How can we use DC Molded Case Circuit Breakers?

Compact circuit breakers have the advantages of various protective functions (overload, short circuit, under-voltage protection, etc.), adjustable trigger value, high circuit breaker switching power, convenient operation and safety, so they are widely used at present. Next, let's take a closer look at the relevant knowledge about DC Molded Case Circuit Breakers!

What is the meaning of overload protection of DC Molded Case Circuit Breakers?

What are the operating characteristics of the DC Molded Case Circuit Breaker?

What are the uses of DC Molded Case Circuit Breakers in daily life?

What is the meaning of overload protection of DC Molded Case Circuit Breakers?

The DC Molded Case Circuit Breaker provides overload protection with temperature-sensitive elements. The assembly is essentially a bimetal contact: a contact consisting of two metals that expand at different speeds when exposed to high temperatures. Under normal operating conditions, the bimetal contacts allow current to flow through the DC Molded Case Circuit Breaker. When the current exceeds the trigger value, the bimetal contacts begin to heat and bend due to the different thermal expansion rates within the contacts. Finally, the contacts bend to the point where they physically press the release lever and unlock the contacts, breaking the circuit.

The thermal protection of the DC Molded Case Circuit Breaker usually has a time delay to take into account short-term overcurrents common in certain device operations, such as inrush currents that occur when starting a motor. This time delay allows the circuit to continue operating under these conditions without triggering the DC Molded Case Circuit Breaker.

What are the operating characteristics of the DC Molded Case Circuit Breaker?

1. DC Molded Case Circuit Breaker drive mechanism has quick-close and quick-disconnect functions

2. The installation of movable and static contacts in the contact arc extinguishing system of DC Molded Case Circuit Breakeres is based on the principle of parallel conductors. The H-shaped static contacts can be repelled, which is conducive to rapid interruption at high current, and the dynamic and static contacts elements made of highly arc resistant materials are installed around the head, which is conducive to rapid arc termination;

3. The DC Molded Case Circuit Breaker is compact and small

4. Thermomagnetic, leakage current, DC and intelligent DC circuit breaker uniform dimensions

5. The accessories of DC Molded Case Circuit Breaker are independent installation units. Users only need to open the accessory cover to install and replace the accessories.

6. Mechanical and electrical interlocks can be installed between the two circuit breakers of the DC Molded Case Circuit Breaker;

7. No arc or short arc of DC Molded Case Circuit Breaker, safe and reliable operation

8. DC Molded Case Circuit Breaker is easy to operate and can be installed by user on site

9. The maintenance-free life of DC Molded Case Circuit Breaker reaches 10,000 times, including 3,000 times electrical life and 7,000 times mechanical life.

What are the uses of DC Molded Case Circuit Breakers in daily life?

1. Direct current supply:

DC Molded Case Circuit Breaker is widely used in communication power supply, EPS, UPS and other DC power supplies in information industry

2. Rail transport and electric locomotives:

Currently, the urban rail transport system is operated with direct current. The DC Molded Case Circuit Breaker for fast analysis is an important component in rail transport.

3. Ships:

DC Molded Case Circuit Breaker is one of the very important components in ship power supply system and electric propulsion system. It protects the failure of the power distribution system and electrical equipment to ensure the safety of the ship's power supply system and electrical equipment.

After reading these words, do you have an interest to order a DC Molded Case Circuit Breaker? If necessary, you can contact Zhejiang Shilong Electric Technology Co., Ltd.