Arc extinguishing cover of frame circuit breaker2

Product Description

The arc extinguishing cover of a frame circuit breaker is a critical functional component ensuring safe breaking and long-term stable operation. Its structural performance directly impacts the breaker's reliability under high currents and complex operating conditions. This arc-extinguishing cover for frame circuit breakers is designed with thorough consideration of arc characteristics and energy release patterns. Through a scientifically optimized internal structure layout, it effectively controls arc energy, significantly reducing thermal shock and contact wear during the breaking process, thereby providing more stable and secure operational assurance for the circuit breaker.
When breaking a circuit, the arc inevitably generates high temperatures and intense energy release. Through optimized structural design, this arc extinguishing cover guides the arc along a predetermined path within the cover body. This process elongates, disperses, and cools the arc, causing its energy to rapidly decay within a short timeframe, thereby achieving fast and reliable arc extinction. This structure not only effectively suppresses the disordered diffusion of the arc but also significantly reduces the direct impact of the arc on the contacts and surrounding components.
By effectively controlling arc energy, the arc extinguishing hood substantially reduces contact erosion during operation. It minimizes material fatigue and thermal damage caused by high temperatures, thereby extending the service life of contacts and the circuit breaker as a whole. Even under demanding conditions such as high-current breaking, frequent operations, and short-circuit faults, it maintains stable arc-extinguishing performance, enhancing the operational reliability and safety margin of frame circuit breakers.
In terms of materials and manufacturing processes, the arc extinguishing hood utilizes materials with excellent heat resistance and reliable insulation properties. Combined with precision machining techniques, it ensures accurate structural dimensions and high consistency in internal channels, contributing to enhanced arc control effectiveness. Simultaneously, the product possesses good mechanical strength and impact resistance, capable of withstanding mechanical stresses from long-term operation and repeated closing/opening cycles.
Furthermore, this arc-extinguishing cover features a compact structure and excellent assembly compatibility, enabling reliable matching with various frame circuit breaker models. It facilitates installation, maintenance, and replacement, thereby reducing equipment operation and maintenance costs. Its stable performance ensures enhanced safety and reliability for circuit breakers in industrial power distribution, commercial buildings, power systems, and other application scenarios.
Overall, through rational structural design and reliable performance, this frame circuit breaker arc extinguishing cover effectively enhances the breaker's stability and service life under high-current conditions. It serves as a critical component for improving the safety and operational efficiency of power distribution systems.

Composition

5 arc-blocking plates + 4 screw assemblies + 17 arc-extinguishing plates + 1 arc-starting plate + 4 arc-extinguishing components + 4 rivets + 4 flame-extinguishing plates + 1 mounting plate

Arc-blocking plates: No. 1 and 4 are 2.4GPO-3; No. 2 is BMC CSL350GY; No. 7 is PA46 GF30 FR (17) V-0 natural color

Screw assemblies: GB/T 9074.4 M4X10

Arc-extinguishing plates, arc-starting plates: 2.5 cold-rolled steel plate 10

Arc-extinguishing components: No. 8 is PA46 GF (30) FR (17) V-0 natural color; No. 12 is 1 stainless steel plate SUS304

Rivets: 2.5 round copper wire T2-H04

Flame-extinguishing plates: PA46 GF30 FR (17) V-0 natural color

Mounting plate: 4 cold-rolled steel plates 10

Parameters