Explosion proof circuit breaker is an electrical protection device specifically designed for flammable and explosive hazardous areas. It can safely cut off the circuit in the event of faults such as short circuit or overload, while preventing explosions caused by arcs or high temperatures.

Application scenarios

Petrochemical industry: refineries, tank farms, pipeline pumping stations.

Underground coal mine: mining equipment, ventilation system power distribution.

Gas facilities: liquefied gas stations, gas pipeline control cabinets.

Dust environment: Flour mill, aluminum powder processing workshop.

Key points for installation and maintenance

Installation specifications

Explosion proof sealing joints (such as armored cable clamping devices) are required for cable entry ports.

Do not open the lid while it is live.

Grounding must be reliable to prevent static electricity accumulation.

Maintenance precautions

Regularly check the sealing of the casing and remove dust or corrosive substances.

Test the trip function (recommended once a year).

Replace damaged explosion-proof surfaces or sealing rings.

Selection Recommendation

Clarify the environmental hazard level: Select the corresponding explosion-proof mark based on the type of gas/dust (such as methane IIA, hydrogen IIC).

Matching load characteristics: The motor load should choose a D-type trip curve, and the lighting circuit can choose a C-type.

Certification compliance: Confirm that the product has certifications such as CNEx (China), ATEX (EU), UL (North America), etc.