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Here are some tips on using a miniature circuit breaker (MCB):
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Install the MCB in a panel or enclosure close to the circuit it is protecting. Follow manufacturer guidelines for mounting and connections.
 Make sure the MCB amp rating matches the size of the circuit wire it is protecting. An MCB should be rated for the ampere of the circuit.
 Connect the incoming live wire to the line side terminal on the MCB and the outgoing hot wire to the load side terminal. The neutral wire connects through unchanged.
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Miniature circuit breakers are designed for quick make and break operation. To turn on, fully push the handle to the on position until it clicks. To turn off, flip the handle to the off position in one motion.
 Do not partially close an MCB or use it as a switch. The contacts are designed to open/close quickly. Leave it fully on or off.
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<img style="display: block; margin-left: auto; margin-right: auto;" src="https://first-fish.oss-us-west-1.aliyuncs.com/file/157/circuit-breaker-box.jpg" alt="Circuit Breaker Box" width="525" height="390">
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MCBs have a trip indicator that shows if they have tripped. Reset a tripped MCB by flipping the handle off and back on once the fault is cleared.
 Observe tripping during testing and use. Frequent tripping indicates a wiring fault or overload that should be corrected.
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Choose MCBs with magnetic and thermal tripping for overload and short circuit protection. The trip curves should coordinate with other circuit protection.
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Allow proper clearances around the <a style="color: rgb(53, 152, 219);" href="https://csqelectric.com/products/miniature-circuit-breaker-mcb">miniature circuit breaker (MCB) </a>for ventilation and maintenance access. Don't obstruct access to the handle.
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Regularly exercise the MCB handle to ensure smooth operation. Lubricate any sticking points as needed.
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Comply with all applicable electrical codes for MCB installation and circuit protection requirements.

How Do You Use A Miniature Circuit Breaker

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