# Safety Relay, w/Gold Plated Contacts, 24 VDC, 4PST-NO, DPST-NC, HFA6 Series, Through Hole, 6 A

![Product image](https://novapart.co/image/farnell:4733534/)

**URL**: https://novapart.co/products/HFA6/24-4H2DTGF/safety-relay-w-gold-plated-contacts-24-vdc-4pst-no
**SKU**: HFA6/24-4H2DTGF
**Manufacturer**: HONGFA
**Category**: Switches & Relays || Relays || Safety Relays
**Price**: €10.0600
**Stock**: 200+
**Lead Time**: 162 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Ip Rating | - |
| Coil Voltage | 24VDC |
| Product Range | HFA6 Series |
| Relay Mounting | Through Hole |
| Contact Current | 6A |
| Relay Terminals | PC Pin |
| Contact Material | Silver Tin Oxide |
| Contact Configuration | 4PST-NO, DPST-NC |
| Contact Voltage Ac Nom | 250V |
| Contact Voltage Dc Nom | 30V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4733534/)

## **HFA6** 

## **FORCE-GUIDED RELAY** 

## **Features** 

- Multi contact arrangements: 5NO+1NC, 

- 4NO+2NC, 3NO+3NC 

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File No.:E134517<br>uv,<br>File No.:B 053286 0043<br>**----- End of picture text -----**<br>


- Forcibly guided contacts according to IEC 61810-3 

- 6A switching capability 

- Low input power: 500mW 

- High insulation capability: 10kV surge voltage between input and output 

- UL insulation system: Class F available 

**RoHS compliant** 

## **CONTACT DATA** 

## **CHARACTERISTICS** 

5NO+1NC (5H1D type) Contact arrangement 4NO+2NC (4H2D type) 3NO+3NC (3H3D type) 

|Insulation resistance|Insulation resistance|1000M<br>(at 500VDC)<br>:|
|---|---|---|
|Dielectric<br>strength<br>||Between coil & contacts<br>~~—~~|4000VAC 1 min|
||Between open contacts<br>~~—~~<br>_<br>||1500VAC 1 min|
||Between contact sets<br>_<br>|<br>EJ|2500VAC 1 min (11-12/13-14)<br>4000VAC 1 min (Other)|
|Surge<br>voltage<br>||Between coil & contacts<br>|<br>EJ|10kV (1.2 / 50µs)|
||Between contact sets<br>EJ<br>Ey|5kV (1.2 / 50µs)|
|Operate time (at rated voltage)<br>Ey||20ms max.|
|Release time (at rated voltage)||20ms max.|
|Temperature rise (at rated voltage)||≤70K (Coil driving voltage:<br>1.1 times Un, Contact current<br>-carrying: rated current, at 85<br>oC)|
|Vibration resistance<br>oo||2<br>NO/NC:10Hz to 55Hz 1.5mm DA<br>NO:55Hz to 200Hz, 98m/s<br>2<br>NC:55Hz to 200Hz, 49m/s<br>2|
|Shock<br>resistance|Functional<br>oo|100m/s<br>2|
||Destructive<br>—_—|980m/s<br>2|
|Creepage<br>distance|Between coil & contacts<br>I<br>—_|8mm|
||Between contacts<br>I<br>—_|5.5mm|
|Clearance<br>distance|Between coil & contacts<br>I<br>—_<br>I|8mm|
||Between contacts<br>_—|5.5mm|
|Humidity<br>_—||5% to 85% RH|
|Ambient temperature||-40<br>oC to 85<br>oC|
|Termination||PCB|
|Unit weight||Approx. 23g|
|Construction<br>~~ee~~||Flux proofed|



Forcibly guided contacts Type A Type(according to lEC61810-3) Contact resistance[1)] 100m ; (at 1A 6VDC) Contact material AgSnO2 Contact rating (Res. load) 6A  250VAC / 30VDC Min.contact load[2)] 5VDC 10mA Max. switching voltage 400VAC / 30VDC Max. switching current 6A Max. switching power 1500VA /180W Mechanical endurance[3)] 1 x 10[7] OPS 1 x 10[5] OPS (1NO: 6A  30VDC, Resistive load, Room temp., 1s on 9s off) Electrical endurance 1 x 10[5] OPS (1NO: 6A  250VAC, Resistive load,  Room temp., 1s on 9s off) i} **Notes:** 1) The data shown above are initial values. ______ 2) Min. contact load is just a reference value in normal temperature, normal humidity, normal pressure environment and with relay pin up, which will vary depending on the power-on and off frequency, environmental conditions, expected lifespan, and installation direction. Thus, please have confirmation tests with actual load before use. And it is recommended to avoid using the relay when the temperature is below 0 ℃ . 

- 3) No loading test, no mechanical damage after the test. 

|Nominal<br>Voltage<br>VDC<br>la|Pick-up<br>Voltage<br>VDC<br>max.1)<br>la|Drop-out<br>Voltage<br>VDC<br>min.1)<br>la|Max.<br>Voltage<br>VDC2)<br>la|Coil resistance<br>la|
|---|---|---|---|---|
|5<br>la|3.8<br>la|0.5<br>la|5.5<br>la|50 x (1<br>10%)<br>la|
|6<br>la|4.5<br>la|0.6<br>la|6.6<br>la|72 x (1<br>10%)<br>la|
|9<br>la|6.8<br>la|0.9<br>la|9.9<br>la|162 x (1<br>10%)<br>la|
|12<br>la|9.0<br>la|1.2<br>la|13.2<br>la|288 x (1<br>10%)<br>la|
|18<br>la|13.5<br>la|1.8<br>la|21.78<br>la|648 x (1<br>10%)<br>la|
|24<br>la|18.0<br>la|2.4<br>la|26.4<br>la|1152 x (1<br>10%)<br>la|
|36<br>la|27.0<br>la|3.6<br>la|39.6<br>la|2592 x (1<br>10%)<br>la|
|48<br>la|36.0<br>la|4.8<br>la|52.8<br>la|4608 x (1<br>10%)<br>la|
|110<br>la|82.5<br>la|11<br>la|121<br>la|24200 x (1<br>10%)<br>la|



**COIL** Coil power Approx. 500mW 

**SAFETY APPROVAL RATINGS** 6A  277VAC / 250VAC / 125VAC at 85oC 6A  30VDC at 85oC **UL/CUL** Pilot duty: 1.5A 240VAC 3A 120VAC **TÜV** 6A  277VAC / 30VDC 1.5A /2A 240VAC(AC-15) 

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

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

## Ck: — 

## HONGFA RELAY 

ISO9001, IATF16949 , ISO14001, ISO45001, IECQ QC 080000, ISO/IEC 27001 CERTIFIED 

2025 Rev. 1.00 

41 

## **ORDERING INFORMATION** 

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HFA6  / 24 -5H1D T G F (XXX)<br>Type<br>5,6, 9, 12, 18, 24,<br>Coil voltage<br>36, 48,110VDC<br>5H1D:  5NO+1NC       4H2D:  4NO+2NC<br>Contact arrangement<br>3H3D:  3NO+3NC<br>Contact material T: AgSnO2<br>Contact plating G:  Gold plated<br>Insulation class F:  Class F<br>Special code [4)] XXX:  Customer special requirement            Nil:  Standard<br>**----- End of picture text -----**<br>


**Notes:** 1) Flux-proofed relays can not be used in the environment with pollutants like H2S, SO2, NO2, dust, etc. 

- 2) Contact is recommended for suitable condition and specifications if water cleaning or surface process is involved in assembling relays on PCB. 

- 3) Avoid contamination with organic solvents for the case using PC materials, otherwise chemical reactions may occur which may cause the shell to swell or crack . 

- 4) The customer special requirement express as special code after evaluating by Hongfa. 

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

Unit: mm 

## HFA6/ □□ -5H1DT □(□□□) 

## Outline Dimensions 

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50max 13<br>2<br>5.08 5.08 5.08 11.43 5.08 13.97 10.16<br>P<br>P direction<br>0.5  0.15<br>**----- End of picture text -----**<br>


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Wiring Diagram<br>(Bottom view)<br>14 13 10 9 6 5 2<br>-<br>+<br>12 11 8 7 4 3 1<br>**----- End of picture text -----**<br>


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PCB Layout<br>(Bottom view)<br>14xØ1.6<br>5.08 5.08 5.08 11.43 5.08 13.97<br>**----- End of picture text -----**<br>


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Unit: mm 

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

## HFA6/ □□ -4H2DT □(□□□) 

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Outline Dimensions<br>50max 13<br>2<br>5.08 5.08 5.08 11.43 5.08 13.97 10.16<br>P<br>**----- End of picture text -----**<br>


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P direction<br>**----- End of picture text -----**<br>


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Wiring Diagram<br>(Bottom view)<br>14 13 10 9 6 5 2<br>-<br>+<br>12 11 8 7 4 3 1<br>**----- End of picture text -----**<br>


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PCB Layout<br>(Bottom view) 14xØ1.6<br>5.08 5.08 5.08 11.43 5.08 13.97<br>**----- End of picture text -----**<br>


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0.5  0.15<br>**----- End of picture text -----**<br>


HFA6/ □□ -3H3DT □(□□□) 

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**----- Start of picture text -----**<br>
Outline Dimensions<br>50max 13<br>2<br>5.08 5.08 5.08 11.43 5.08 13.97 10.16<br>P<br>**----- End of picture text -----**<br>


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Wiring Diagram<br>(Bottom view)<br>14 13 10 9 6 5 2<br>-<br>+<br>12 11 8 7 4 3 1<br>**----- End of picture text -----**<br>


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PCB Layout<br>P direction (Bottom view) 14xØ1.6<br>5.08 5.08 5.08 11.43 5.08 13.97<br>0.5  0.15<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. 

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## **CHARACTERISTIC  CURVES** 

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**----- Start of picture text -----**<br>
MAXIMUM SWITCHING POWER ENDURANCE CURVE<br>=x 10 -——-F = ! | a | =ect CT &: 1000 [|<br>gs5 632 =— = t——HEt‘a CH = = AC ResistiveLoad aleetH  =nHt OoSSF: 100 aanSeS={—=;\eiee=======Ssee=aa——<br>. 1 = =======<br>0.50.30.2 Se= SeSHS e DC Resistive Load r BiSssiit PEtAEA ‘i 10 =—oF= Test conditions: 1NO, Resistive load, 250VAC, Room temp., 1s on 9s offThe data shown above are typical<br>:  Sei 0.1 Tmt i Hill ° 0 sasstaeeFR 1 2 3 4 5 6 7 8 values.<br>10 30 100 200 250 1000 Contact Current (A)<br>Contact Voltage (V)<br>**----- End of picture text -----**<br>


COIL TEMPERATURE RISE 

INDUCTIVE DURABILITY CURVE 

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—ggoa 40353025201510 O 5 Pit eaBeerL ④③②① |_|TSamFtLettt |“era::L | Le7 | ①②③④ 0A 856A 850A 6A  =rT room temp.room tempooCC . :3==:Cc 100050030010050301053 =a=== AC15,240 VAC = ==eFANiis Vv SitHHeeHH a=e DC13,24 VDC StCeCetttsi|ii Test conditions: Connected to IEC61810-1 Appendix B TableB.3 method test, at room temperature, 1NO,<br>0 100 Po 110 120 130 140 l- 1 SoI aae 1s on and 9s off.<br>Percentage Of Nominal Coil Voltage 0.1 0.3 0.5 1 2 3 10<br>Contact Current (A)<br>**----- End of picture text -----**<br>


## 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. 

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- [Supplier page](https://es.farnell.com/hongfa/hfa6-24-4h2dtgf/force-guided-relay-4no-2nc-6a/dp/4733534)
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