Circuit Breakers
MCBs, MCCBs, earth leakage, surge protectors, isolators, motor protection and kilowatt meters.
954 products
Prices include VAT, are indicative and subject to change — confirm via a quote. E&OE.
CBI Asc Astute Smart Controller
Smart Wi-FiCBI Asc Astute Smart Controller is a smart-home or sensor device from CBI. Helps automate lighting, security and energy use.
CBI EC320CD 1 Pole + N DIN Rail Kilowatt Meter
Kilowatt MetersCBI EC320CD 1 Pole + N DIN Rail Kilowatt Meter is an energy meter from CBI. Used to track power use in homes, buildings and solar systems.
CBI EC320CM 1 Pole + N Samite Kilowatt Meter
Kilowatt MetersCBI EC320CM 1 Pole + N Samite Kilowatt Meter is an energy meter from CBI. Measures electrical consumption for billing, monitoring and energy management.
CBI EC330CD 3 Pole + N DIN Rail Kilowatt Meter
Kilowatt MetersCBI EC330CD 3 Pole + N DIN Rail Kilowatt Meter is an energy meter from CBI. DIN-rail mounted for installation in distribution boards.
CBI EC330CM 3 Pole + N Kilowatt Meter
Kilowatt MetersCBI EC330CM 3 Pole + N Kilowatt Meter is an energy meter from CBI. Used to track power use in homes, buildings and solar systems.
CBI ISR2121 Intuitive Single Phase Smart Meter
Kilowatt MetersCBI ISR2121 Intuitive Single Phase Smart Meter is a smart-home or sensor device from CBI. Adds automation and remote control to homes and businesses.
CBI ISR4321 Intuitive Three Phase Smart Meter
Kilowatt MetersCBI ISR4321 Intuitive Three Phase Smart Meter is a smart-home or sensor device from CBI. Works with compatible smart-home apps and hubs.
CBI QA-1 1 Pole 3kA 10Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 10Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 10A. Protects circuits against overcurrent and short circuit…
CBI QA-1 1 Pole 3kA 15Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 15Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 15A. Provides overload and short-circuit protection and is D…
CBI QA-1 1 Pole 3kA 20Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 20Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 20A. Used in domestic, commercial and industrial distributio…
CBI QA-1 1 Pole 3kA 25Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 25Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 25A. Protects circuits against overcurrent and short circuit…
CBI QA-1 1 Pole 3kA 30Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 30Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 30A. Provides overload and short-circuit protection and is D…
CBI QA-1 1 Pole 3kA 35Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 35Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 35A. Used in domestic, commercial and industrial distributio…
CBI QA-1 1 Pole 3kA 40Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 40Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 40A. Protects circuits against overcurrent and short circuit…
CBI QA-1 1 Pole 3kA 45Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 45Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 45A. Provides overload and short-circuit protection and is D…
CBI QA-1 1 Pole 3kA 50Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 50Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 50A. Used in domestic, commercial and industrial distributio…
CBI QA-1 1 Pole 3kA 5Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 5Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 5A. Protects circuits against overcurrent and short circuits.
CBI QA-1 1 Pole 3kA 60Amp Circuit Breaker
Regular Circuit BreakersCBI QA-1 1 Pole 3kA 60Amp Circuit Breaker is a circuit breaker from CBI. Key details: 1 pole, 3kA, 60A. Provides overload and short-circuit protection and is D…
CBI QA-2 2 Pole 3kA 10Amp Circuit Breaker
Regular Circuit BreakersCBI QA-2 2 Pole 3kA 10Amp Circuit Breaker is a circuit breaker from CBI. Key details: 2 pole, 3kA, 10A. Used in domestic, commercial and industrial distributio…
CBI QA-2 2 Pole 3kA 15Amp Circuit Breaker
Regular Circuit BreakersCBI QA-2 2 Pole 3kA 15Amp Circuit Breaker is a circuit breaker from CBI. Key details: 2 pole, 3kA, 15A. Protects circuits against overcurrent and short circuit…
CBI QA-2 2 Pole 3kA 20Amp Circuit Breaker
Regular Circuit BreakersCBI QA-2 2 Pole 3kA 20Amp Circuit Breaker is a circuit breaker from CBI. Key details: 2 pole, 3kA, 20A. Provides overload and short-circuit protection and is D…
CBI QA-2 2 Pole 3kA 40Amp Circuit Breaker
Regular Circuit BreakersCBI QA-2 2 Pole 3kA 40Amp Circuit Breaker is a circuit breaker from CBI. Key details: 2 pole, 3kA, 40A. Used in domestic, commercial and industrial distributio…
CBI QA-2 2 Pole 3kA 50Amp Circuit Breaker
Regular Circuit BreakersCBI QA-2 2 Pole 3kA 50Amp Circuit Breaker is a circuit breaker from CBI. Key details: 2 pole, 3kA, 50A. Protects circuits against overcurrent and short circuit…
CBI QA-2 2 Pole 3kA 5Amp Circuit Breaker
Regular Circuit BreakersCBI QA-2 2 Pole 3kA 5Amp Circuit Breaker is a circuit breaker from CBI. Key details: 2 pole, 3kA, 5A. Provides overload and short-circuit protection and is DIN…
About Circuit breakers and protection
This category covers miniature circuit breakers (MCBs), moulded case breakers (MCCBs), earth leakage units, surge protectors, isolators, contactors, overload relays, timers and energy meters from brands such as Schneider, Hager, Chint, CBI and Onesto.
Protection devices must suit the circuit they guard. Our branch teams can help you match pole count, amp rating and breaking capacity to your distribution board.
Buying tips
- Choose the breaker amp rating to match the cable size and load it protects.
- The kA rating shows the fault current the breaker can safely interrupt.
- Add earth leakage and surge protection to protect people and equipment.