Arc extinguishing cover of frame circuit breaker7

Product Description

This frame circuit breaker's arc extinguishing cover adopts a high-efficiency multi-stage arc extinguishing structure design. It performs multi-zone, graded treatment of the arc generated during circuit breaker breaking, rapidly drawing the arc into the extinguishing zone for cutting and cooling, achieving efficient synchronization of arc extinguishing and cooling, and significantly shortening the arcing time. The product's structural design is adapted to the operating characteristics of frame circuit breakers, effectively avoiding problems such as arc reignition and contact erosion, improving the circuit breaker's breaking capacity, strengthening the short-circuit protection performance of the electrical system from the core component level, significantly reducing the risk of equipment malfunction, and comprehensively improving the overall safety level and long-term operational reliability of the power distribution system, making it suitable for demanding applications in industrial power distribution scenarios.

Composition

4 self-tapping screws_ST2.9×9.5 (F type)_carburized steel/galvanized 5 colorless passivation_GB/T846 + 2 screws_M3×6_carbon steel/blackened (8.8 grade)_GB/T68 + 38 arc-starting plates + 2 arc-isolating walls + 2 covers

Arc-starting plates: No. 3 is cast iron, No. 4 is cold-rolled steel plate_Q235_2, Nos. 5 and 8 are cold-rolled steel plate_Q235_1.5
Arc-isolating walls: laminated melamine resin rigid 2
Cover: flame-retardant reinforced nylon 66 black

Parameters