03 : wo] \ / * _<br>qe1 12 P 4.5 3 ¢ ~ , 7 J Co ]<br>18FF-H4 (Plastic retainer) 18FF-H5 (Metallic retainer)<br>**----- End of picture text -----**<br>


**Notes:** * Please refer to the product datasheet if Plug-in module is required. 

**==> picture [79 x 40] intentionally omitted <==**

**----- Start of picture text -----**<br>
23.7<br>0.08<br>**----- End of picture text -----**<br>


**==> picture [95 x 6] intentionally omitted <==**

**----- Start of picture text -----**<br>
22.8 26.5<br>**----- End of picture text -----**<br>


85 

## **DIMENSION OF RELATED COMPOENT (AVAILABLE)** 

Unit: mm 

**==> picture [146 x 95] intentionally omitted <==**

**----- Start of picture text -----**<br>
Marker<br>18FF-M1<br>26.2<br>9.2<br>**----- End of picture text -----**<br>


**==> picture [162 x 85] intentionally omitted <==**

**----- Start of picture text -----**<br>
18FF-M3<br>1.5<br>15.6 6.5<br>**----- End of picture text -----**<br>


## **SELECTION OF PARTS** 

|Type of Relay|Mounting termination|<br>Socket||Retainer|Marker|Module|
|---|---|---|---|---|---|---|
|HF18FF/□□-2Z1□□□|Without button|18FF-2Z-A2||18FF-H1|-|-|
|||18FF-2Z-C1||18FF-H2/H3|||
|||18FF-2Z-C2|||||
|||18FZ-2Z-C2|||||
|||18FF-2Z-C4||18FF-H4/H5|18FF-M1|HFAA~HFHU|
|||18FF-2Z-C5|||||
|||18FF-2Z-C8|||18FF-M3||
|||18FF-2Z-C9|||||
|HF18FF/□□-3Z1□□□||18FF-3Z-C4|||18FF-M1||
|||18FF-3Z-C5|||||
|HF18FF/□□-4Z1□□□||18FF-4Z-A2||18FF-H1|-|-|
|||18FF-4Z-C1||18FF-H2|||
|||18FF-4Z-C2|||||
|||18FZ-4Z-C2|||||
|||18FF-4Z-C4||18FF-H4/H5|18FF-M1|HFAA~HFHU|
|||18FF-4Z-C5|||||
|||18FF-4Z-C8|||||
||||||18FF-M3||
|||18FF-4Z-C9|||||
|HF18FH/□□-2Z1□□□|With button|18FF-2Z-C4<br>18FF-2Z-C5||18FF-H4/H5|18FF-M1||
||||||||
|||18FF-2Z-C8|||||
|||18FF-2Z-C9|||18FF-M3||
|HF18FH/□□-3Z1□□□||18FF-3Z-C4|||||
|||18FF-3Z-C5|||18FF-M1||
|||18FF-4Z-C4|||||
|HF18FH/□□-4Z1□□□||18FF-4Z-C5|||||
||||||18FF-M1||
|||18FF-4Z-C8|||||
|||18FF-4Z-C9|||18FF-M3||
|HF18FF-G/□□-2Z1□□□|Without button|18FF-2Z-C1(734)||18FF-H2/H3|-|-|
|||18FF-2Z-C2(734)|||||
|||18FF-2Z-C4(734)||18FF-H4/H5|18FF-M1|HFAA~HFHU|
|||18FF-2Z-C5(734)|||||
|HF18FF-G/□□-3Z1□□□||18FF-3Z-C5(734)|||||
|HF18FH-G/□□-2Z1□□□|With button|18FF-2Z-C4(734)|||||
|||18FF-2Z-C5(734)|||||
|HF18FH-G/□□-3Z1□□□||18FF-3Z-C5(734)|||||



86 

## **Precautions For Use** 

For your personal safety and the normal operation of the equipment, as well as to prevent fire, please note the following issues : 1.The rated current of the socket should be no less than the rated current of the relay. 

2.Sockets are required to be firmly fixed to prevent the wiring from loosening and affecting the quality of wiring. 

- 3.Be sure to disconnect power to the outlet before installation, disassembly, wiring,    maintenance and inspection. 

- 4.Prevent foreign objects such as wire shavings from falling inside this product when wiring. 

- 5.Be sure to install the relay in place, and use accessories such as retainer if necessary to improve contact reliability. Do not use with incomplete connections. 

- 6.Be sure to observe the relay ratings and do not overload the relay. 

- 7.Before selecting a relay, make sure that the drive voltage matches the relay excitation voltage. 

## Precautions for the use of non-threaded terminal type sockets 

1.Lead end socket description : 

**==> picture [221 x 202] intentionally omitted <==**

**----- Start of picture text -----**<br>
18FF-2Z/4Z-C9<br>COM Wiring holes<br>Screw driver inserting hole<br>NO Wiring holes<br>Screw driver inserting hole<br>Wiring holes<br>NC<br>Screw driver inserting hole<br>Module mounting holes<br>Screw driver inserting hole<br>COIL Wiring holes<br>**----- End of picture text -----**<br>


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Figure 1<br>**----- End of picture text -----**<br>


- 2.Things to be noticed when selecting soft wiring. 

- The soft wiring can be divided into the following types. 

- 0.5mm[2] above 1.5mm[2] below or AWG20 above AWG16 below the stranded wire or a single wire. 

- The front terminal of the wire needs to be peeled off 8mm to 9mm of insulation protection layer, the wire insulation protection layer diameter *2.8mm or less. Please be sure to use according to this size. 

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8~9mm<br>Figure 2<br>**----- End of picture text -----**<br>


87 

## **Precautions For Use** 

- If the protective layer is stripped too short, the wire may be pulled out, and if it is too long, it may be short-circuited to the neighboring wires. If using the stranded wire with cold crimped terminals, please twist the stranded wire tightly before use to avoid loosening the wire. 

When wiring, use a screwdriver as shown in the figure. 

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0.4mm<br>Ø2.5mm<br>**----- End of picture text -----**<br>


Figure 3 

- The insertion position of the wire and the screwdriver and the insertion direction of the screwdriver are as shown in Figure 4. 

**==> picture [401 x 109] intentionally omitted <==**

**----- Start of picture text -----**<br>
No.5 terminal hole<br>No.6 terminal hole<br>Wiring holes<br>Screw driver inserting hole<br>**----- End of picture text -----**<br>


Figure 4 

88 

## **Precautions For Use** 

- When using stranded wires, use cold crimp terminals with or without plastic sleeves for the stranded wires. 

- The method of Wiring as shown in figure 5. 

Step 1. Insert the screwdriver into the screwdriver insertion hole (square hole) of the socket so that the screwdriver is inserted 

in a slightly angled direction until the head of the screwdriver is between the back of the spring terminal and the wall of the cover. 

Step 2. Keep pushing the screwdriver in until it contacts the stop position inside the socket and the junction is released, keeping the screwdriver in that position. The screwdriver will not come off even if the hand is released. 

Step 3. Keeping the screwdriver in the insertion hole, insert the wire or cold crimp terminal to the bottom of the wire insertion hole. 

Step 4. Pull out the screwdriver and the wiring is completed. 

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（ 1 ） （ 2 ）<br>（ 3 ） （ 4 ）<br>OK NG<br>**----- End of picture text -----**<br>


Figure 5 

Note : When using wire with insulation protection diameter of 2mm or less, do not insert the insulated part of the wire into the spring clamp opening position . 

## **Things to be noticed when selecting sockets:** 

1. Please choose suitable relay socket according to the actual mounting environment, relay contact poles and terminal layout. If there is any query on selection, please contact Hongfa for the technical service. 

2. Socket which can be mounted with Markers is furnished with a marker; as for other related components, they should be selected separately. Please do give clear indication of the types of relay sockets and related components you choose while placing order. 

3. The above is only an example of typical socket and related component type which is suitable to HF18FF relay. If you have any special requirements, please contact us. 

4. Main outline dimension, outline dimension ＞ 50mm ,tolerance should be ± 1mm; 20mm ＜ outline dimension ≤ 50mm, tolerance should be ± 0.5mm; 5mm ＜ outline dimension ≤ 20mm, tolerance should be ± 0.4mm; outline dimension ≤ 5mm, tolerance should be ± 0.3mm. 

5. DIN rail mounting: recommend to use standard rail 35 × 7.5 × 1mm, 35 × 15 × 1mm. 

89 

## **Precautions For Use** 

18FF-2Z/4Z-C10 18FF-2Z/4Z-C10/P 

## Applicable conductor cross section 

1x0.5/0.75/1.0/1.5/2.5 mm[2] solid wire 2x0.5/0.75/1.0/1.5 mm[2] Multi-stranded wire without 1x0.5/0.75/1.0/1.5/2.5 mm[2] standard sleeve Multi-stranded 2x0.5/0.75/1.0/1.5 mm[2] Multi-stranded wire 1x0.5/0.75/1.0/1.5 mm[2] ≤ 2.4 with standard sleeve 2x0.5/0.75/1.0 mm[2] 

## Regarding push in socket 

- The screwdriver insertion hole must not be wired. 

- When inserting the screwdriver into the hole, please insert it at an angle. 

- Do not twist or wiggle the screwdriver when it is in the hole, as this may cause damage the socket. 

- Do not forcibly bend or pull on the wire. Otherwise it may result broken wire. 

- Do not insert more than one wires into one wiring hole. 

- To prevent smoke and fire from the wiring material, check the power supply rating and that the wire sleeves used are in accordance with DIN 46228-4. 

The conductors used comply with GB/T 5023.3-2008 (IEC 60227-3) standard. 

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**----- Start of picture text -----**<br>
Recommended Wires Film peel (when bar terminals are not used)<br>0.5~2.5mm [2] / AWG20~14 ≥ 10mm<br>When stranded wire<br>testing port<br>relwir e ase portport<br>2.4<br>X<br>0.4 2.5<br>X<br>**----- End of picture text -----**<br>


90 

## **Precautions For Use** 

## **Things to be noticed when selecting sockets:** 

1. Please choose suitable relay socket according to the actual mounting environment, relay contact poles and terminal layout. If there is any query on selection, please contact Hongfa for the technical service. 

2. Relevant accessories must be selected separately. Please indicate the model of the selected accessories when ordering; 

3. Main outline dimension, outline dimension ＞ 50mm ,tolerance should be ± 1mm; 20mm ＜ outline dimension ≤ 50mm, tolerance should be 

- ± 0.5mm;5mm ＜ outline dimension ≤ 20mm, tolerance should be ± 0.4mm; outline dimension ≤ 5mm, tolerance should be ± 0.3mm. 

4. DIN rail mounting: recommend to use standard rail 35 x7.5 x 1mm, 35 x 15 x 1mm.When installed vertically, the coil terminal at the bottom please . 

## Disclaimer 

The specification is for reference only. See to "Terminology and Guidelines" for more information. Specifications subject to change without notice. We could not evaluate all the performance and all the parameters for every possible application. Thus the user should be in a right position to choose the suitable product for their own application. If there is any query, please contact Hongfa for the technical service. However, it is the user’s responsibility to determine which product should be used only. 

> ©  Xiamen Hongfa Electroacoustic Co., Ltd.  All rights of Hongfa are reserved. 

91 



## Links

- [View this product on Novapart](https://novapart.co/products/HF18FH/A240-4Z13D/power-relay-miniature-4pdt-240-vac-6-a-hf18fh)
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- [Supplier page](https://es.farnell.com/hongfa/hf18fh-a240-4z13d/power-relay-4pdt-6a-240vac-socket/dp/4733451)
---

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