Contact Assembly for MCB Miniature Circuit Breaker (3052115)
1. The static contact is a fixed conductive contact part in the circuit breaker, which cooperates with the moving contact to connect and disconnect the circuit. Its core function is to conduct current and maintain circuit conduction. 2. The arc-starting plate (also called "arc guide plate") is an important part of the arc extinguishing system of the circuit breaker. Its core function is to guide the arc from the contact gap to the arc extinguishing chamber and accelerate the arc cooling and extinguishing through its own characteristics. The existence of the arc-starting plate prevents the arc from staying on the contact surface for a long time, reducing contact burns; at the same time, through directional guidance, it ensures that the arc enters the arc extinguishing chamber and is extinguished efficiently, shortens the breaking time, and improves the breaking capacity and service life of the circuit breaker.
As a contact assembly manufacturer, HAIPART understands that the contact system is the core driver of a circuit breaker's breaking capacity. The static contacts are forged from a chromium-copper alloy, with a 20μm silver coating on the contact surface, ensuring a contact resistance of ≤5μΩ after a mechanical lifespan of 20,000 cycles. The arc striker plate utilizes an innovative segmented honeycomb structure, accelerating arc transfer through a dual-channel magnetic blow-off effect and pneumatic flow guidance, reducing breaking time to less than 8ms.
Why Choose HAIPART Contact Assembly?
✅
Conduction-Arc Extinguishment Synergistic System
✅
Anti-Damage Composite Protection
✅
Scenario-Adaptive Capability
Applications:
Suitable for new energy, rail transit, smart grid, and other applications.
As a contact assembly manufacturer, HAIPART understands that the contact system is the core driver of a circuit breaker's breaking capacity. The static contacts are forged from a chromium-copper alloy, with a 20μm silver coating on the contact surface, ensuring a contact resistance of ≤5μΩ after a mechanical lifespan of 20,000 cycles. The arc striker plate utilizes an innovative segmented honeycomb structure, accelerating arc transfer through a dual-channel magnetic blow-off effect and pneumatic flow guidance, reducing breaking time to less than 8ms.
Why Choose HAIPART Contact Assembly?
✅
Conduction-Arc Extinguishment Synergistic System
✅
Anti-Damage Composite Protection
✅
Scenario-Adaptive Capability
Applications:
Suitable for new energy, rail transit, smart grid, and other applications.
