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The motor protection relay DHC is a temperature monitoring relay for electric motors. It evaluates the resistance values of the PTC thermistors built into the motor winding. A non-volatile restart lock ensures that the relay remains locked in the event of a power failure, i.e. no uncontrolled restart takes place.
The advantages are high safety through restart lock and closed-circuit current principle. Several sensor resistances can also be connected to a relay. The motor is restarted via an integrated acknowledgment button after the normal temperature has been reached.
| Applications | Motor protection on machine tools, compressors, conveyor belts |
| Supply voltage | AC 24 V |
| Exit | 1 make contact |
| Max. Switching capacity relay output | AC 250 V; 5 A; 1250 VA |
| Response range | 1.65 - 4.0 kOhm |
| (PTC thermistor) | |
| Acknowledgment | button on the front |
| LED display | Operational readiness (green); |
| Overtemperature / relay contact open (red) | |
| Width x Height x Depth | 22.5 x 99 x 114 mm |
Additional information on the product DHC - motor protection relay
Supplier : Hermann ZANDER GmbH & Co. KG
Scope of delivery : see standard equipment. Please inquire about optional or other equipment.