28 December 2020
Response time of the shunt trip and shunt close for the Masterpact NW and NTProduct Line:
Insulated Case Circuit BreakersEnvironment:
Masterpact NT and NWResolution:
- Circuit Breaker OPEN time at nominal voltage is: 50 ms ±10 ms (40ms to 60 ms).
- Shunt trip (MX) and shunt close (XF) circuits must be energized for minimum of 200 ms.
- Circuit breaker CLOSE time:at nominal voltage is:
- NW 4000 A and smaller: 70 ms ±10
- NW > 4000 A: 80 ms ±10
- 55 ms for the Masterpact NT