BG MCB 20A SP Type B - BG CUMB16

Protect your electrical goods from damage caused by overload or short circuit with this 20A MCB (m...

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Product Information

Full details

This guide provides essential information for users of the BG MCB 20A SP Type B (BG CUMB16), a miniature circuit breaker designed to protect electrical circuits. Ideal for both domestic and commercial applications, it safeguards against overloads and short circuits. Keep in mind that this MCB is designed for use with standard 35 mm DIN rails.

All features

Model Part Number	CUMB16
Brand	BG

Extended Product Information

FAQs

What does 'SP' in the product name mean?

SP stands for Single Pole, indicating that this MCB protects only one live wire.

What is the breaking capacity?

The breaking capacity is 6 kA, which means the MCB can safely interrupt a fault current of up to 6,000 Amperes.

What type of circuits is this MCB suitable for?

It is suitable for circuits that do not generate surge currents, such as lighting circuits.

How do I reset the MCB after it trips?

Simply switch the dolly reset mechanism back to the 'on' position.

What kind of warranty does it have?

It comes with a 10-year warranty against faulty materials and workmanship.

Where can I install this MCB?

This MCB is designed to be installed in a standard consumer unit with a 35 mm DIN rail.

What should I do if the MCB keeps tripping?

If the MCB keeps tripping, there may be a fault in the circuit. You should check the connected appliances or wiring, and consult a qualified electrician if the problem persists.

What standards does this MCB comply with?

It is manufactured and tested in accordance with EN/IEC 60898 standards.

Troubleshooting

The MCB trips frequently.

This could indicate an overload or a short circuit in the connected circuit. Check the connected appliances for faults or consult a qualified electrician to inspect the wiring.

The MCB does not turn on.

Check the power supply to the consumer unit and ensure that the MCB is properly connected to the circuit. If the MCB is faulty, replace it.

The MCB feels warm to the touch.

Some warmth is normal under load, but excessive heat indicates a problem. Check the load on the circuit and ensure all connections are secure. If the problem persists, consult a qualified electrician.

Pros and Cons

Pros

Protects electrical circuits from overloads and short circuits.
Easy installation due to its DIN rail mounting and large terminal capacity.
Durable design with a 6 kA breaking capacity for handling electrical surges.
Backed by a 10-year warranty, ensuring reliability.
Suitable for a range of applications, including lighting circuits.

Cons

Not suitable for appliances that generate high inrush currents.
Requires a standard 35 mm DIN rail for installation.
May require professional installation depending on the user's electrical knowledge.
Limited to a single-pole configuration.

Setup, Compatibility & Care

Installation: Ensure the power supply is off before installation. Mount the MCB onto a standard 35 mm DIN rail within the consumer unit. Connect the wires to the terminals, ensuring a secure connection.
Compatibility: This MCB is compatible with standard consumer units that accept 35 mm DIN rail-mounted devices. It is suitable for circuits that do not generate high inrush currents.
Care: Regularly inspect the MCB for any signs of damage or wear. Avoid exposing it to moisture or extreme temperatures.
Resetting: In the event of a trip, switch the dolly back to the on position to restore power. If the MCB trips repeatedly, there may be an underlying fault in the circuit that needs to be addressed by a qualified electrician.