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OnBuy.com£12.75Visit shop Dorman Smith Miniature Circuit Breaker Mcb Single Pole Type B 10Ka 32A 4250327100518
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B&Q£15.64Visit shop - Dorman Smith K1Pb32 Miniature Circuit Breaker Mcb Sp Type B 10Ka 32 Amp
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This Dorman Smith Type B Miniature Circuit Breaker (MCB) is designed for residential and commercial electrical systems requiring reliable overcurrent protection. It offers a robust 10kA short-circuit rating and a 32 Amp capacity, safeguarding circuits against faults. A key benefit is its Type B tripping characteristic, suitable for protecting circuits with low inrush currents, though it may not be ideal for equipment with significant motor starts.
| Series | Type B |
|---|---|
| Model Part Number | K1PB32 |
| Brand | Dorman Smith |
A 'Type B' circuit breaker has a tripping characteristic that activates between 3 to 5 times its rated current. This makes it suitable for circuits with low inrush currents, like lighting and socket outlets, and offers protection against overloads and low-impedance faults.
The 10kA (kiloampere) rating signifies the maximum fault current the circuit breaker can safely interrupt without sustaining damage. A higher kA rating indicates greater protection capability in severe fault conditions.
Generally, a Type B breaker is not recommended for motor circuits due to their high inrush current during startup. A Type C or Type D breaker is usually more appropriate to prevent nuisance tripping. Always consult the motor manufacturer's recommendations.
The correct amperage rating depends on the total power (wattage or amperage) of the devices that will be connected to the circuit. It is crucial to calculate the maximum expected load and consult electrical codes or a qualified electrician to determine the appropriate breaker size.
This is a single-pole breaker, meaning it protects one live conductor in a circuit.
Please refer to the product packaging or the Dorman Smith official website for specific warranty information, as warranty periods can vary.
Verify that the connected load does not exceed the 32 Amp rating. Check for any damaged wiring or faulty appliances on the circuit that might be causing an overload or short circuit. If the issue persists, consult a qualified electrician.
This indicates a potentially serious issue. Do not use the circuit. Immediately contact a qualified electrician for diagnosis and repair, as the breaker may have failed internally or there may be a severe wiring fault.
This typically indicates a persistent short circuit on the line. Turn off all appliances on the circuit, reset the breaker. If it holds, turn appliances back on one by one until the breaker trips again to identify the faulty appliance. If it trips with nothing on, a wiring fault is likely; consult an electrician.
Setup: Installation of miniature circuit breakers should only be performed by a qualified electrician in accordance with local electrical codes and regulations. Ensure the power supply to the relevant circuit is completely isolated before attempting installation. The MCB typically mounts onto a standard DIN rail within an electrical distribution board.
Compatibility: This Dorman Smith MCB is designed to be compatible with standard DIN rail mounting systems. While generally compatible with other Type B MCBs, it is recommended to consult the specifications of your distribution board and any associated protective devices (like RCDs) to ensure full system compatibility. Always check the voltage and frequency ratings.
Care: To ensure the longevity and reliable operation of the circuit breaker, minimal care is required. Keep the electrical enclosure clean and free from dust and moisture. Periodically, a qualified electrician may inspect the connections and the breaker's mounting for security. Do not attempt to service or repair the unit yourself.
