Main technical characteristics of AFB arc-free circuit breaker
Name of parameter | Unit of measurement | Value | |
AFB 25 | AFB 40 | ||
Voltage | |||
Maximum operating voltage Umax | V DC | 1000 | |
Insulation voltage UNm | V DC | 1800 | |
Test impulse voltage, UNi | V DC | 10000 | |
Maximum switching overvoltage Zone B acc. to EN50124-2 (< 20 ms) |
V DC | <2500 | <6000 |
Current | |||
Rated service current INe | А DC | 2500 | 4000 |
Duty class acc. to IEC 60146-1-1 | - | VI | |
Short-circuit current | |||
Steady-state short-circuit current INss | kA | 80 | |
Peak of the short-circuit current ȊNss | kA | 100 | |
Maximum breaking current Imax | kA | 25 | |
Forward current di/dt limit | kA/ms | 20 | |
Time | |||
Contacts opening time | ms | < 1 | |
Total break time | ms | < 4 | |
Breaking current setting range | |||
Forward breaking current setting range | A | 400 - 7500 | 400 - 12000 |
Reverse breaking current setting range | A | 400 - 3750 | 400 - 7500 |
Weight and size parameters | |||
Circuit breaker weight | kg | 215 | 300 |
WхHхD (L) | mm | 475x810x955 | 475x1050x955 |
Additional data | |||
Commutation life | switchings | 3х50 000 | |
Protection level | - | IP00 | |
Auxiliaries supply voltage | V DC | 110, 220 |