Yueqing Yijin Electronics Co., Ltd.
Shanghai Liangxin NDB1 small circuit breaker accessories
MV+MN overvoltage and undervoltage
The accessories of this series of circuit breakers are auxiliary functional components specially designed by our company for NDB1 series circuit breakers, which achieve remote tripping control and indication of the on/off status of the line
When the main circuit voltage is (85%~110%) Ue, the release should be able to maintain long-term operation of the circuit breaker. When the voltage of the main circuit rises to (280V+5%) or falls to (170V ± 5%), the release combined with the circuit breaker should act to drive the circuit breaker to open. Undervoltage protection interval: (35%~70%)Ue
Scope of use
The accessories of this series of circuit breakers are auxiliary functional components specially designed by our company for NDB1 series circuit breakers, which achieve remote tripping control and indication of the on/off status of the line
Main technical parameters
| product name | model | Rated working voltage Un | Voltage value |
| Overvoltage and undervoltage release device | MV+MN | 230V | Overvoltage value Uvo=280V ± 5% Undervoltage value Uoe=170V ± 5% |
product overview
MV+MN overvoltage and undervoltage release device
Action characteristics:
When the main circuit voltage is (85%~110%) Ue, the release should be able to maintain long-term operation of the circuit breaker. When the voltage of the main circuit rises to (280V+5%) or falls to (170V ± 5%), the release combined with the circuit breaker should act to drive the circuit breaker to open. Undervoltage protection interval: (35%~70%)Ue
| Rated frequency | protection grade | rated insulation voltage | Product width | Ambient Temperature | storage temperature |
| 50/60Hz | IP20 | 500V | 18mm | -35℃~+70℃ | -35℃~+70℃ |
