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JBTM1 MCCB Moulded Case Circuit Breaker


JBTM 1 series plastic enclosure circuit breakers are suitable for AC 50 Hz, rated operating voltage 690 V and below, rated insulation voltage 1000V and with rated operating current to 800 A. It is used to distribute electrical energy and protect the overload and short circuit of the line, and can also be used as infrequent conversion of the line and the infrequent start of the motor, and is also suitable for fire fighting occasions. The circuit breaker has overload, short circuit and undervoltage protection functions, which can effectively protect the line and power equipment from damage.


Applicable Environment

· Altitude not exceeding 2000m

· The ambient temperature is not higher than + 40 °C (for marine products, + 45 °C) and not lower than - 5 °C;

· The ambient relative humidity shall not exceed 50% when the maximum temperature is +40°C, and it can have higher relative humidity at lower temperature;

· The maximum inclination is +22.5°C;

· It can work reliably under the normal vibration of the ship;

· Reliable operation under earthquake (Level 4);

· In the medium without explosion hazard, and the medium is not enough to corrode the metal and destroy the insulating gas and conductive dust;

· Applicable where there is no rain or fog;

· Pollution level: Level 3;

· Installation category:Ⅲ


Applicable Standard

IEC 60947-1

IEC 60947-2


Model Explanation

Product Categories

Based on the number of poles of the product, it is divided into: two pole (125A), three poles, four poles;

Based on the rated current, it is divided into:

JBTM1-63: 16A、20A、 25A、32A、 40A、 50A、 63A ;

JBTM1-125 16A、20A、 25A、32A、40A、50A、 63A、80A、100A、 125A ;

JBTM1-250: 100A、125A、160A、180A、 200A、225A、 250A ;

JBTM1-400: 225A、250A、315A、350A、 400A ;

JBTM1-630: 400A、500A、630A ;

JBTM1-800为: 630A、700A、800A ;