Application:
NDB1LE-63 type B residual current circuit breaker with overcurrent protection provide protection for sinusoidal AC residual current, pulsating DC residual current, composite residual current, and smooth DC residual current at frequencies up to 1kHz, applicable to new energy, charging station, intelligent building, industrial control and other occasions where frequency conversion technology is used. NDB1LE-63 type B residual current circuit breaker with overcurrent protection (type B RCBO) has the following functions:

● Short circuit protection
● Overload protection
● Residual current protection (type B)
● Isolation (1PN, 3PN not applicable)

Electrical Parameters:

NDB1LE-63 type B RCBO main technical parameters

Other Parameters：

● Isolating function (1PN, 3PN not applicable)
● Leakage visualization
● Wiring
Tunnel type wiring mode
Wiring capacity: Copper cable 1~25mm²
Standard torsional moment: 2.0N.m

● Protection class
Protection class of the circuit breaker body: IP20
To be installed in the distribution box: IP40

Working Conditions:

● Ambient temperature: -25℃~+60℃
● Storage ambient temperature: -40℃~+80℃
● Damp heat resistance: When the ambient air temperature is 55℃, the relative air humidity is ≤95%

● No more than 2000m, in case of use at the higher altitude, refer to the requirements of the miniature circuit breaker for derating. Refer to GB/T 20645 Special environmental conditions technical requirements for low voltage apparatus used in plateau

● Pollution degree: 2
● Can withstand the effects of salt mist and oil mist
● In a medium without explosion risk, and where the medium is not sufficient to corrode metals and damage insulation with gases and conductive dust

● Damage insulation with gases and conductive dust