2 pole 40 amp miniature circuit breaker provides overload and short circuit protection, which is commonly used for branch circuit protection in residential.

Circuit Breaker Information

• Rated Current: 40 amp
• Rated Voltage: 230/400V
• Number of pole: 2 poles
• 6 kA short circuit breaking capacity
• Compliance with IEC standard
• C curve trip characteristic gives you the ability to configure the exact protection scheme you required.

Technical Data

Circuit Breaker Dimensions (Unit: mm)

Tips: Troubleshooting of miniature circuit breaker

1. The inlet and outlet connections of the miniature circuit breaker are directly tightened with bolts. In situations where the load changes greatly, they are not checked and tightened in time, resulting in poor local contact.
2. It is used in occasions with high inrush current, such as computer and classroom control switches. And there are often phenomena such as closing and tripping and mechanism failure.
3. The contacts of individual miniature circuit breakers are oxidized, causing contact failure. In the home power distribution installation, in order to meet the requirements of large variable loads, the rated capacity of the main power switch should be a larger miniature circuit breaker, and the leakage protection device should be matched. The miniature circuit breaker of the output branch should be selected according to the actual calculated load capacity.