Series selection summary
Ratings verified against the manufacturer catalogs. The full Icu / Ics / Icm matrix per voltage level is available on request.
| Series | Type | Frame sizes | Ue | In | Poles | Key feature |
|---|---|---|---|---|---|---|
| KFW3 | Air circuit breaker (ACB) | 1600 / 2500 / 4000 / 5000 / 8000 | AC690V and below | 400–8000A | 3P / 4P | M / N / H breaking types; Icu 55–150 kA @ AC400V |
| KFM3X | Molded case circuit breaker (MCCB) | 100 / 160 / 250 / 400 / 630 / 800 | AC690V and below | up to 800A | 3P / 4P | C economy / S standard / M higher / H high breaking |
| KFM3XE | Intelligent MCCB | 125 / 160 / 250 / 400 / 630 / 800 (+KFM3E-1600) | AC690V and below | up to 800A (1600A on KFM3E-1600) | 3P / 4P | LCD intelligent controller (knob type on KFM3E-1600) |
| KFM3XL | Residual current MCCB | 100 / 160 / 250 / 400 / 630 / 800 | AC400V | up to 800A | 3P / 4P | Residual current (earth leakage) protection |
ACB
KFW3 Series Air Circuit Breaker
- Frame sizes1600 / 2500 / 4000 / 5000 / 8000
- Rated operational voltage UeAC690V and below (unified)
- Rated current In400–8000A
MCCB
KFM3X Series Molded Case Circuit Breaker
- Frame sizes100 / 160 / 250 / 400 / 630 / 800
- Rated operational voltage UeAC690V and below
- Rated current InUp to 800A; 630A and below for motor protection
Intelligent MCCB
KFM3XE Series Intelligent Molded Case Circuit Breaker
- Frame sizes125/160/250/400/630/800, plus KFM3E-1600
- Rated operational voltage UeAC690V and below
Residual Current MCCB
KFM3XL Series Residual Operated Current Molded Case Circuit Breaker
- Frame sizes100 / 160 / 250 / 400 / 630 / 800
- Rated operational voltage UeAC400V
- Rated current InUp to 800A