Sdkc 20A Miniature Circuit Breaker with High Breaking Capacity

A 1P miniature circuit breaker only controls one live wire and is used to protect the live wire in a single-phase circuit from overload and short-circuit faults. The neutral wire is directly connected without being controlled by the circuit breaker; A 2P miniature circuit breaker can control both the live wire and the neutral wire, and can cut off both in case of a fault, which is safer. It is suitable for scenarios that require disconnecting the bipolar power supply at the same time, such as el

Type B: The tripping current is 3-5 times the rated current. It is sensitive to short-circuit current and suitable for purely resistive loads (such as incandescent lamps, electric heaters). It can quickly cut off the circuit in case of a short circuit. Type C: The tripping current is 5-10 times the rated current. It is suitable for common mixed loads (such as mixed lighting and socket circuits). It can withstand a certain impact current to prevent false tripping when the equipment starts. Type D

Yes, and it is widely used in household circuits. Usually, a 1P miniature circuit breaker is used with a 1P+N or 2P residual current device. The 1P miniature circuit breaker is responsible for overload and short-circuit protection, and the residual current device is responsible for detecting leakage current (if it exceeds 30mA). They work together to protect line equipment and ensure personal safety.

When installing, the following points should be noted: 1. Wiring Direction: Clearly marked 'upper inlet and lower outlet', that is, the live wire of the power supply is connected from the upper inlet terminal, and the lower outlet terminal is connected to the load. Reversing the connection may affect the tripping performance or cause false actions. 2. Neutral Wire Handling: The neutral wire does not pass through the 1P miniature circuit breaker and needs to be directly connected to the neutral b

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