446-S-H-N-SI-150A Circuit Protection

Circuit breakers are safety devices that detect and interrupt electrical overcurrents in an electrical circuit. 446-S-H-N-S1-150A is one type of circuit breaker. It protects electrical circuits from overloads and shorts, providing reliable protection against electrical problems.

446-S-H-N-S1-150A is a commonly used type of AC circuit breaker, mainly composed of contact pair, arc extinguishing device, overload protection device, short-circuit protection device, arc protection device, etc. Commonly used types are three-pole, four-pole and combined type (with door opening and closing function).

The application field of 446-S-H-N-S1-150A includes the following:

• Household electric appliances: It is mainly used in the circuit protection of home appliances such as air conditioners, refrigerator, washing machine, electric water heater, microwave oven, etc.
• Industrial electric appliances: It is mainly used in the protection of industrial electric appliances, such as motor, transformer, compressor, PLC, etc.
• Building lighting: It is mainly used in the protection of building lighting circuits, such as street lights, office lighting, etc.
• General Purpose: It is mainly used in the protection of general purpose circuits, such as direct current circuits, low-voltage electrical appliances, etc.

446-S-H-N-S1-150A has the following working principles:

• Firstly, when the current in the circuit reaches the interrupting capacity of the circuit breaker, its operating mechanism is triggered, the moving contact is separated from the static contact, and the current is cut off. At this time, the arc extinguishing device must work.
• Secondly, when the circuit breaker is released, the reset mechanism should be activated, the moving contact is restored to the static contact, and the circuit is reclosed. At this time, the overload protection device and the short-circuit protection device should work.
• Thirdly, when the moving contact is separated from the static contact, the arc protection device should work to prevent the arc produced by the arc from spreading and damaging the insulation of the circuit breaker. Finally, when the circuit breaker is turned on, the current should be gradually increased in order to prevent sudden large inrush current from destroying the circuit breaker.

In short, 446-S-H-N-S1-150A is a type of AC circuit breaker used for electrical protection in various applications. It has multiple application fields and working principles, providing reliable and safe circuit protection.