Key Features :
- Suitable for motors with built-in PTC sensors in applications such as elevators, cranes, hoists and similar installations.
- Protection against phase imbalance, phase loss, phase sequence and overtemperature.
- To protect three phase devices.
- Monitoring of short circuit and broken wire in PTC circuit.
- Self-powered by voltage to be monitored.
- Visual indication of tripping cause.
- DIN rail mounting.
Protection functions :
- Phase imbalance or phase loss
- Overtemperature
- Phase sequence
- Thermistor short-circuit
ST4
ST-D
