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JZB1 Series
Miniature Circuit Breaker

JZB1 Series Miniature Circuit Breaker


JZB1 Series Miniature Circuit Breakers are suitable for circuits with rated working voltage of 400VAC (50Hz) and rated current of 125A.  JZB1 series circuit breakers are mainly used for lighting and power distribution in industrial, commercial, residential and other buildings.

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Basic Parameters

Rated working voltage: 230VAC, 400VAC(1P); 400VAC(2P, 3P, 4P)

Rated insulation voltage: 500V

Rated impulse withstand voltage: 4KV

Rated current: 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A, 125A

Rated short-circuit capacity: H-10KA; Default-6KA

Operation short-circuit capability: H-7.5KA; Default-6KA

Number of poles: 1P; 2P; 3P; 4P

Instantaneous trip type: C,D

Grid distance: 45mm

Application Environment

Altitude: ≤2000m

Air pollution level: Level Ⅱ

Installation category: Class Ⅰ

Ingress Protection Ratings of Shell: IP20

DIN-rail specification: TH35-75 steel mounting DIN rail

Ambient temperature: -5℃~+40℃, the average value of 24h does not exceed +35℃. If the circuit breaker works in an environment where the temperature is higher than +40°C or lower than -5°C, please contact us.

Installation site: no significant shaking, impact and vibration, and the vertical inclination of the circuit breaker should not exceed 5°, the external magnetic field of the installation site should not exceed 5 times the geomagnetic field in any direction.

Relative humidity: monthly average ≤90% (the average temperature of the month is +25℃); relative humidity ≤50% (when the ambient temperature is +40℃). The relative humidity is related to the ambient temperature. The lower the ambient temperature, the higher the allowable relative humidity. For condensation caused by temperature changes, take appropriate protective measures (such as adding drainage holes).

* If you need to customize according to your special needs, please contact us.

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