RH2V2-UAC24V

## **RH Series Power Relays** 

## **SPDT through 4PDT, 10A contacts Midget power relays** 

The RH series are miniature power relays with a large capac­ ity. The RH relays feature 10A contact capacity as large as the RR series and the same size as IDEC’s miniature relays. The compact size saves space. 

• Cadmium free contact relays available. 

• Lloyd Register type approved. • UL, CSA certified. EN compliant. 

• See website for details on approvals and standards. & WG ~~D~~ CE ry e[1] SPDT DPDT Termination Style Part No. Coil Voltage Code ∗ Part No. Coil Voltage Code ∗ ~~Oe res ee ee~~ AC6, AC12, AC24, AC50, AC100, AC6, AC12, AC24, AC50, DC6, DC12, DC24, DC48 AC100­110, AC200­220, DC6, Basic **RH1B-URH1B-UW** ∗ ∗ ~~po~~ DC100, DC110 **RH2B-URH2B-UW** ∗ ∗ DC12, DC24, DC48, DC100­110 AC110, AC115, AC120 AC110­120 ~~Po~~ AC200, AC220, AC230, AC240 ~~Po~~ AC220­240 ~~po po~~ AC6, AC12, AC24, AC50, AC100, AC6, AC12, AC24, AC50, DC6, DC12, DC24, DC48 AC100­110, AC200­220, DC6, With Indicator **RH1B-ULRH1B-ULW** ∗ ∗ ~~Po~~ DC100, DC110 **RH2B-ULRH2B-ULW** ∗ ∗ DC12, DC24, DC48, DC100­110 AC110, AC115, AC120 AC110­120 Plug­in ~~po~~ AC200, AC220, AC230, AC240 ~~po~~ AC220­240 Terminal ~~Po po~~ AC6, AC12, AC24, AC50, AC100, AC6, AC12, AC24, AC50, DC6, DC12, DC24, DC48 AC100­110, AC200­220, DC6, Top Bracket **RH1B-UT** ∗ DC100, DC110 **RH2B-UT** ∗ DC12, DC24, DC48, DC100­110 Mounting **RH1B-UTW** ∗ ~~po~~ **RH2B-UTW** ∗ AC110, AC115, AC120 AC110­120 ~~Po~~ AC200, AC220, AC230, AC240 ~~po~~ AC220­240 ~~Po po~~ With Diode **RH1B-UD** ∗ ~~po~~ DC6, DC12, DC24, DC48 **RH2B-UD** ∗ DC6, DC12, DC24, DC48, (DC coil only) **RH1B-UDW** ∗ DC100 **RH2B-UDW** ∗ DC100­110 With Indicator and **RH1B-ULD** ∗ DC6, DC12, DC24, DC48 **RH2B-ULD** ∗ DC6, DC12, DC24, DC48, Diode ~~aaee~~ (DC coil only) **RH1B-ULDW** ∗ DC100, DC110 **RH2B-ULDW** ∗ DC100­110 AC6, AC12, AC24, AC50, AC100, AC6, AC12, AC24, AC50, ~~eee~~ DC6, DC12, DC24, DC48 AC100­110, AC200­220, DC6, Basic **RH1V2-URH1V2-UW** ∗ ∗ ~~Po~~ DC100, DC110 **RH2V2-URH2V2-UW** ∗ ∗ DC12, DC24, DC48, DC100­110 PC Board AC110, AC115, AC120 AC110­120 Terminal ~~po~~ AC200, AC220, AC230, AC240 ~~po~~ AC220­240 ~~po po~~ With Diode **RH1V2-UD** ∗ ~~po~~ DC6, DC12, DC24, DC48 **RH2V2-UD** ∗ DC6, DC12, DC24, DC48, (DC coil only) **RH1V2-UDW** ∗ DC100 **RH2V2-UDW** ∗ DC100­110 ~~eS~~ • Part number ending with W is cadmium free. **Part No. Development** When ordering, specify the Part No. and coil voltage code. (Example) **RH2B-U AC100-110** Part No. Coil Voltage Code ~~ee~~ 

1 

## **RH Series Power Relays** 

**==> picture [496 x 37] intentionally omitted <==**

**----- Start of picture text -----**<br>
3PDT 4PDT<br>Termination Style<br>Part No. Coil Voltage Code  ∗ Part No. Coil Voltage Code  ∗<br>AC6, AC12, AC24, AC50,  AC6, AC12, AC24, AC50,<br>**----- End of picture text -----**<br>


|Termination|Style|3PDT|3PDT|3PDT|4PDT|4PDT|
|---|---|---|---|---|---|---|
|||Part No.|Coil Voltage Code∗||Part No.|Coil Voltage Code∗|
||||AC6, AC12, AC24, AC50,|||AC6, AC12, AC24, AC50,|
|Plug­in<br>Terminal|Basic|**RH3B-U**∗<br>**RH3B-UW**∗|AC100, AC200, DC6, DC12,<br>DC24,DC48,DC100||**RH4B-U**∗<br>**RH4B-UW**∗|AC100, AC200, DC6, DC12,<br>DC24,DC48,DC100|
||||AC110,AC115,AC120|||AC110,AC115,AC120|
||||AC220,AC230,AC240,DC110|||AC220,AC230,AC240,DC110|
||With Indicator|**RH3B-UL**∗<br>**RH3B-ULW**∗|AC6, AC12, AC24, AC50,<br>AC100,<br>AC200||**RH4B-UL**∗<br>**RH4B-ULW**∗|AC6, AC12, AC24, AC50,<br>AC100, AC200, DC6, DC12,<br>DC24,DC48,DC100|
||||AC110, AC115, AC120, DC6,<br>DC12,DC24,DC48,DC100|||AC110, AC115, AC120|
||||AC220,AC230,AC240,DC110|||AC220,AC230,AC240,DC110|
||Top Bracket<br>Mounting|**RH3B-UT**∗<br>**RH3B-UTW**∗|AC6, AC12, AC24, AC50,<br>AC100, AC110, AC115,<br>AC120, AC200, AC220,<br>AC230, AC240, DC6, DC12,<br>DC24, DC48, DC100, DC110||**RH4B-UT**∗<br>**RH4B-UTW**∗|AC6, AC12, AC24, AC50,<br>AC100, AC200, DC6, DC12,<br>DC24,DC48,DC100|
|||||||AC110,AC115,AC120|
|||||||AC220,AC230,AC240,DC110|
||With Diode<br>(DC coil only)|**RH3B-D**∗(Note)<br>**RH3B-DW**∗(Note)|DC6, DC12, DC24, DC48,<br>DC100, DC110||**RH4B-UD**∗<br>**RH4B-UDW**∗|DC6, DC12, DC24, DC48,<br>DC100, DC110|
||With Indicator and<br>Diode<br>(DC coil only)|**RH3B-LD**∗(Note)<br>**RH3B-LDW**∗(Note)|DC6, DC12, DC24, DC48,<br>DC100, DC110||**RH4B-ULD**∗<br>**RH4B-ULDW**∗|DC6, DC12, DC24, DC48,<br>DC100, DC110|
|PC Board<br>Terminal|Basic|**RH3V2-U**∗<br>**RH3V2-UW**∗|AC6, AC12, AC24, AC50,<br>AC100, AC200, DC6, DC12,<br>DC24,DC48,DC100||**RH4V2-U**∗<br>**RH4V2-UW**∗|AC6, AC12, AC24, AC50,<br>AC100, AC200, DC6, DC12,<br>DC24,DC48,DC100|
||||AC110,AC115,AC120|||AC110,AC115,AC120|
||||AC220,AC230,AC240,DC110|||AC220,AC230,AC240,DC110|
||With Indicator|**RH3V2-UL**∗<br>**RH3V2-ULW**∗|AC6, AC12, AC24, AC50,<br>AC100, AC200||**RH4V2-UL**∗<br>**RH4V2-ULW**∗|AC6, AC12, AC24, AC50,<br>AC100, AC200, DC6, DC12,<br>DC24,DC48,DC100|
||||AC110, AC115, AC120, DC6,<br>DC12,DC24,DC48,DC100|||AC110, AC115, AC120|
||||AC220,AC230,AC240,DC110|||AC220,AC230,AC240,DC110|
||With Diode<br>(DC coil only)|**RH3V2-D**∗(Note)<br>**RH3V2-DW**∗(Note)|DC6, DC12, DC24, DC48,<br>DC100, DC110||**RH4V2-UD**∗<br>**RH4V2-UDW**∗|DC6, DC12, DC24, DC48,<br>DC100, DC110|
||With Indicator and<br>Diode (DC coil only)|**RH3V2-LD**∗(Note)<br>**RH3V2-LDW**∗(Note)|DC6, DC12, DC24, DC48,<br>DC100, DC110||**RH4V2-ULD**∗<br>**RH4V2-ULDW**∗|DC6, DC12, DC24, DC48,<br>DC100, DC110|
|Note: No standard approval.<br>• Part number ending with W is cadmium free.||||**Part No. Development**<br>When ordering, specify the Part No. and coil voltage code.<br>(Example) **RH4B-U**<br>Part No.<br>**AC100**<br>Coil Voltage Code|||



Note: No standard approval. • Part number ending with W is cadmium free. 

**Part No. Development** When ordering, specify the Part No. and coil voltage code. (Example) **RH4B-U AC100** Part No. Coil Voltage Code 

## **Relay coil tape color** 

The color of the tape wrapped around the coil is determined by the rated coil voltage. (The voltage is indicated on the yellow tape.) 

|Coil Voltage|Tape Color|
|---|---|
|DC24V|Green|
|AC100­110V,AC110V|Clear|
|AC110­120V,AC120V|Blue|
|AC200­220V,AC220V|Black|
|AC220­240V,AC240V|Red|
|AC24V|White|
|Other voltages|Yellow|



2 

**RH Series Power Relays** 

## **Coil Ratings** 

**==> picture [495 x 48] intentionally omitted <==**

**----- Start of picture text -----**<br>
Operation Characteristics<br>Rated Voltage (V) Rated Current (mA) ±15% at 20°C Coil Resistance (Ω)   (against rated values at 20°C)<br>±10% at 20°C<br>SPDT DPDT 3PDT 4PDT 50Hz 60Hz Continuous  Max.   Pickup Min.   Dropout<br>SPDT DPDT 3PDT 4PDT SPDT DPDT 3PDT 4PDT SPDT DPDT 3PDT 4PDT Applied Voltage Voltage Voltage<br>6 6 6 6 170 240 330 387 150 200 280 330 18.8  9.34  6.4 5.8<br>**----- End of picture text -----**<br>


|Rated Voltage (V)|Rated Voltage (V)|Rated Voltage (V)|Rated Voltage (V)|Rated Voltage (V)|Rated Current (mA) ±15% at 20°C|Rated Current (mA) ±15% at 20°C|Rated Current (mA) ±15% at 20°C|Rated Current (mA) ±15% at 20°C|Rated Current (mA) ±15% at 20°C|Rated Current (mA) ±15% at 20°C|Rated Current (mA) ±15% at 20°C|Rated Current (mA) ±15% at 20°C|Coil Resistance (Ω)<br>±10% at 20°C|Coil Resistance (Ω)<br>±10% at 20°C|Coil Resistance (Ω)<br>±10% at 20°C|Coil Resistance (Ω)<br>±10% at 20°C|Operation Characteristics<br>(against rated values at 20°C)|Operation Characteristics<br>(against rated values at 20°C)|Operation Characteristics<br>(against rated values at 20°C)|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||SPDT|DPDT|3PDT|4PDT|50Hz||||60Hz||||||||Max.<br>Continuous<br>Applied Voltage|Min.<br>Pickup<br>Voltage|Dropout<br>Voltage|
||||||SPDT|DPDT|3PDT|4PDT|SPDT|DPDT|3PDT|4PDT|SPDT|DPDT|3PDT|4PDT||||
||6|6|6|6|170|240|330|387|150|200|280|330|18.8|9.34|6.4|5.8||||
|AC (50/60Hz)|12|12|12|12|86|121|165|196|75|100|140|165|76.8|39.3|25.3|23.1|110%|80%<br>maximum|30%<br>minimum|
||24|24|24|24|42|60.5|81|98|37|50|70|83|300|152|103|84.5||||
||50|50|50|50|20.5|28.9|39.5|47|18|24|34|40|1,280|676|460|340||||
||<br>100|100­110|100|100|10.5|10.3­11.8|20|23.5|9|9.1­10.0|17|20|5,220|3,360|1,940|1,560||||
||<br>110|—|110|110|9.6|—|18.1|21.6|8.4|—|15.5|18.2|6,950|—|2,200|1,800||||
||<br>115|110­120|115|115|8.9|9.4­10.8|17.1|20.8|7.8|8.0­9.2|14.8|17.5|7,210|4,290|2,620|1,910||||
||<br>120|—|120|120|8.6|—|16.4|19.5|7.5|—|14.2|16.5|8,100|—|2,770|2,220||||
||200|200­220|200|200|5.6|5.1­5.9|9.8|11.8|4.9|4.3­5.0|8.5|10|21,442|13,690|8,140|6,360||||
||220|—|220|220|4.7|—|8.8|10.7|4.1|—|7.7|9.1|25,892|—|10,810|7,360||||
||230|220­240|230|230|4.7|4.7­5.4|8.5|10.3|4.1|4.0­4.6|7.4|8.7|26,710|18,820|11,460|8,520||||
||240|—|240|240|4.9|—|8.2|9.8|4.3|—|7.1|8.3|26,710|—|12,110|9,120||||
|DC|SPDT|DPDT|3PDT|4PDT|SPDT||DPDT||3PDT||4PDT||SPDT|DPDT|3PDT|4PDT|110%|80%<br>maximum|10%<br>minimum|
||6|6|6|6|128||150||240||250||47|40|25|24||||
||12|12|12|12|64||75||120||125||188|160|100|96||||
||24|24|24|24|32||37.5||60||62||750|640|400|388||||
||48|48|48|48|18||18.8||30||31||2,660|2,560|1,600|1,550||||
||100|100­110|100|100|10||8.2­9.0||14.5||15||10,000|12,250|6,900|6,670||||
||110|—|110|110|8||—||12.8||15||13,800|—|8,600|7,340||||



## **Contact Ratings** 

|||Maximum Contact Capacity|Maximum Contact Capacity|Maximum Contact Capacity|Maximum Contact Capacity|Maximum Contact Capacity|
|---|---|---|---|---|---|---|
||Continuous|Allowable Contact Power||Rated Load|||
|Contact|Current|Resistive<br>Load|Inductive<br>Load|Voltage<br>(V)|Res.<br>Load|Ind.<br>Load|
|SPDT|10A|1540VA AC<br>300W DC|990VA AC<br>210W DC|110 AC|10A|7A|
|||||220 AC|7A|4.5A|
|||||30 DC|10A|7A|
|DPDT<br>3PDT<br>4PDT|10A|1650VA AC<br>300W DC|1100VA AC<br>225W DC|<br>110 AC|10A|7.5A|
|||||<br>220 AC|7.5A|5A|
|||||30 DC|10A|7.5A|



Note: Inductive load for the rated load — cos ø = 0.3, L/R = 7 ms 

## **Approval Ratings** 

## **UL Ratings (silver cadmium oxide)** 

||Resistive|Resistive|Resistive|General use|General use|General use|Horse Power Rating|Horse Power Rating|Horse Power Rating|
|---|---|---|---|---|---|---|---|---|---|
|Voltage|RH1<br>RH2|RH3|RH4|RH1<br>RH2|RH3|RH4|RH1<br>RH2|RH3|RH4|
|240V AC|10A|7.5A|7.5A|7A|6.5A|5A|1/3 HP|1/3 HP|—|
|120V AC|—|10A|10A|—|7.5A|7.5A|1/6 HP|1/6 HP|—|
|30V DC|10A|10A|—|7A|—|—|—|—|—|
|28V DC|—|—|10A|—|—|—|—|—|—|



## **UL Ratings (cadmium free)** 

||Resistive|Resistive|Resistive|General use|General use|General use|Horse Power Rating|Horse Power Rating|Horse Power Rating|
|---|---|---|---|---|---|---|---|---|---|
|Voltage|RH1<br>RH2|RH3|RH4|RH1<br>RH2|RH3|RH4|RH1<br>RH2|RH3|RH4|
|240V AC|10A|10A|10A|10A|10A|10A|1/3 HP|1/3 HP|—|
|120V AC|—|—|—|—|—|—|1/6 HP|1/6 HP|—|
|30V DC|10A|10A|10A|7A|—|—|—|—|—|



## **CSA Ratings (Silver cadmium oxide/cadmium free)** 

**==> picture [222 x 125] intentionally omitted <==**

**----- Start of picture text -----**<br>
Horse<br>Resistive General use Power<br>Voltage Rating<br>RH<br>RH1 RH2 RH3 RH4 RH1 RH2 RH3 RH4<br>1, 2, 3<br>240V AC 10A 10A 10A 10A 7A 7A 7A 5A 1/3 HP<br>120V AC 10A 10A 10A 10A 7.5A 7.5A — 7.5A 1/6 HP<br>30V DC 10A 10A 10A 10A 7A 7.5A — — —<br>TÜV Ratings (silver cadmium oxide/cadmium free)<br>Voltage RH1 RH2 RH3 RH4<br>240V AC 10A 10A 7.5A 7.5A<br>30V DC 10A 10A 10A 10A<br>**----- End of picture text -----**<br>


AC: cos ø = 1.0, DC: L/R = 0 ms 

## **Specifications** 

|**Specifications**|**Specifications**||
|---|---|---|
|Contact Material||Silver cadmium oxide/cadmium free(Ag­alloy)|
|Contact Resistance∗1||50 mΩ maximum|
|Minimum Applicable Load||24V DC, 30 mA; 5V DC, 100 mA(reference value)|
|Operate Time<br>∗2|SPDT/DPDT|20 ms maximum|
||3PDT/4PDT|25 ms maximum|
|Release Time<br>∗2|SPDT/DPDT|20 ms maximum|
||3PDT/4PDT|25 ms maximum|
|Power<br>Consumption<br>(approx.)|SPDT|AC: 1.1 VA(50 Hz), 1 VA(60 Hz), DC: 0.8W|
||DPDT|AC: 1.4 VA(50 Hz), 1.2 VA(60 Hz), DC: 0.9W|
||3PDT|AC: 2 VA(50 Hz), 1.7 VA(60 Hz), DC: 1.5W|
||4PDT|AC: 2.5 VA(50 Hz), 2 VA(60 Hz), DC: 1.5W|
|Insulation Resistance||100 MΩ minimum(500V DC megger)|
|Dielectric<br>Strength|SPDT|Between live and dead parts:  2000V AC, 1 minute∗3<br>Between contact and coil:<br>2000V AC, 1 minute<br>Between contacts of the samepole: 1000V AC,1 minute|
||DPDT/3PDT/<br>4PDT|Between live and dead parts:  2000V AC, 1 minute<br>Between contact and coil:<br>2000V AC, 1 minute<br>Between contacts of different poles: 2000V AC, 1 minute<br>Between contacts of the samepole: 1000V AC,1 minute|
|Operating Frequency||Electrical:<br>1,800 operations/h maximum<br>Mechanical: 18,000 operations/h maximum|
|Vibration Resistance||Damage limits:<br>10 to 55 Hz, amplitude 0.5 mm<br>Operatingextremes: 10 to 55 Hz,amplitude 0.5 mm|
|Shock Resistance||Damage limits:<br>1,000 m/s2<br>Operating extremes: 200 m/s2(SPDT, DPDT)<br>100 m/s2(3PDT4PDT)|
|Mechanical Life||, <br>50,000,000 operations minimum|
|Electrical Life|DPDT|Silver cadmium oxide contact: 500,000 operations<br>minimum (110V AC, 10A)<br>Cadmium free (Ag­alloy) contact: 300,000 operations<br>minimum|
||SPDT/3PDT/<br>4PDT|200,000 operations minimum (110V AC, 10A)|
|Operating<br>Temperature<br>∗4|SPDT|–25 to +50°C(no freezing)|
||DPDT/3PDT/<br>4PDT|–25 to +40°C (no freezing)|
|OperatingHumidity||45 to 85% RH(no condensation)|
|Storage Temperature||–55 to +70°C(no freezing)|
|Storage Humidity||45 to 85% RH(no condensation)|
|Weight(approx.)||SPDT: 24g, DPDT: 37g, 3PDT: 50g, 4PDT: 74g|



Note: Above values are initial values. 

- ∗ 1: Measured using 5V DC, 1A voltage drop method 

- ∗ 2: Measured at the rated voltage (at 20°C), excluding contact bouncing Release time of relays with diode: 40 ms maximum 

- ∗ 3: Relays with indicator or diode: 1000V AC, 1 minute 

- ∗ 4: For use under different temperature conditions, refer to Continuous Load Current vs. Operating Temperature Curve. The operating temperature range of relays with indicator or diode is –25 to +40°C. 

3 

**RH Series Power Relays** 

## **Characteristics (Reference Data)** 

## **Electrical Life Curve** 

**==> picture [464 x 489] intentionally omitted <==**

**----- Start of picture text -----**<br>
DC Load<br>1000 1000<br>(RH1) 110V AC resistive (RH1)<br>500 500<br>30V DC resistive<br>100 100<br>50 50<br>100V DC resistive<br>30V DC inductive<br>20 20<br>220V AC inductive 110V AC inductive 220V AC resistive 100V DC inductive<br>10 1 2 3 4 5 6 7 8 9 10 10 1 2 3 4 5 6 7 8 9 10<br>Load Current (A) Load Current (A)<br>(RH2) 1000 110V AC resistive (silver cadmium oxide) (RH2) 1000<br>30V DC resistive<br>500 500<br>110V AC inductive (silver cadmium oxide)<br>220V AC resistive (silver cadmium oxide)<br>100 100<br>50 50 100V DC resistive 30V DCinductive<br>220V AC inductive<br>(silver cadmium oxide) 100V DC inductive<br>20 110V AC resistive 20<br>(cadmium free)<br>10 1 2 3 4 5 6 7 8 9 10 10 1 2 3 4 5 6 7 8 9 10<br>Load Current (A) Load Current (A)<br>(RH3/RH4) 1000 (RH3/RH4) 1000<br>110V AC resistive<br>500 500 30V DC resistive<br>30V DC inductive<br>100 100<br>50 50<br>20 220V AC inductive 20 100V DC resistive<br>220V AC resistive 100V DC inductive<br>110V AC inductive<br>10 1 2 3 4 5 6 7 8 9 10 10 1 2 3 4 5 6 7 8 9 10<br>Load Current (A) Load Current (A)<br>Life (× 10,000 operations) Life (× 10,000 operations)<br>Life (× 10,000 operations) Life (× 10,000 operations)<br>Life (X 10,000 operations) Life (× 10,000 operations)<br>**----- End of picture text -----**<br>


**==> picture [34 x 8] intentionally omitted <==**

**----- Start of picture text -----**<br>
AC Load<br>**----- End of picture text -----**<br>


## **Maximum Switching Capacity** 

## **(RH1)** 

**==> picture [207 x 168] intentionally omitted <==**

**----- Start of picture text -----**<br>
10.0<br>AC resistive<br>5.0 AC inductive<br>DC resistive<br>1.0<br>0.5 DC inductive<br>0.1<br>1 5 10 50 100 200 300<br>Load Voltage (V)<br>Load Current (A)<br>**----- End of picture text -----**<br>


**==> picture [213 x 178] intentionally omitted <==**

**----- Start of picture text -----**<br>
(RH2/RH3/RH4)<br>10.0<br>AC resistive<br>5.0 AC inductive<br>DC resistive<br>1.0<br>DC inductive<br>0.5<br>0.1<br>1 5 10 50 100 200 300<br>Load Voltage (V)<br>Load Current (A)<br>**----- End of picture text -----**<br>


4 

**RH Series Power Relays** 

## **Internal Connection (Bottom View)** 

## **Basic** 

**==> picture [497 x 276] intentionally omitted <==**

**----- Start of picture text -----**<br>
SPDT DPDT 3PDT 4PDT<br>1 1 4 1 2 4 1 2 3 4<br>5 5 8 5 6 8 5 6 7 8<br>9 9 12 9 10 12 9 10 11 12<br>13(  –  ) 14(  +  ) 13(  –  ) (  +  )14 13(  –  ) (  +  )14 13(  –  ) (  +  )14<br>With Indicator (-L)<br>SPDT DPDT 3PDT 4PDT<br>When the coil is<br>1 1 4 1 2 4 1 2 3 4 ener gized, the<br>5 5 8 5 6 8 5 6 7 8 indicator goes on.<br>Below   9 9 12 24V   9 10 12 9 10 11 12<br>AC/DC24V   13 (  –  ) (  +  )14 13(  –  ) (  +  )14 AC/DC or less 13 (  –  ) (  +  )14 13 (  –  ) (  +  )14<br>1 1 4 1 2 4 1 2 3 4<br>24V   5 5 8 Over   5 6 8 5 6 7 8<br>AC/DC   9 9 12 24V   9 10 12 9 10 11 12<br>and over AC/DC<br>13 (  –  ) (  +  )14 13(  –  ) (  +  )14 13 (  –  ) (  +  )14 13 (  –  ) (  +  )14<br>**----- End of picture text -----**<br>


## **With Diode (-D)** 

**==> picture [495 x 311] intentionally omitted <==**

**----- Start of picture text -----**<br>
SPDT DPDT 3PDT 4PDT This type contains a diode<br>to absorb the counter emf<br>generated when the coil is<br>deenergized. The release time is<br>1 1 4 1 2 4 1 2 3 4 slightly longer. Available for DC<br>5 5 8 5 6 8 5 6 7 8 coil only.<br>9 9 12 9 10 12 9 10 11 12 • Diode Characteristics<br>(  –  )13 14(  +  ) 13(  –  ) (  +  )14 13(  –  ) (  +  )14 13(  –  ) (  +  )14 Reverse withstand voltage: 1,000V<br>Forward current: 1A<br>With Indicator and Diode (-LD)<br>SPDT DPDT 3PDT 4PDT This type contains an<br>operation indicator and<br>a sure absorber, and<br>1 1 4 1 2 4 1 2 3 4 has the same height as<br>5 5 8 5 6 8 5 6 7 8 the basic type.<br>Below   9 9 12 24V DC  9 10 12 9 10 11 12<br>24V DC 13 (– ) (+)14 13(  –  ) (  +  )14 or less 13 (  –  ) (  +  ) 14 13 (  –  ) (  +  ) 14<br>1 1 4 1 2 4 1 2 3 4<br>5 5 8 5 6 8 5 6 7 8<br>24V DC   9 9 12 Over  9 10 12 9 10 11 12<br>and over 13(  –  ) (  +  )14 24V DC 13 (  –  ) (  +  ) 14<br>13 (  –  ) (  +  )14<br>13 (–) (+)14<br>**----- End of picture text -----**<br>


5 

**RH Series Power Relays** 

## **Characteristics (Reference Data)** 

## **Continuous Load Current vs. Operating Temperature Curve (Basic and Top Bracket Mounting)** 

**==> picture [492 x 688] intentionally omitted <==**

**----- Start of picture text -----**<br>
(RH1) Note: The rated voltage is  (RH2) Note: The rated voltage is  (RH3/RH4) Note: The rated voltage is<br>100 applied to the coil. 100 applied to the coil. 100 applied to the coil.<br>90 90 90<br>80 80 80<br>DC Coil<br>70 70 DC Coil 70<br>60 60 60<br>50 AC Coil 50 50 AC/DC Coil<br>40 40 AC Coil 40<br>30 30 30<br>20 20 20<br>10 10 10<br>0 cs 1 2 3 4 5 6 7 8 9 10 0 PSB 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10<br>Load Current (A) Load Current (A) Load Current (A)<br>Dimensions<br>SPDT Plug-in Terminal Total length from panel surface including relay socket<br>RH1B-U/RH1B-UL/RH1B-UD/ULD SH1B-05B: 61.5 (63.5) max., SH1B-51: 39.6 (41.6) max. Applicable Socket and Hold-down Spring<br>Dimensions in the (  ) Socket Hold­down<br>include a hold-down spring.<br>Mounting Style Part No. Spring<br>DIN Rail Mount  SFA­101<br>ø2.6 hole Socket SH1B-05 ∗ SFA­202<br>Panel Mount<br>(Photo: RH1B­U) 1315914 SocketPC Board Mount Socket SH1B-51SH1B-62 SY4S­51F1SFA­301SFA­302<br>Z 35.6 max. 6.4 a 14<br>DPDT Plug-in Terminal<br>RH2B-U/RH2B-UL/RH2B-UD/RH2B-ULD Note: For SH2B­5D, use SFA­502 hold­down spring. Applicable Socket and Hold-down Spring<br>Socket Hold­down<br>Total length from panel surface including relay socket<br>SH2B-05B: 61.5 (63.5) max., SH2B-51: 39.6 (41.6) max. Mounting Style Part No. Spring<br>Dimensions in the (  )<br><= a include a hold-down spring. DIN Rail Mount  SH2B-05 ∗ SFA­202<br>Socket (Note) SFA­101<br>4 ø2.6 hole<br>Panel Mount  SH2B-51 SY4S­51F1<br>1 4 Socket SFA­302(Note)<br>(Photo: RH2B­U) 1359 12148 PC Board  SH2B-62 SFA­301(Note)(SY4S­02F1)<br>Mount Socket<br>35.6 max. 6.4 21 Note: Not applicable with SH2B­62.<br>• (SY4S­02F1) is for the relay with check button.<br>3PDT Plug-in Terminal Total length from panel surface including relay socket<br>RH3B-U/RH3B-UL/RH3B-D/RH3B-LD SH3B-05B: 61.5 (63.5) max., SH3B-51: 39.6  [(] 41.6 [) ] max. Applicable Socket and Hold-down Spring<br>Dimensions in the (  ) Socket Hold­down<br>include a hold-down spring. Mounting Style Part No. Spring<br>DIN Rail Mount  SFA­101<br>Socket SH3B-05 ∗ SFA­202<br>ø2.6 hole<br>Panel Mount  SH3B-51 SY4S­51F1<br>Socket SFA­301<br>; (Photo: RH3B­U) 15 26 48 PC Board Mount Socket SH3B-62 SFA­302(SH3B­05F1)<br>9 10 11<br>13 14 • (SH3B­05F1) is for the relay with check button.<br>35.6 max. 31<br>4PDT Plug-in TerminalRH4B-U/RH4B-UL/RH4B-UD/RH4B-ULD  Total length from panel surface including relay socket Applicable Socket and Hold-down Spring<br>SH4B-05B: 61.5  [(] 63.5 [) ] max., SH4B-51: 39.6  [(] 41.6 [) ] max. Socket Hold­down<br>Dimensions in the (  )include a hold-down spring. Mounting Style Part No. Spring<br>DIN Rail Mount  SFA­101<br>Socket SH4B-05 ∗ SFA­202<br>Panel Mount  SY4S­51F1<br>SH4B-51<br>ø2.6 hole Socket (Note)<br>SFA­301<br>(Photo: RH4B­U) 15 26 73 84 PC Board Mount Socket SH4B-62 SFA­302 (SH4B­02F1)<br>[W 9 10 11 i==7 12<br>13 14 Note: Use two SY4S­51F1 hold­down springs for the<br>SH4B­51 socket.<br>35.6 max. 6.4 41 • (SH4B­02F1) is for the relay with check button.<br>C)Operating Temperature (° C)Operating Temperature (° C)Operating Temperature (°<br>4.7<br>0.5 27.5<br>0.5<br>27.5<br>4.7<br>4.7<br>0.5 27.5<br>4.7<br>0.5 27.5<br>**----- End of picture text -----**<br>


## **Dimensions** 

- (SH4B­02F1) is for the relay with check button. 

6 

**RH Series Power Relays** 

**==> picture [496 x 753] intentionally omitted <==**

**----- Start of picture text -----**<br>
SPDT Plug-in Terminal (Top Bracket Mounting) DPDT Plug-in Terminal (Top Bracket Mounting)<br>RH1B-UT RH2B-UT<br>ø2.6 hole ø2.6 hole<br>1<br>5 1 4<br>9 5 8<br>13 14 139 1214<br>3.5 2 3.5 2<br>14.5 35.6 max. 6.4<br>21.5 35.6 max. 6.4<br>3PDT Plug-in Terminal (Top Bracket Mounting) 4PDT Plug-in Terminal (Top Bracket Mounting)<br>RH3B-UT gee RH4B-UT @ poe<br>3.5 ø2.6 hole 2 3.5<br>ø2.6 hole<br>1 2 4<br>5 6 8 1 2 3 4<br>9 10 12 5 6 7 8<br>13 14 139 10 11 1214<br>21.5 2 35.6 max. 6.4 28<br>31.5 35.6 max. 6.4 42 max. 41.5<br>oeerss<br>SPDT PC Board Terminal<br>RH1V2-U/RH1V2-UD 3-ø2.4 holes<br>2-ø2 holes<br>0.5<br>1<br>5<br>(Photo: RH1V2­U) 9<br>13 14<br>35.6 max. 4.6 14<br>Se 4.4<br>DPDT PC Board Terminal  8-ø2.4 holes<br>RH2V2-U/RH2V2-UD 0.5<br>1 4<br>(Photo: RH2V2­U) 5 8<br>9 12<br>atl 13 14<br>10<br>35.6 max. 4.6 21<br>14.2<br>3PDT PC Board Terminal<br>RH3V2-U/RH3V2-UL/<br>11-ø2.4 holes 10 10<br>RH3V2-D/RH3V2-LD<br>1 2 4<br>5 6 8<br>(Photo: RH3V2­U) 9 10 11<br>13 14<br>0.5 31<br>35.6 max. 4.6<br>is Gg an BE<br>4PDT PC Board Terminal  30<br>RH4V2-U/RH4V2-UL/<br>RH4V2-UD/RH4V2-ULD 14-ø2.4 holes 10<br>1 2 3 4<br>5 6 7 8<br>9 10 11 12<br>(Photo: RH4V2­U) 13 14<br>0.5 41<br>bee 35.6 max. 4.6 mal 15:ney<br>All dimensions in mm.<br>EP5385A-RH_June 2025<br>nsPs 7<br>4.7<br>10<br>0.5 4.7 0.5 4.7<br>43.2 38 5.9 27.5 43.2 38 5.9 27.5<br>6.6 4.7 7.25<br>4.7 10 10<br>10 10<br>10<br>4.7<br>0.5 4.7<br>0.5 4.7<br>43.2 38 5.9 28 44 38 5.9 28<br>7.25 7.25<br>1.5 2 4.7<br>7.15<br>0.5 27.5 12.5<br>6.6<br>4.7<br>2 0.5 7.25<br>0.5 7.8 13.15<br>27.5<br>5<br>2<br>2 4.7<br>0.5 27.5 7.8 13.15<br>7.25<br>2<br>4.7<br>7.8 13.15<br>0.5 27.5<br>7.25<br>**----- End of picture text -----**<br>


## Ordering Terms and Conditions 

## Thank you for using IDEC Products. 

By purchasing products listed in our catalogs, datasheets, and the like (hereinafter referred to as “Catalogs”) you agree to be bound by these terms and conditions. Please read and agree to the terms and conditions before placing your order. 

## 1. Notes on contents of Catalogs 

- (1)  Rated values, performance values, and specification values of IDEC products listed in this Catalog are values acquired under respective conditions in independent testing, and do not guarantee values gained in combined conditions. 

- Also, durability varies depending on the usage environment and usage conditions. 

- (2)  Reference data and reference values listed in Catalogs are for reference purposes only, and do not guarantee that the product will always operate appropriately in that range. 

- (3)  The specifications / appearance and accessories of IDEC products listed in Catalogs are subject to change or termination of sales without notice, for improvement or other reasons. 

- (4) The content of Catalogs is subject to change without notice. 

## 2. Note on applications 

- (1)  If using IDEC products in combination with other products, confirm the applicable laws / regulations and standards. 

- Also, confirm that IDEC products are compatible with your systems, machines, devices, and the like by using under the actual conditions. IDEC shall bear no liability whatsoever regarding the compatibility with IDEC products. 

- (2)  The usage examples and application examples listed in Catalogs are for reference purposes only. Therefore, when introducing a product, confirm the performance and safety of the instruments, devices, and the like before use. Furthermore, regarding these examples, IDEC does not grant license to use IDEC products to you, and IDEC offers no warranties regarding the ownership of intellectual property rights or non-infringement upon the intellectual property rights of third parties. 

- (3) When using IDEC products, be cautious when implementing the following. i. Use of IDEC products with sufficient allowance for rating and performance 

- ii.  Safety design, including redundant design and malfunction prevention design that prevents other danger and damage even in the event that an IDEC product fails 

- iii.  Wiring and installation that ensures the IDEC product used in your system, machine, device, or the like can perform and function according to its specifications 

- (4)  Continuing to use an IDEC product even after the performance has deteriorated can result in abnormal heat, smoke, fires, and the like due to insulation deterioration or the like. Perform periodic maintenance for IDEC products and the systems, machines, devices, and the like in which they are used. 

- (5)  IDEC products are developed and manufactured as general-purpose products for general industrial products. They are not intended for use in the following applications, and in the event that you use an IDEC product for these applications, unless otherwise agreed upon between you and IDEC, IDEC shall provide no guarantees whatsoever regarding IDEC products. 

- i. Use in applications that require a high degree of safety, including nuclear power control equipment, transportation equipment (railroads / airplanes / ships / vehicles / vehicle instruments, etc.), equipment for use in outer space, elevating equipment, medical instruments, safety devices, or any other equipment, instruments, or the like that could endanger life or human health 

- ii.  Use in applications that require a high degree of reliability, such as provision systems for gas / waterworks / electricity, etc., systems that operate continuously for 24 hours, and settlement systems 

## 3. Inspections 

We ask that you implement inspections for IDEC products you purchase without delay, as well as thoroughly keep in mind management/maintenance regarding handling of the product before and during the inspection. 

## 4. Warranty 

- (1) Warranty period 

The warranty period for IDEC products shall be one (1) year after purchase or delivery to the specified location. However, this shall not apply in cases where there is a different specification in the Catalogs or there is another agreement in place between you and IDEC. 

- (2) Warranty scope 

Should a failure occur in an IDEC product during the above warranty period for reasons attributable to IDEC, then IDEC shall replace or repair that product, free of charge, at the purchase location / delivery location of the product, or an IDEC service base. However, failures caused by the following reasons shall be deemed outside the scope of this warranty. 

- i. The product was handled or used deviating from the conditions / environment listed in the Catalogs 

- ii. The failure was caused by reasons other than an IDEC product 

- iii. Modification or repair was performed by a party other than IDEC 

- iv.  The failure was caused by a software program of a party other than IDEC 

- v. The product was used outside of its original purpose 

- vi.  Replacement of maintenance parts, installation of accessories, or the like was not performed properly in accordance with the user’s manual and Catalogs 

- vii.  The failure could not have been predicted with the scientific and technical standards at the time when the product was shipped from IDEC 

- viii.  The failure was due to other causes not attributable to IDEC (including cases of force majeure such as natural disasters and other disasters) 

- Furthermore, the warranty described here refers to a warranty on the IDEC product as a unit, and damages induced by the failure of an IDEC product are excluded from this warranty. 

## 5. Limitation of liability 

The warranty listed in this Agreement is the full and complete warranty for IDEC products, and IDEC shall bear no liability whatsoever regarding special damages, indirect damages, incidental damages, or passive damages that occurred due to an IDEC product. 

## 6. Service scope 

The prices of IDEC products do not include the cost of services, such as dispatching technicians. Therefore, separate fees are required in the following cases. 

- (1)  Instructions for installation / adjustment and accompaniment at test operation (including creating application software and testing operation, etc.) 

- (2) Maintenance inspections, adjustments, and repairs 

- (3) Technical instructions and technical training 

- (4) Product tests or inspections specified by you 

The above content assumes transactions and usage within your region. Please consult with an IDEC sales representative regarding transactions and usage outside of your region. Also, IDEC provides no guarantees whatsoever regarding IDEC products sold outside your region. 

- iii.  Use in applications where the product may be handled or used deviating from the specifications or conditions / environment listed in the Catalogs, such as equipment used outdoors or applications in environments subject to chemical pollution or electromagnetic interference If you would like to use IDEC products in the above applications, be sure to consult with an IDEC sales representative. 

**Head Office** 6-64, Nishi-Miyahara-2-Chome, Yodogawa-ku, Osaka 532-0004, Japan **USA** IDEC Corporation **Singapore** IDEC Izumi Asia Pte. Ltd. **EMEA** APEM SAS **Thailand** IDEC Asia (Thailand) Co., Ltd. 

**Singapore** IDEC Izumi Asia Pte. Ltd. **Thailand** IDEC Asia (Thailand) Co., Ltd. **India** IDEC Controls India Private Ltd. 

## **www.idec.com** 

**China** IDEC (Shanghai) Corporation **Japan** IDEC Corporation IDEC Hong Kong Co. Ltd. **Taiwan** IDEC Taiwan Corporation 

**==> picture [95 x 33] intentionally omitted <==**

2025 IDEC Corporation, All Rights Reserved.