Introduction
DAB7LN -40 residual current circuit breakers are small devices designed with high breaking capacity (6kA) and they are suitable for the disconnection of neutral lines.

The circuit breakers are widely used in AC50H low-voltage electrical systems with a rated voltage of 230V and rated current of no more than 40A. This effectively protects people from electric shock and circuit equipment form overcurrent or short circuiting.

These circuit breakers are also suitable for preventing fire hazards as a result of ground currents caused by insulation damage of electrical equipment.

Functions of DAB7LN-40 residual current circuit breaker
Short circuit protection, overload protection and isolation.

Physical parameters of DAB7LN-40 residual current circuit breaker
Standard of conformity: IEC61009, GB16917
Protection grade: IP40
Flame retardant grade: grade 2
Electric wire: 1~35mm²
Operating temperature: -5~+40℃
Altitude: ≤2000
Relative humidity: +20℃,≤90%; +40℃,≤50%
Class of pollution: 2
Installation method: Using 35mm IEC standard
Installation environment: Avoid obvious shock and vibration
Installation grade: grade II, grade III
Size (W*H*L): 18×80×72

Mechanical enduranceof DAB7LN-40 residual current circuit breaker
Actual endurance: 12,000 times
Standard endurance: 4,000 times

Electricalendurance of DAB7LN-40 residual current circuit breaker
Actual endurance: 6,000 times
Standard endurance: 4,000 times