Miniature circuit breakers usually protect the power supply line in buildings or systems. They are only used at low voltages in domestic, light-industrial or commercial applications. Miniature circuit-breakers tend to be single-phase devices and have a typical rated load current range of up to 100 amps (A) with a maximum short-circuit rating of 16kA at 240 volts (V).
In general Miniature circuit breakers are used in the same applications as semi-enclosed or cartridge fuses and offer an alternative for protecting radial or ring circuits.
CBI designs and manufactures Miniature Circuit Breakers that employ hydraulic-magnetic, electronic and thermal-magnetic technologies for the protection of installations and equipment against overload and short circuit.
DC Miniature Circuit breakers
We stock a comprehensive range of DC Miniature Circuit Breakers (MCBs) as well as a range of Accessories suitable for providing protection for any DC system. With this DC portfolio of products CBI holds a strong position internationally as an equipment protection supplier to the Telecommunications, Rail and Solar industries.
- AC branch circuit protection (SANS 60947 - 2)
- Telecom / Datacom equipment
- Lighting control
- UPS equipment
- Alternative energy equipment
- Mobile power generation equipment
- Railway signalling equipment
- Residential & Industrial equipment