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
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