Arc extinguishing cover of frame circuit breaker3

Product Description

The arc-extinguishing cover of a frame circuit breaker is a critical component for achieving safe disconnection and internal protection. Its performance level directly impacts the operational reliability of power distribution systems and the safety of personnel and equipment. This arc-extinguishing cover for frame circuit breakers is designed and manufactured with comprehensive consideration for arc resistance, impact resistance, and insulation reliability. It effectively suppresses arc propagation under complex operating conditions, significantly enhancing the overall protection level of the circuit breaker. This meets the high standards for safety and stability demanded by industrial power distribution systems.
When circuit breakers interrupt high currents or experience short-circuit faults, they generate high-temperature, high-energy arcs that exert intense impact on internal structures and adjacent components. Constructed from insulation materials with outstanding arc resistance, this arc-extinguishing cover maintains structural integrity under arc exposure. It effectively resists arc erosion, preventing material carbonization, cracking, or performance degradation, thereby ensuring long-term reliable operation of the circuit breaker.
Additionally, the arc-extinguishing cover exhibits robust resistance to mechanical impact. It maintains structural integrity under arc energy release and operating shock conditions, preventing deformation or damage caused by vibration or impact. Its reliable insulation properties effectively isolate live components, preventing arc propagation to other functional areas. This reduces the risk of internal short circuits and secondary faults, further enhancing the internal protection capabilities of the circuit breaker.
Structurally, the arc extinguishing cover employs rational spatial layout and arc-guiding design to effectively direct and confine arc movement. This ensures controlled arc development within the cover, preventing uncontrolled diffusion. Such design not only enhances arc-extinguishing efficiency but also minimizes direct arc impact on contacts, insulating components, and metal structures, thereby extending the service life of critical parts.
Furthermore, this product features a compact structure and strong compatibility, enabling stable integration with various frame circuit breaker models. Its convenient installation and maintenance/replacement capabilities help reduce equipment operation and maintenance costs. Its stable and reliable performance ensures the circuit breaker maintains excellent safety protection in industrial plants, commercial buildings, power facilities, and other medium-to-large distribution systems.
In summary, this frame circuit breaker arc-extinguishing cover, with its outstanding arc resistance, impact resistance, and insulation properties, effectively enhances the internal protection level and operational reliability of the circuit breaker. It is a critical component for ensuring the safe and stable operation of industrial power distribution systems.

Composition

1 panel + 5 arc-isolating plates + 1 arc-initiating plate + 17 arc-extinguishing plates + 8 arc-extinguishing components + 4 rivets + 4 screw assemblies.

Panel: 4 steel plates 10
Arc-isolating plates: Nos. 2 and 6 are PA46 GF25 FR17 ​​V-0 natural color; Nos. 3 and 5 are 2.4GPO-3; No. 4 is BMC 461-12 (1.5mm) (E53587) dark gray PANTONE 7540C
Arc-initiating and arc-extinguishing plates: 2.5 cold-rolled steel plates 10
Arc-extinguishing components: Nos. 9, 10, 11, and 12 are PA46 GF (30) FR (17) V-0 natural color; No. 13 is 1 stainless steel plate SUS304
Rivets: 2.5 round copper wire T2-H04
Screw assemblies: GB/T 9074.4 M5X10

Parameters