18739 | Schneider Electric

Device circuit breaker, 18739, SCHNEIDER

The 18739 is a low voltage circuit breaker. It is a 4P circuit breaker with 4 protected poles and 63 A in rated current and C tripping curve. The rated short circuit breaking capacity goes up to 36 kA at 380 VAC to 415 VAC conforming to EN/IEC 60947-2 standard. This miniature circuit breaker protects circuits against short circuit and overload current. It is suitable for isolation in the industrial sector.

The fault tripping is indicated by a red mechanical state indicator light on the front face of the circuit breaker. It has an electrical endurance going up to 10000 cycles and a mechanical endurance going up to 20000 cycles. According to IEC 60529 standard, the degree of protection is IP20 and IP40 in enclosure.

Features

• Thermal-magnetic
• High breaking capacity
• ON/OFF trip indicator
• Overvoltage category IV
• Protection of the circuit against short-circuit currents