Double pole 40 amp miniature circuit breaker (MCB) offers essential overload and short-circuit protection. This micro circuit breaker is commonly used for branch circuit protection in residential electrical installations, providing safety for air conditioners, electric water heaters, or kitchen appliances.

Double Pole MCB Breaker Information

• Rated Current: 40 amp
• Rated Voltage: 230/400V AC, 50Hz
• Number of poles: 2 poles
• 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

Double Pole MCB Breaker Dimensions (Unit: mm)

Details

Tips: Troubleshooting of miniature circuit breaker

1. The inlet and outlet connections of the mini 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 on 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, 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.