Single pole miniature circuit breaker (MCB) is a type of electrical protection switch used to automatically protect an electrical circuit from overload or short circuits. This 1 pole mini circuit breaker with a 3 amp rated current is commonly used in residential and light commercial installations.

Single Pole MCB Breaker Information

• Rated Current: 3 amp
• Rated Voltage: 230/400V AC, 50Hz
• Number of poles: 1 pole
• 6 kA rated short-circuit breaking capacity
• Compliant with IEC standard
• C curve trip characteristic
• With overload protection and short circuit protection function

Technical Data

Single Pole MCB Breaker Dimension (Unit: mm)

Details

Tips: Difference among circuit breakers 1P, 1P + N, 2P
Circuit breakers used in single-phase circuits include three types 1P, 1P + N, and 2P.

1. Among them, a 1P circuit breaker is used to cut off the firing line and monitor the current on the firing wire, protecting the firing line from tripping once the current on the firing line reaches a certain rated current.
2. 1P + N circuit breaker is used to cut off the firing line and null line, protecting the firing line by only detecting the fire line not the null line.
3. 2P circuit breaker is used to cut off the firing line and null line and detect the current on them.

Standard lamp circuit takes the form of 1P or 1P + N circuit break. The socket circuit should be attached with electric leakage protection accessories. The standard five-hole socket is installed with 1P or 1P + N residual current breaker and a three-hole socket with a 2P residual current circuit breaker.