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| Part Number | RH4B-UDC24V | RH4B-UAC24V | RH4B-ULDC24V | RH4B-ULAC120V | RH4B-ULCDC24V |
| Manufacturer | IDEC | IDEC | IDEC | IDEC | IDEC |
| Series | RH | RH | RH | RH | RH |
| Packaging | Bulk | Bulk | Bulk | Bulk | Bulk |
| Product Status | Active | Active | Active | Active | Active |
| Mounting Type | Socketable | Socketable | Socketable | Socketable | Socketable |
| Coil Voltage | 24VDC | 24VAC | 24VDC | 120VAC | 24VDC |
| Contact Form | 4PDT (4 Form C) | 4PDT (4 Form C) | 4PDT (4 Form C) | 4PDT (4 Form C) | 4PDT (4 Form C) |
| Contact Rating (Current) | 10 A | 10 A | 10 A | 10 A | 10 A |
| Switching Voltage | 120VAC, 28VDC - Max | 120VAC, 28VDC - Max | 120VAC, 28VDC - Max | 120VAC, 28VDC - Max | 120VAC, 28VDC - Max |
| Load - Max Switching | 1200VA, 280W | 1200VA, 280W | 1200VA, 280W | 1200VA, 280W | 1200VA, 280W |
| Coil Current | 62 mA | 83 mA | 62 mA | 16.5 mA | 62 mA |
| Coil Type | Non Latching | Non Latching | Non Latching | Non Latching | Non Latching |
| Features | - | - | Lighted Indicator | Lighted Indicator | Lighted Indicator, Test Button |
| Termination Style | Plug In, Quick Connect - 0.187" (4.7mm) | Plug In, Quick Connect - 0.187" (4.7mm) | Plug In, Quick Connect - 0.187" (4.7mm) | Plug In, Quick Connect - 0.187" (4.7mm) | Plug In, Quick Connect - 0.187" (4.7mm) |
| Seal Rating | - | - | - | - | - |
| Coil Insulation | - | - | - | - | - |
| Must Operate Voltage | 19.2 VDC | 19.2 VAC | 19.2 VDC | 96 VAC | 19.2 VDC |
| Must Release Voltage | 2.4 VDC | 7.2 VAC | 2.4 VDC | 36 VAC | 2.4 VDC |
| Operate Time | 25 ms | 25 ms | 25 ms | 25 ms | 25 ms |
| Release Time | 25 ms | 25 ms | 25 ms | 25 ms | 25 ms |
| Operating Temperature | -25°C ~ 70°C | -25°C ~ 70°C | -25°C ~ 70°C | -25°C ~ 70°C | -25°C ~ 70°C |
| Contact Material | Silver Cadmium Oxide (AgCdO) | Silver Cadmium Oxide (AgCdO) | Silver Cadmium Oxide (AgCdO) | Silver Cadmium Oxide (AgCdO) | Silver Cadmium Oxide (AgCdO) |
| Relay Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
| Grade | - | - | - | - | - |
| Qualification | - | - | - | - | - |
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