Both miniature circuit breakers and plastic case circuit breakers belong to circuit breakers, and their working principles are the same. The difference is that:

1. The installation mode of miniature circuit breaker is guideway installation, while the plastic case circuit breaker is screw installation.

2. The maximum current level of miniature circuit breaker is less than 63A, and the highest current level of plastic case circuit breaker is 2000A.

The following are the parameters of the miniature circuit breaker and the plastic case circuit breaker.

Electrical parameters of miniature circuit breaker:

A. Compliance with electrical standards: EN0898 (IEC898), GB10963;

B. Ue: 230/400V; 50/60Hz;

C. rated short circuit breaking capacity Icu: 10kA IEC898 (1-63A);

D. DC short circuit breaking capacity: maximum 48V (S-5SJ4... (10 kA) maximum 250V (S-5SJ4-DC, 6kA) monopole;

E, release characteristics: B, C, D characteristic curves;

F. Fuse with maximum edge: 100A gL (>10kA);

G, selectivity level: 3;

H, working environment temperature: - 5 to + 40 C;

I. Shell protection level: IP40 (after installation);

J. Life: Electricity, not less than 8000 on-off action machinery, not less than 2000 on-off action;

微型断路器

Mechanical parameters of miniature circuit breaker:

A. Outcrop length: 45 mm;

B. Shell height: 80mm;

C. Shell width: 17.5 mm per pole (unipolar);

D. Installation mode: IEC standard guideway 35mm;

E. Terminals: Dual-purpose terminals can connect bus and wire;

F, terminal connection capacity: busbar 1-25mm2; busbar thickness 0.8-2mm;

Plastic case circuit breaker is suitable for working environment:

A. Elevation below 2000m;

B. The ambient medium temperature should not be higher than + 40 C (for marine products, +45 C) or less than - 5 C.

C. It can withstand the influence of humid air.

D. It can tolerate the influence of salt fog and oil fog.

E. The maximum inclination is (+25.5 degree);

F. It can work reliably when it is subjected to normal vibration of ships.

G. It can work reliably under earthquake (4g);

H. In the medium without explosion danger, there is no place where the medium has enough gas and conductive dust to corrode the metal and destroy the insulation.

I. Where there is no rain or snow.

塑壳断路器

Mechanical parameters of miniature circuit breaker:

A. Outcrop length: 45 mm;

B. Shell height: 80mm;

C. Shell width: 17.5 mm per pole (unipolar);

D. Installation mode: IEC standard guideway 35mm;

E. Terminals: Dual-purpose terminals can connect bus and wire;

F, terminal connection capacity: busbar 1-25mm2; busbar thickness 0.8-2mm;

Plastic case circuit breaker is suitable for working environment:

A. Elevation below 2000m;

B. The ambient medium temperature should not be higher than + 40 C (for marine products, +45 C) or less than - 5 C.

C. It can withstand the influence of humid air.

D. It can tolerate the influence of salt fog and oil fog.

E. The maximum inclination is (+25.5 degree);

F. It can work reliably when it is subjected to normal vibration of ships.

G. It can work reliably under earthquake (4g);

H. In the medium without explosion danger, there is no place where the medium has enough gas and conductive dust to corrode the metal and destroy the insulation.

I. Where there is no rain or snow.