Product Details

B type residual current circuit breakers

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)

Applications requiring 'B' types include:

EV & PV installations
Frequency converters
UPS installations
High-frequency power converters
Building site power supply cabinets

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
	100 A	1000 A
Surge current withstand (8/20 μs) without tripping	No selective	250 Â
Surge current withstand (8/20 μs) without tripping	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
Conditional rated short circuit current (Inc/IDc)	80/100 A with FU 100 A gG fuse	10,000 A
Degree of protection	Device only	IP20
	Device only	IP40 with screw shield
	Device in modular enclosure	IP40
	Device in modular enclosure	Insulation classe II
Endurance (O-C)	Electrical	> 2 000 cycles
Endurance (O-C)	Mechanical	> 5 000 cycles
Operating temperature		-25°C to 40°C
Storage temperature		-40°C to 85°C

Model Selection:

Rated Current	Pole	Model
(A)	Pole	30mA	100mA	300mA	500mA
25	2	GDR22530B	GDR225100B	GDR225300B	GDR225500B
40	2	GDR24030B	GDR240100B	GDR240300B	GDR240500B
63	2	GDR26330B	GDR263100B	GDR263300B	GDR263500B
25	4	GDR42530B	GDR425100B	GDR425300B	GDR425500B
40	4	GDR44030B	GDR440100B	GDR440300B	GDR440500B
63	4	GDR46330B	GDR463100B	GDR463300B	GDR463500B