Scope application

YJM1Z series DC molded case circuit breaker is a new type of circuit breaker developed using international advanced design and manufacturing technology. Its rated working voltage is DC750V and below, and its rated working current is up to 800A in circuits. Circuit breakers have short-circuit and overload protection functions to protect circuits and power equipment from damage.

Compliant with standards

IEC60947-1 GB14048.1 General Provisions

EC60947-2 GB14048.2 Low Voltage Circuit Breaker

IEC60947-4-2 GB14048.6 Contactors and Motor Starters

Model Meaning

Product Features

The YJM1Z series DC circuit breaker adopts the internationally pioneering patented arc extinguishing technology CCV, which is a quadruple acceleration and narrow gap breaking free arc extinguishing technology, making the arcing distance shorter and the breaking capacity higher. Small size, accurate short circuit delay, and complete specifications.

Normally, according to standard specifications, for the differential coordination of the battery pack power system, the calculation of short-circuit current can be simplified without considering parameters such as resistance, cable cross-sectional area, copper content, current limiting coefficient, and cable thermal stability. The upper and lower level circuit breakers only need to be selected according to the rated current level to achieve full selection of three-stage protection

Can reach international standards.

The YJM1Z series DC plastic case circuit breaker adopts the internationally advanced process of increasing hardness and anti-corrosion surface treatment, soft ammonification and matte electroplating, in terms of anti-corrosion performance, making the product's anti-corrosion performance higher than nickel plating and suitable for high protection level use.

Usage environment

Altitude of 2000m and below;

The temperature of the surrounding medium should not be lower than -5 ℃ and not higher than+40 ℃. If it is higher than 40 ℃, it can be used with reduced capacity;

Can withstand the influence of humid air;

Capable of withstanding the effects of salt spray and oil mist;

Can tolerate the influence of mold;

Can work reliably under normal ship vibration;

In a medium without explosive hazards, and where there are no gases or conductive dust that can corrode metals or damage insulation in the medium;

In a place without rain or snow invasion.

Main technical parameters

Note: DC750V needs to be customized.

Installation and overall dimensions