RR3B-ULAC120V

**Relays  & Sockets** 

**RR** 

## **RR Series Power Relays** 

## **Key features:** 

- SPDT through 3PDT, 10A contacts 

- Midget power type relays 

- Available in pin and blade terminal styles. 

- Options include an indicator, check button for test operations and side flange. 

- DIN rail, surface and panel mount sockets are available for a wide a variety of mounting applications. 

## **Part Number Selection** 

|||Part Number|Part Number|||
|---|---|---|---|---|---|
|Contact|Model|Pin Terminal|Blade Terminal*|Coil Voltage Code<br>**(Standard Stock Items in Bold)**||
|SPDT|Standard||RR1BA-U0|||
||With Indicator<br>With Check Button<br>With Indicator and Check Button<br>Side Flange Model|—|RR1BA-UL0<br>RR1BA-UC0<br>RR1BA-ULC0<br>RR1BA-US0|||
|DPDT|Standard|RR2P-U0|RR2BA-U0|||
||With Indicator<br>With Check Button|RR2P-UL0<br>RR2P-UC0|RR2BA-UL0<br>RR2BA-UC0|AC6V, AC12V, AC24V, AC110V,<br>AC240V,|AC6V, AC12V, AC24V, AC110V,**AC120V**,|
||With Indicator and Check Button|RR2P-ULC0|RR2BA-ULC0|DC6V, DC12V,|DC6V, DC12V,**DC24V**, DC48V, DC110V|
|3PDT|Side Flange Model<br>Standard|—<br>RR3PA-U0|RR2BA-US0<br>RR3B-U0|||
||With Indicator|RR3PA-UL0|RR3B-UL0|||
||With Check Button|RR3PA-UC0|RR3B-UC0|||
||With Indicator and Check Button|RR3PA-ULC0|RR3B-ULC0|||
||Side Flange Model|—|RR3B-US0|||



- *Blade type not TUV tested or CE marked. 

Side flange model mounts directly to panel with no socket required. 

**Ordering Information** When ordering, specify the Part No. and coil voltage code: (example) **RR3B-U       AC120V** Part No.                         Coil Voltage Code 

## **Sockets** 

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Relays Standard DIN Rail Mount  Finger-safe DIN Rail Mount Through Panel Mount<br>ee RR2P SR2P-05 SR2P-05C SR2P-51<br>| SR2P-06 ||<br>RR3PA | SR3P-05 | SR3P-05C | SR3P-51<br>| SR3P-06 | |<br>RR1BA<br>RR2BA SR3B-05 — SR3B-51<br>RR3B<br>**----- End of picture text -----**<br>


All DIN rail mount sockets shown above can be mounted using DIN rail BNDN1000. 

**800-262-IDEC** (4332) • USA & Canada 

783 

**Relays & Sockets** 

**RR** 

~~’~~ 

## **Hold Down Springs & Clips** 

|Appearance|Appearance||Description<br>Pullover Wire<br>Spring|Relay<br>RR2P<br>RR3PA<br>RR1BA, RR2BA,<br>RR3B|For DIN<br>Mount Socket<br>SR2B-02F1<br>SR3B-02F1<br>SR3B-02F1|For Through Panel &<br>PCB Mount Socket<br>SR3P-01F1<br>SR3B-02F1|
|---|---|---|---|---|---|---|
||||||||
|Leaf Spring<br>(side latch)<br>RR2P, RR3PA<br>SFA-203<br>–<br>~~SDE~~|||||||



|**Accessories**<br>Item<br>Appearance<br>Aluminum<br>DIN Rail<br>(1 meter length)<br>DIN Rail End<br>Stop<br>Replacement<br>Hold-Down<br>Spring Anchor<br>~~fa~~<br>~~es~~|Use with<br>All DIN rail sockets<br>DIN rail<br>Horseshoe clip for sockets<br>SR3B-05, SR2P-06, SR3P-06<br>Chair clip for sockets<br>SR2P-05(C), SR3P-05(C)|Part No.<br>BNDN1000<br>BNL5<br>Y778-011<br>Y703-102|Remarks<br>The BNDN1000 is designed to accommodate DIN mount sockets.<br>Made of durable extruded aluminum, the BNDN1000 measures 0.413<br>(10.5mm) in height and 1.37 (35mm) in width (DIN standard). Standard<br>length is 39” (1,000mm).<br>9.1 mm wide.<br>For use on DIN rail mount socket when using pullover wire hold down<br>spring. 2 pieces included with each socket.|
|---|---|---|---|



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784 

**Relays  & Sockets** 

**RR** 

## **Specifications** 

|Contact Material<br>Contact Resistance1<br>Minimum Applicable Load<br>Operating Time<br>2<br>Release Time<br>2<br>Power Consumption (approx.)<br>Insulation Resistance<br>Dielectric<br>Strength<br>Pin Terminal<br>Blade Terminal<br>Operating Frequency<br>Vibration Resistance<br>Shock Resistance<br>Mechanical Life<br>Electrical Life<br>Operating Temperature3<br>Operating Humidity<br>Weight (approx.) (Standard type)|Silver<br>30 mΩ maximum<br>1V DC, 10 mA<br>25 ms maximum<br>25 ms maximum<br>AC: 3 VA (50 Hz), 2.5 VA (60 Hz)<br>DC: 1.5W<br>100 MΩ minimum (500V DC megger)<br>Between live and dead parts:<br>1500V AC, 1 minute<br>Between contact and coil:<br>1500V AC, 1 minute<br>Between contacts of different poles:<br>1500V AC, 1 minute<br>Between contacts of the same pole:<br>1000V AC, 1 minute<br>Between live and dead parts:<br>2000V AC, 1 minute<br>Between contact and coil:<br>2000V AC, 1 minute<br>Between contacts of different poles:<br>2000V AC, 1 minute<br>Between contacts of the same pole:<br>1000V AC, 1 minute<br>Electrical:<br>1800 operations/h maximum<br>Mechanical:<br>18,000 operations/h maximum<br>Damage limits:<br>10 to 55 Hz, amplitude 0.5 mm<br>Operating extremes:<br>10 to 55 Hz, amplitude 0.5 mm<br>Damage limits:<br>1000 m/s2(100g)<br>Operating extremes:<br>100 m/s2(10G)<br>10,000,000 operations<br>200,000 operations (220V AC, 5A)<br>–25 to +40°C (no freezing)<br>5 to 85% RH (no condensation)<br>RR2P: 90g, RR3PA: 96g, RR1BA/RR2BA/RR3B: 82g|
|---|---|



## **Coil Ratings** 

|Rated Voltage (V)<br>~~ir~~|Rated Voltage (V)<br>~~ir~~|Rated Current (mA) ±15% (at 20°C)|Rated Current (mA) ±15% (at 20°C)|Coil Resistance (Ω)<br>±10% (at 20°C)<br>~~ir~~|Operating Characteristics (values at 20°C)|Operating Characteristics (values at 20°C)|Operating Characteristics (values at 20°C)|
|---|---|---|---|---|---|---|---|
|||50 Hz<br>~~ir~~|60 Hz<br>~~ir~~||Maximum Continuous<br>Applied Voltage<br>~~ir~~<br>~~ff~~|Pickup Voltage<br>~~ir~~<br>~~ff~~|Dropout Voltage<br>~~ir~~<br>~~ff~~|
|AC<br>(50/60 Hz)<br>DC<br>~~ir~~|6<br>12<br>24<br>110<br>120<br>240<br>6<br>12<br>24<br>48<br>110<br>~~ir~~|490<br>420<br>245<br>210<br>121<br>105<br>27<br>23<br>24<br>20.5<br>12.1<br>10.5<br>240<br>120<br>60<br>30<br>13<br>~~ir~~||4.9<br>18<br>79<br>1,680<br>2,100<br>8,330<br>25<br>100<br>400<br>1,600<br>8,460<br>~~ir~~|110%<br>110%<br>~~ir~~<br>~~ff~~|80% maximum<br>80% maximum<br>~~ir~~<br>~~ff~~|30% minimum<br>10% minimum<br>~~ir~~<br>~~ff~~|



**800-262-IDEC** (4332) • USA & Canada 

785 

**Relays & Sockets** 

**RR** 

## **Contact Ratings** 

## **UL Ratings** 

|Switches & Pilot Lights<br>Signaling Lights|**Contact Ratingsgss**<br>Maximum Contact Capacity<br>Continuous<br>Current<br>Allowable Contact Power<br>Rated Load<br>Resistive<br>Load<br>Inductive<br>Load<br>Voltage (V)<br>Res. Load<br>Ind. Load<br>10A<br>1650VA AC<br>300W DC<br>1100VA AC<br>150W DC<br>110 AC<br>10A<br>7.5A<br>220 AC<br>7.5A<br>5A<br>30 DC<br>10A<br>5A<br>Note: Inductive load for the rated load — cos ø = 0.3, L/R = 7 ms<br>**TÜV Ratings**<br>Voltage<br>~~—E———EEE~~<br>|<br>|<br>|<br>|<br>|<br>~~ee ee~~<br>|<br>|<br>~~*~~|**UL Ratings**<br>Voltage<br>Resistive<br>General use<br>Horse Power Rating<br>240V AC<br>10A<br>7A<br>1/3 HP<br>120V AC<br>10A<br>7.5A<br>1/4 HP<br>30V DC<br>10A<br>7A<br>—<br>**CSA Ratings**<br>Voltage<br>Resistive<br>General use<br>240V AC<br>10A<br>7A<br>120V AC<br>10A<br>7.5A<br>100V DC<br>—<br>0.5A<br>30V DC<br>10A<br>7.5A<br>~~rn~~<br>~~ee~~<br>~~ee~~<br>|<br>|<br>|<br>|<br>|<br>|<br>~~—___—_§ —~~|
|---|---|---|



Voltage 240V AC 10A AC: cos ø = 1.0, DC: L/R = 0 ms 30V DC 10A A 

**Socket Specifications** Relays Terminal Electrical Rating Wire Size Torque SR2P-05 M3 screw with captive wire clamp 300V, 10A Maximum 2 - #12 AWG 9 - 11.5in•lbs SR2P-05C M3 screw with captive wire clamp, fingersafe 300V, 10A Maximum 2 - #12 AWG 9 - 11.5in•lbs ~~’ a~~ SR2P-06 ~~ee~~ | M3 screw with captive wire clamp | 300V, 10A | Maximum 2 - #12 AWG | 9 - 11.5in•lbs DIN Rail Sockets ~~|~~ SR3P-05 ~~|~~ M3 screw with captive wire clamp 300V, 10A Maximum 2 - #12 AWG 9 - 11.5in•lbs ~~|~~ SR3P-05C | M3 screw with captive wire clamp, fingersafe | 300V, 10A | Maximum 2 - #12 AWG | 9 - 11.5in•lbs | SR3P-06 | M3 screw with captive wire clamp 300V, 10A Maximum 2 - #12 AWG 9 - 11.5in•lbs | SR3B-05 | M3 screw with captive wire clamp | 300V, 15A (10A)* (*CSA rating) | Maximum 2 - #12 AWG | 9 - 11.5in•lbs SR2P-51 Solder 300V, 10A — — Through || Panel Mount SR3P-51 Solder 300V, 10A — — || | | | Sockets SR3B-51 Solder 300V, 10A — — 

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**Relays  & Sockets** 

**RR** 

## **Characteristics (Reference Data)** 

## **Electrical Life Curves** 

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AC Load<br>1000<br>500<br>100 mw<br>110V AC resistive<br>50<br>Se 220V AC resistive NNG<br>110V AC inductive<br>20<br>Bae 220V AC inductive<br>10 | fl<br>0.1 0.5 1 5 10<br>Load Current (A)<br>Life (¥ 10,000 operations)<br>**----- End of picture text -----**<br>


## **Maximum Switching Capacity** 

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10.0<br>AC<br>resistive<br>5.0<br>TA AC  S<br>inductive<br>DC resistive<br>1.0 Nal<br>DC inductive<br>0.5<br>1 5 10 30 50 100 200 300<br>Load Voltage (V)<br>Load Current (A)<br>**----- End of picture text -----**<br>


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DC Load<br>1000<br>500<br>30V DC<br>resistive<br>100 BIN<br>100V DC resistive<br>50<br>PERN IAN<br>100V DC inductive<br>20<br>—_TEAKE<br>30V DC inductive<br>10 eeeXN<br>0.01 0.05 0.1 0.5 1 5 10<br>Load Current (A)<br>Life (¥ 10,000 operations)<br>**----- End of picture text -----**<br>


## **Continuous Load Current vs. Operating Temperature Curve (Standard Type, With Check Button, and Side Flange Type)** 

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100<br>90<br>80<br>70<br>DC Coil<br>60<br>50<br>AC Coil<br>40<br>30<br>20<br>10<br>0<br>1 2 3 4 5 6 7 8 9 10<br>Load Current (A)<br>Operating Temperature (C)<br>**----- End of picture text -----**<br>


## **Internal Connection (View from Bottom) Standard Type** 

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RR2P-U RR3PA-U RR1BA-U RR2BA-U RR3B-U With Check Button<br>Front<br>Pushbutton<br>Contacts can be operated by pressing the<br>check button.<br>**----- End of picture text -----**<br>


## **With Indicator (-UL type)** 

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RR2P RR3PA RR1BA RR2BA RR3B<br>Coil<br>Below<br>100V  When the relay is energized,<br>AC/DC the indicator goes on.<br>• An LED protection diode is<br>not contained in relay coils<br>oS) Sr below 100V DC.<br>• Coils below 100V use<br>LED indicator while coils<br>above 100V use neon lamp<br>Coil<br>indicator.<br>100V<br>AC/DC<br>and over S OLAS ee - a - : : : :<br>ERS<br>_ [pra)”]<br>**----- End of picture text -----**<br>


**800-262-IDEC** (4332) • USA & Canada 

787 

**Relays & Sockets** 

**RR** 

## **RR2P-U/RR2P-UL** 

Total length from panel surface including relay socket SR2P-05: 84.5 (87.5) max., SR2P-511: 63 (68) max. —_——_ ——TkL OF 9.9 55.5 max. 13 **RR1BA-U/RR2BA-UL/RR2BA-U RR2BA-UL/RR3B-U/RR3B-UL** 

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4 5<br>3 6<br>2 7<br>1 8<br>9.9 28.6<br>55.5 max. 13 |__|<br>Dimensions in the (  )<br>include a hold-down spring.<br>35.6<br>**----- End of picture text -----**<br>


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3.0 ¥ ø2.0 oblong hole<br>4.7<br>**----- End of picture text -----**<br>


Total length from panel surface including relay socket SR3B-05: 73 (76) max., SR3B-51: 56 (60) max. ~~oO~~ 

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1 2 3<br>4 5 6<br>; 7 8 9<br>A B<br>m Y Ee<br>36<br>47.5 max. 7.3<br>Dimensions in the (  )<br>include a hold-down spring.<br>0.5<br>36<br>Timers<br>**----- End of picture text -----**<br>


## **Dimensions (mm)** 

## **RR3PA-U/RR3PA-UL** 

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Total length from panel surface including relay socket<br>SR3P-05: 84.5 (87.5) max., SR3P-511: 63 (68) max.<br>-—————<br>5 6 7<br>——Tk (Zan 4 8<br>3 9<br>2 10<br>1 11<br>FE) RY<br>9.9 35.6<br>55.5 max. 13 |__|<br>Dimensions in the (  )<br>include a hold-down spring.<br>35.6<br>**----- End of picture text -----**<br>


## **RR1BA-US/RR2BA-US/RR3B-US** 

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63.5<br>7.3 3.0 ¥ ø2.0 oblong hole<br>2-ø4.5 Mounting Holes<br>=<br>ay(2SD<br>63.5<br>47.5 max. 16.1<br>73.5<br>= 1 2 3<br>4 5 6<br>7 8 9<br>A B<br>[.__..| 36<br>11.1<br>16.0 4.2<br>11.1<br>4.7<br>0.5<br>36<br>**----- End of picture text -----**<br>


## **Standard DIN Rail Mount Sockets** 

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SR2P-05<br>**----- End of picture text -----**<br>


**SR2P-06** 

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36 DIN Rail  40<br>a " 8 M3.5 TerminalScrew 35 (BNDN) Terminal Arrangement fe 8 25.5 DIN Rail(BNDN) Terminal Arrangement<br>2-ø4.2 Mounting Holes(or M4 Tapped Holes) 65 43 M3.5 TerminalScrew 2-ø4.2 Mounting Holes(or M4 Tapped Holes) 6 5 4 3<br>29 7 2 33<br>4.4 max. 5 min. 8 1<br>ø4.2 hole 16.5 (Top View) ø4.2 hole 4.9 max. 5 min. 7 8 1 2<br>29 20 33 18 (Top View)<br>7.9 max.<br>28.5 22 7.9 max.<br>ø3.6 min.<br>ø3.6 min.<br>SR3P-05 SR3P-06<br>42 59<br>8 M3.5 TerminalScrew 35 DIN Rail(BNDN) Terminal Arrangement 8 M3.5 TerminalScrew 28.5 DIN Rail(BNDN) Terminal Arrangement<br>2-ø4.2 Mounting Hole(or M4 Tapped Holes) 78 6 45 2-ø4.2 Mounting Holes(or M4 Tapped Holes) 8 7 6 5 4<br>34 9 3 33<br>ee 34 ø4.2 hole 16.5 4.4 max. 5 min. oo 10(Top View)11 1 2 [aicloiaiaicl ø4.2 hole 4.9 max. 5 min. 600040) 9 10 11 1 2 3<br>20 33 18 (Top View)<br>7.9 max.<br>28.5 22 7.9 max.<br>ø3.6 min.<br>ø3.6 min.<br>52 33 ø25 60 ø25<br>Contactors<br>3<br>1<br>Terminal Blocks 52 33 ø27 60 ø27<br>3<br>1<br>**----- End of picture text -----**<br>


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788 

**Relays  & Sockets** 

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## **Standard DIN Rail Mount Sockets** 

## **SR3B-05** 

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36<br>8 M3.5 TerminalScrew 31.5 DIN Rail(BNDN) Terminal Arrangement 6 5 4<br>2-ø4.2 Mounting Holes 3 2 1<br>(or M4 Tapped Holes)<br>37<br>B A<br>4.4 max. 5.5 min. 9 8 7<br>(Top View)<br>7.9 max.<br>37 14.5 ø3.6 min.<br>43 25<br>4.2<br>76 56<br>2<br>**----- End of picture text -----**<br>


## **Finger-safe DIN Rail Mount Sockets** 

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SR2P-05C SR3P-05C<br>36 42<br>7 36.5 DIN Rail (BNDN) Terminal Arrangement 7 36.5 DIN Rail (BNDN)<br>a t 2-ø4.2 Mounting Holes(or M4 Tapped Holes) 5 4 _— Terminal Arrangement 7 6 5<br>6 3 2-ø4.2 Mounting Holes<br>(or M4 Tapped Holes) 8 4<br>29<br>ø4.2 hole 78 21 ø4.2 hole 34 9 3<br>(Top View) 10 11 1 2<br>Ring type crimping  (Top View)<br>21.5 terminals cannot be used.<br>29<br>30 34 21.5 Ring type crimping<br>30 terminals cannot be used.<br>Through Panel Mount Socket<br>SR2P-51 SR3P-51<br>4.2 2-ø3.5 Mounting Holes(or M3 Tapped Holes) 4.2 2-ø3.5 Mounting Holes(or M3 Tapped Holes)<br>Terminal Arrangement Terminal Arrangement<br>4 5 5 6 7<br>3 6 4 8<br>2 1 8 7 3 2 1 11 109<br>e il e @ Ol [ e i e o]<br>w 34 2.5 10 11 Se (Bottom View) OS Noy 34 2.5 10 11 (Bottom View) Re NG<br>2.5 2.5<br>SR3B-51<br>38 7.5 11 max. Terminal Arrangement 6.75 35.522 * 2-ø4.2 Mounting Holes(M4 Tapped Holes)<br>1 2 3<br>4 5 6<br>7 8 9<br>A B<br>S| 22 b 3 6.5 (Bottom View) at<br>iH imi (Tolerance 0.3)<br>3.5 *When two or more sockets are<br>ea 35 mounted side by side:L = 38 (N – 1) + 35.5 Ld<br>N: No. of sockets mounted<br>ø5 ø5<br>ø30 ø30<br>58<br>58<br>2.2<br>2.2<br>6 6<br>Panel Surfarface Panel Surfarface<br>50 38 ø29 38 50 38 ø29 38<br>51.5 35 43 0.3 32 11.5 min. 32.5 43<br>**----- End of picture text -----**<br>


## **Through Panel Mount Socket** 

**800-262-IDEC** (4332) • USA & Canada 

789 

**Relays  & Sockets** 

**Operating Instructions** 

## **Operating Instructions** 

## **Driving Circuit for Relays** 

## **Protection for Relay Contacts** 

1. To ensure correct relay operation, apply rated voltage to the relay coil. 

1. The contact ratings show maximum values. Make sure that these values are not exceeded. When an inrush current flows through the load, the contact may become welded. If this is the case, connect a contact protection circuit, such as a current limiting resistor. 

## 2. Input voltage for the DC coil: 

A complete DC voltage is best for the coil power to make sure of stable relay operation. When using a power supply containing a ripple voltage, suppress the ripple factor within 5%. When power is supplied through a rectification circuit, the relay operating characteristics, such as pickup voltage and dropout voltage, depend on the ripple factor. Connect a smoothing capacitor for better operating characteristics as shown below. 

2. Contact protection circuit: 

When switching an inductive load, arcing causes carbides to form on the contacts, resulting in increased contact resistance. In consideration of contact reliability, contact life, and noise suppression, use of a surge absorbing circuit is recommended. Note that the release time of the load becomes slightly longer. Check the operation using the actual load. Incorrect use of a contact protection circuit will adversely affect switching characteristics. Four typical examples of contact protection circuits are shown in the following table: examples of contact protection circuits are shown in the following table: 

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Pulsation<br>longer. Check the operation using the actual load. Incorrect use of a contact<br>SmoothingCapacitor Emin Emax Emean DC protection circuit will adversely affect switching characteristics. Four typical examples of contact protection circuits are shown in the following table:<br>+<br>– R Relay Ripple Factor (%) Emax –EmeanEmin ¥ 100% This protection circuit can be used when the load<br>Emax = Maximum of pulsating current impedance is smaller than the RC impedance in an<br>EminEmean = DC mean value= Minimum of pulsating current Power C R Ind. Load AC load power circuit.• R: Resistor of approximately the same resistance<br>3. Leakage current while relay is off:  value as the load<br>When driving an element at the same time as the relay operation, special  • C:0.1 to 1 µF<br>consideration is needed for the circuit design. As shown in the incorrect  This protection circuit can be used for both AC and<br>circuit below, leakage current (Io) flows through the relay coil while the relay  DC load power circuits.<br>is off. Leakage current causes coil release failure or adversely affects the  R: Resistor of approximately the same resistance<br>value as the load<br>vibration resistance and shock resistance. Design a circuit as shown in the<br>fro, Foo I C: 0.1 to 1 µF<br>correct example.<br>This protection circuit can be used for DC load power<br> Incorrect  Correct  + circuits. Use a diode with the following ratings.<br>R TE R Power D Ind. Load Reverse withstand voltage: Power voltage of the<br>– load circuit x 10<br>Io Forward current: More than the load current<br>=a =ee (CE<br>This protection circuit can be used for both AC and<br>DC load power circuits.<br>4. Surge suppression for transistor driving circuits:<br>For a best result, when using a power voltage of 24<br>When the relay coil is turned off, a high-voltage pulse is generated, causing a  Power Ind. Load<br>to 48V AC/DC, connect a varistor across the load.<br>transistor to deteriorate and sometimes to break. Be sure to connect a diode<br>tt When using a power voltage of 100 to 240V AC/DC,<br>to suppress the back electromotive force. Then, the coil release time becomes  connect a varistor across the contacts.<br>slightly longer. To shorten the coil release time, connect a Zener diode<br>between the collector and emitter of the transistor. Select a Zener diode with  3. Do not use a contact protection circuit as shown below:<br>a Zener voltage slightly higher than the power voltage.<br>This protection circuit is very effective in arc suppression when<br>Back emf<br>suppressing diode opening the contacts. But, the capacitor is charged while the<br>+– R Relay PowerC Load contacts are opened. When the contacts are closed, the capacitor is discharged through the contacts, increasing the possibility of contact welding.<br>This protection circuit is very effective in arc suppression when<br>C Load opening the contacts. But, when the contacts are closed, a current<br>B S 8 Power flows to charge the capacitor, causing contact welding.<br>RC<br>Diode<br>Varistor<br>Varistor<br>**----- End of picture text -----**<br>


Generally, switching a DC inductive load is more difficult than switching a DC resistive load. Using an appropriate arc suppressor, however, will improve the switching characteristics of a DC inductive load. 

## **Soldering** 

1. When soldering the relay terminals, use a soldering iron of 30 to 60W, and quickly complete soldering (within approximately 3 seconds). 

2. Use a non-corrosive rosin flux. 

**800-262-IDEC** (4332) • USA & Canada 

817 

**Relays & Sockets** 

**Operating Instructions** 

## **Operating Instructions con’t** 

## **Other Precautions** 

   2. UL and CSA ratings may differ from product rated values determined by IDEC. 

1. General notice: 

- To maintain the initial characteristics, do not drop or shock the relay. 

   3. Do not use relays in the vicinity of strong magnetic field, as this may affect relay operation. 

- The relay cover cannot be removed from the base during normal operation. To maintain the initial characteristics, do not remove the relay cover. 

Use the relay in environments free from condensation, dust, sulfur dioxide (SO2), and hydrogen sulfide (H2S). 

Make sure that the coil voltage does not exceed applicable coil voltage range. 

## **Safety Precautions** 

- Turn off the power to the relay before starting installation, removal, wiring, maintenance, and inspection of the relays. Failure to turn power off may cause electrical shock or fire hazard. 

- Observe specifications and rated values, otherwise electrical shock or fire hazard may be caused. 

- Use wires of the proper size to meet voltage and current requirements. Tighten the terminal screws on the relay socket to the proper tightening torque. 

- Surge absorbing elements on AC relays with RC or DC relays with diode are provided to absorb the back electromotive force generated by the coil. When the relay is subject to an excessive external surge voltage, the surge absorbing element may be damaged. Add another surge absorbing provision to the relay to prevent damage. 

## **Precautions for the RU Relays** 

- Before operating the latching lever of the RU relay, turn off the power to the RU relay. After checking the circuit, return the latching lever to the original position. 

- Do not use the latching lever as a switch. The durability of the latching lever is a minimum of 100 operations. 

- When using DC loads on 4PDT relays, apply a positive voltage to terminals of neighboring poles and a negative voltage to the other terminals of neighboring poles to prevent the possibility of short circuits. 

- DC relays with a diode have a polarity in the coil terminals. Apply the DC voltage to the correct terminals. 

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