Low Voltage Circuit Breakers
Mitsubishi low voltage circuit breakers create a future of the electrical equipment.
For over a half of a century Mitsubishi low voltage circuit breakers meet the needs of market. Including the WS-V series equipped with a new breaking technology, Mitsubishi Low Voltage Circuit Breakers have various lineups depending on the electric power market and the machinery.
Types of Low-voltage Circuit Breakers
- The following IEC Standards apply to low-voltage circuit breakers.
- There are multiple product standards for the same type of device.
- The standards system applies to industrial use (a skilled person handling the device) and household use (a person handling device has no experience.)
| Typical abbreviation | IEC standard | Mitsubishi Models | |
|---|---|---|---|
| MCCB, ACB | IEC 60947-2 | Low-voltage switchgear and control gear - Part 2: Circuit-breakers | NF type low-voltage circuit breaker, AE type low-voltage air circuit breaker |
| ELCB | IEC 60947-2 Annex B | Low-voltage switchgear and control gear - Part 2: Circuit-breakers Annex B: Circuit-breakers incorporating residual current protection | NV type earth leakage circuit breaker |
| MCB | IEC 60898-1/-2 | Circuit-breakers for overcurrent protection for household and similar installations | BH-D, BHW-T type miniature circuit breaker |
| RCCB | IEC 61008-1 | Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) | BV-D, BVW-T type earth leakage circuit breaker |
| RCBO | IEC 61009-1 | Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) | BV-DN type earth leakage circuit breaker |
| CBE | IEC 60934 | Circuit-breakers for equipment | CP type circuit protector |
ACB: Air Circuit Breaker, MCCB: Molded Case Circuit Breaker, ELCB: Earth-Leakage Circuit Breaker, MCB: Miniature Circuit Breaker