The so-called circuit breaker refers toCircuit protection devices are essential for ensuring the safety of electrical or electronic equipment and individuals. Any electrical or electronic device that ignores circuit protection design产品All of them conceal faults and safety hazards. Protecting your expensive equipment and the safety of your life and property ultimately means protecting the entire electrical system, including control switches, wires, electronic devices, and power supplies, to avoid short circuits and current overload situations.

thatVoltage resistance of circuit breakersWhat do parameters refer to? How to find the information you need in the vast array of information?

Let's explore together with FAE from Weikewei and decipher what the DC withstand voltage of circuit breakers refers to?

Taking the BA series hydraulic electromagnetic circuit breaker as an example:

The main parameters are as follows:

1. Compliant with standards: IEC60934, GB17701, UL489A_JUL1077,UL489

2. Rated working voltage: DC80V AC1 20/240V、AC240/415V、AC250V、AC277/480YV

3. Mechanical/electrical lifespan: 10000/6000 cycles, (electrical lifespan of UL489A products: 1000 cycles)

4. Rated insulation voltage: AC415V; Rated impulse withstand voltage: 2500V

5. Certified by CCC, CE JUV ,UL1077,UL489A ,UL489

6. Auxiliary contact parameters: AC250V5A

7. Rated breaking capacity

Literally speaking, there is no defined parameter for DC withstand voltage. What we refer to as withstand voltage is generally defined by the rated operating voltage in the circuit breaker industry, rather than DC withstand voltage. The index corresponding to the working voltage is determined by different certification and specification requirements, and the experimental indicators vary depending on the standards/certification content. We often see that this type of circuit breaker determines the corresponding operating voltage based on the model of the circuit breaker ordered by the customer.

Circuit breaker is a current sensitive product, such as the BA series hydraulic circuit breaker. DC 80V is the maximum rated working voltage. If the voltage is lower than this, the circuit breaker can work normally. If the working environment is higher than this voltage, it will have a significant impact on the breaking capacity and electrical life of the circuit breaker.

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