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Product Details
B type residual current circuit breaker (earth leakage protection)

The B type residual current circuit breakers provide:
Protection in the event of a continuous fault current on three-phase networks generated by:
- Controllers and variable speed drives
- Battery chargers and inverters
- Backed-up power supplies

They include and also guarantee protection against fault currents:
- Sinusoidal AC residual currents (AC type)

- Pulsed DC residual currents (A type)

According to IEC 60947
Insulation voltage (Ui) 400 V
Pollution degree 3
Rated impulse withstand voltage (Uimp) 4 kV
Making and breaking capacity (Im/IDm) 25/40 A 500 A
63/80 A 800 A
125 A 1250 A
Surge current withstand (8/20 μs) without tripping No selective 250 Â
Selective 3 kÂ
Conditional rated short circuit current (Inc/IDc) 25/40 A with FU 80 A gG fuse 63 A with FU 100 A gG fuse 10,000 A 10,000 A
80/125 A with FU 125 A gG fuse 10,000 A
Degree of protection Device only IP20
IP40 with screw shield
Device in modular enclosure IP40
Insulation classe II
Endurance (O-C) Electrical > 2 000 cycles
Mechanical > 5 000 cycles
Operating temperature -25°C to +40°C
Storage temperature -40°C to +85°C

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