Circuit Breaker Shunt Trip and Undervoltage Release
This shunt trip release remotely trips a circuit breaker upon receiving a signal. The undervoltage release trips the breaker when voltage drops, protecting against voltage sags and power outages.
Technical Specifications
Overview
Dual-Function Release Module
This auxiliary module integrates both MN undervoltage and MX shunt release functionalities to provide comprehensive control and protection for circuit breakers. Designed for remote tripping and fail-safe operation, it ensures the circuit breaker opens automatically during power loss or upon receiving an external signal. This solution is essential for emergency shutdown systems and preventing automatic equipment restarts after power failures.
Technical Specifications
Electrical Ratings
220 V
Voltage Range (50/60Hz)
208 V
Voltage Range (60Hz)
10 VA
Power Rating
- Compatible Circuit Breakers
- CNSXCNSVCNSCNSD
- Connection Type
- Integrated terminal blocks (wires up to 1.5 mm²)
MN Undervoltage Release
Opening Conditions
- Automatic opening: Voltage ≤ 0.35 x Un
- Opening possible (not guaranteed): 0.35 < Voltage < 0.7 x Un
- No opening: Voltage > 0.7 x Un
- Closing Conditions
- Closing ensured when voltage supply ≥ 0.85 x Un; impossible without supply.
MX Shunt Release
- Operation Mode
- Impulse-type (≥ 20 ms) or maintained order
- Opening Threshold
- 0.7 x Un
Operational Logic
Standard Compliance
IEC 60947-2
- Tripping Priority
- Yes
- Reset Required After Trip
- Yes
