STB1-63 Miniature Circuit Breaker

Main functions of STB1-63 Miniature Circuit Breaker

1.Overload protection: When the current in the circuit exceeds the rated value of the MCB, the STB1-63 Miniature Circuit Breakerwill automatically cut off the circuit within a set period of time to prevent the circuit and equipment from overheating.

2.Short-circuit protection: When a short-circuit occurs in the circuit, the STB1-63 Miniature Circuit Breakerwill cut off the circuit immediately to prevent the short-circuit current from damaging the circuit and equipment.

3.Leakage protection (some MCBs have this function): for MCBs with leakage protection, when there is leakage in the circuit, the STB1-63 Miniature Circuit Breakerwill quickly cut off the circuit to protect personal safety.

Principle of operation of MCBs

MCBs usually contain a thermal magnetic or electronic trip detector inside, which is used to detect changes in the current in the circuit. When the current is abnormal, the striker triggers the tripping mechanism of the MCB, causing the STB1-63 Miniature Circuit Breakerto quickly cut off the circuit.

1.Thermal magnetic striker: It utilizes the heat generated when the current passes through the conductor to trigger the tripping. When the current is too large, the conductor heats up, causing the bimetal inside the thermal magnetic striker to bend, thus triggering the tripping mechanism.

2.Electronic striker: It utilizes electronic components to detect current changes and control the action of the tripping mechanism. When an abnormal current is detected, the electronic striker sends a signal to the tripping mechanism to cut off the circuit.

Application Scenarios of MCB

MCBs are widely used in electrical systems in residential, commercial and industrial areas to protect circuits and equipment from damage caused by abnormal currents. They are usually installed in distribution boxes, switchboards or control cabinets and are used as the main switch or branch switch of a circuit.

Selection and Installation of MCBs

1.Selection: When selecting MCBs, you need to consider factors such as the rated current of the circuit, voltage level, protection characteristics, and whether leakage protection is required. It is also important to ensure that the selected STB1-63 Miniature Circuit Breakercomplies with local electrical safety standards and regulations.

2.Installation: The STB1-63 Miniature Circuit Breakershould be installed in a dry, ventilated environment free of corrosive gases and ensure that it is wired correctly and securely. During installation, relevant electrical safety regulations and operating procedures should be observed.