Arc extinguishing cover for small circuit breaker43

Product Description

This miniature circuit breaker arc extinguishing cover serves as a critical functional component in low-voltage distribution systems, designed to enhance breaking safety and operational reliability. Manufactured from high-insulation materials, it effectively isolates arcs from external structures during breaker operation, preventing arc leakage and energy dispersion. This structural and material design reduces fault occurrence risks, further strengthening overall system operational safety.
During circuit breaker closing/opening operations or short-circuit interruptions, contact separation generates high-temperature, high-energy arcs posing potential threats to surrounding components and the external environment. This arc extinguishing cover confines the arc within a controlled space through its superior electrical insulation properties, preventing direct arc exposure to metal structures or adjacent live parts. This effectively mitigates fault hazards such as phase-to-phase short circuits and breakdown discharges. Stable insulation isolation capabilities provide a reliable safety foundation for circuit breakers.
Material selection prioritizes arc resistance, thermal endurance, and long-term stability. High-insulation materials resist carbonization and aging under high-temperature and arc-impact conditions, maintaining consistent insulation performance and structural integrity over extended periods. This ensures the arc-extinguishing cover sustains isolation and protection functions during frequent interruptions and prolonged operation, meeting reliability and durability requirements for low-voltage distribution equipment.
Structurally, the arc extinguishing cover is highly compatible with the internal layout of miniature circuit breakers, ensuring secure installation and precise positioning. It maintains stability during the instantaneous breaking process, keeping the arc consistently confined within the controlled zone. The optimized internal space design facilitates arc energy attenuation and heat dissipation, further reducing wear on contacts and surrounding components while extending the overall service life of the circuit breaker.
This miniature circuit breaker arc extinguishing hood is suitable for diverse applications including industrial power distribution systems, building and residential distribution installations, complete switchgear assemblies, and terminal power protection systems. It is compatible with multiple miniature circuit breaker models. By effectively isolating the arc from external structures, the product plays a crucial role in reducing equipment failure rates and enhancing system safety levels.
Overall, leveraging the reliable isolation properties of its high-insulation materials, this product delivers stable and sustained arc-extinguishing protection for miniature circuit breakers. It effectively reduces operational risks while enhancing the safety and reliability of low-voltage power distribution systems, making it an ideal choice for critical circuit breaker component selection.

Composition

8 long arc-extinguishing discs+3 short arc-extinguishing discs+ 1 clamping plate.

The arc-extinguishing discs are made of Q195 strip steel that has undergone 72 hours of Cu2Ni3 salt spray treatment. The long arc-extinguishing discs measure 0.8*89 mm, and the short arc-extinguishing discs measure 0.8*49.5 mm.

The clamping plate is made of green steel paper and measures 0.8*22.1 mm.