The ESR4-NM-21 is a dual-channel safety relay rated for 24 V DC operation, intended for contact monitoring in safety circuits. It provides two enabling paths and one signal contact, with four non-delayed enabling contacts. Compliance is confirmed to IEC/EN 60204 Stop Category 0 and Stop Category 1. The device mounts on DIN rail and is engineered for industrial environments requiring reliable verification of external contactor or relay status within safety-related control systems. All functional behavior aligns with the specified safety standards for stop functionality and contact monitoring.
| Electrical rating | |
| Voltage Rating | 24V DC |
| Physical details | |
| Type | Safety relay |
| General information | |
| Standards | IEC/EN 60204 Stop Category 0/1 compliant |
| Application | for contact monitoring |
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