The SPAJ140C series phase current and neutral point overcurrent combined relays are used for protection against local short circuits of radiating feeders in high current grounding, resistor grounding and neutral ungrounded networks, including time-limited overcurrent and high values, low value grounding. Fault protection.The protection device also contains a complete set of short circuit breaker failure protection.
SPAM150C is a comprehensive current measuring multi-function relay with full protection of AC motor. It is suitable for various contactors, relay controlled motor overload, grounding and other protection. The thermal state of the motor is calculated based on the measured value, and when an abnormal fault is detected, the protection component immediately provides an alarm signal or trips the circuit breaker.
Overcurrent and earth-fault relay
Motor Protection Relay