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Over Current Protection

Over current protection devices are critical components in any electrical installation, designed to automatically interrupt the flow of current when it exceeds a predetermined safe level. These devices, commonly known as circuit breakers, fuses, or protective relays, safeguard conductors, equipment, and personnel from the damaging effects of ove...

Over current protection devices are critical components in any electrical installation, designed to automatically interrupt the flow of current when it exceeds a predetermined safe level. These devices, commonly known as circuit breakers, fuses, or protective relays, safeguard conductors, equipment, and personnel from the damaging effects of overloads and short circuits. Key technical parameters include rated current (In), breaking capacity (Icu/Ics), number of poles (1P, 2P, 3P, 4P), trip curves (B, C, D, K, Z), and rated voltage (Ue). They are available in various form factors, from miniature circuit breakers (MCBs) for branch circuits to molded case circuit breakers (MCCBs) and air circuit breakers (ACBs) for main distribution, each offering specific protection characteristics and coordination capabilities.

These devices are deployed across a wide spectrum of industrial, commercial, and residential applications. In industrial automation, they protect motor control centers (MCCs), variable frequency drives (VFDs), and programmable logic controllers (PLCs) from overcurrent events. In power distribution networks, they are installed in main switchboards, sub-distribution boards, and final distribution boards to ensure selective coordination and fault isolation. They are also essential in renewable energy systems, such as photovoltaic arrays and wind turbines, where they protect inverters and battery banks. Common installation environments include electrical rooms, manufacturing plants, data centers, and building management systems.

Our category includes a comprehensive range of overcurrent protection products. Key subcategories include miniature circuit breakers (MCBs) like the S200 series, molded case circuit breakers (MCCBs) such as the Tmax series, and air circuit breakers (ACBs) like the Emax series. We also offer high-speed DC breakers for traction and industrial applications, as well as electronic overcurrent relays for motor protection. Typical article codes follow a structured format: for example, an MCB might be coded as 'S201-C16' indicating a single-pole, 16A, curve C device, while an MCCB might be 'T5S 400' indicating a 400A frame size. These codes help identify key specifications like pole count, rated current, and trip characteristics.

Partnering with Electric Automation Network ensures you receive genuine, certified overcurrent protection devices with full technical documentation and real-time pricing. Our engineering team provides expert support for device selection, coordination studies, and compliance with international standards like IEC 60947-2 and UL 489. We offer express worldwide shipping, ensuring critical components arrive when needed. Whether you need a single MCB for a panel upgrade or a full suite of ACBs for a new substation, we deliver the technical expertise and logistics to keep your operations safe and reliable.

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Manufacturer Code Reference Catalog Number Description Delivery Price

2800913

CB E1 24DC/8A S-R P

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Electronic device circuit breaker

Interruption. Protec. Electronic, 1-pole, active current limiter, status output and reset input, connector for base element.

 		3 View Availability View Price

2800914

CB E1 24DC/10A S-R P

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Electronic device circuit breaker

Interruption. Protec. Electronic, 1-pole, active current limiter, status output and reset input, connector for base element.

 		3 View Availability View Price

2800927

CB E1 24DC/8A S-C P

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Electronic device circuit breaker

Interruption. Protec. Electronic, 1 pole, active current limiter, status output and control input, connector for base element.

 		3 View Availability View Price

2800928

CB E1 24DC/10A S-C P

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Electronic device circuit breaker

Interruption. Protec. Electronic, 1 pole, active current limiter, status output and control input, connector for base element.

 		3 View Availability View Price

2801305

CB 1/10-1/10 UT-BE

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Base element

Base element with screw connection technology for CB apparatus protection switch ...

 		3 View Availability View Price

2801481

CBB TM 04 2X2RC P-PT

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Potential distributors

Apparatus protection switch panels for four thermomagnetic protection switches CB TM1... with collective remote indication, central power and potential distribution for up to five consumers per channel.

 		3 View Availability View Price

2801482

CBB TM 08 2X4RC P-PT

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Potential distributors

Appliance protection switch panels for eight CB TM1 thermomagnetic protection switches... with collective remote indication, central power and potential distribution for up to five consumers per channel.

 		3 View Availability View Price

2801483

CBB TM 12 2X6RC P-PT

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Potential distributors

Apparatus protection switch panels for twelve CB TM1 thermomagnetic protection switches... with collective remote indication, central power and potential distribution for up to five consumers per channel.

 		3 View Availability View Price

2905067

CB S-BE

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Base element

Basic soldering element for PCB mounting for housing CB TM device protection switches... or CB E...

Solder base element for PCB mounting for accommodating CB TM... or CB E... device circuit breakers

 		3 View Availability View Price

2905238

CBB 04 2X2RC-PT

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Potential distributors

Equipment protection switch plates for four circuit breakers (CB TM1...) or electronic (CB E1... NO) with collective remote indication, central power supply, connection for relay contacts and potential distribution for up to four consumers per channel.

 		3 View Availability View Price

2905240

CBB 08 2X4RC-PT

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Potential distributors

Equipment protection switch plates for eight circuit breakers (CB TM1...) or electronic (CB E1... NO) with collective remote indication, central power supply, connection for relay contacts and potential distribution for up to four consumers per channel.

Equipment protection switch plates for eight circuit breakers (CB TM1...) or electronic (CB E1... NO) with collective remote indication, central power supply, connection for relay contacts and potential distribution for up to four consumers per channel.

 		3 View Availability View Price

2905241

CBB 12 2X6RC-PT

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Potential distributors

Equipment protection switch plates for twelve circuit breakers (CB TM1...) or electronic circuit breakers (CB E1... NO) with collective remote indication, central power supply, connection for relay contacts and potential distribution for up to four consumers per channel.

Equipment protection switch plates for twelve circuit breakers (CB TM1...) or electronic circuit breakers (CB E1... NO) with collective remote indication, central power supply, connection for relay contacts and potential distribution for up to four consumers per channel.

 		3 View Availability View Price

2905743

CBM E4 24DC/0.5-10A NO-R

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Electronic device circuit breaker

Multi-channel electronic device protection switch with active current limitation to protect four consumers in 24 V DC in case of overload and short circuit. With assist for rated current and electronic locking of the set rated currents. For installation on DIN rails.

 		3 View Availability View Price

2905744

CBM E8 24DC/0.5-10A NO-R

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Electronic device circuit breaker

Multi-channel electronic equipment protection switch with active current limitation to protect eight consumers in 24 V DC in case of overload and short circuit. With assist for rated current and electronic locking of the set rated currents. For installation on DIN rails.

 		3 View Availability View Price

2905799

CB E1 24DC/1A SI-R P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905800

CB E1 24DC/2A SI-R P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905801

CB E1 24DC/3A SI-R P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905802

CB E1 24DC/4A SI-R P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905803

CB E1 24DC/6A SI-R P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905804

CB E1 24DC/8A SI-R P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905805

CB E1 24DC/10A SI-R P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905806

CB E1 24DC/1A SI-C P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic device protection switch, 1-pole, active current limiting, inverted state output and command input, connector for base element.

 		3 View Availability View Price

2905807

CB E1 24DC/2A SI-C P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905808

CB E1 24DC/3A SI-C P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905809

CB E1 24DC/4A SI-C P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905810

CB E1 24DC/6A SI-C P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2905811

CB E1 24DC/8A SI-C P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic device protection switch, 1-pole, active current limiting, inverted state output and command input, connector for base element.

 		3 View Availability View Price

2905812

CB E1 24DC/10A SI-C P

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Electronic device circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

Electronic circuit breaker, 1-pos., active current limitation, inverted status output and control input, plug for base element.

 		3 View Availability View Price

2908262

PTCB E1 24DC/1-8A NO

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Electronic device circuit breaker

1-channel electronic switch for equipment protection to protect consumers in 24 V DC in case of overload and short circuit. Easy potential distribution with the components of the CLIPLINE complete terminal block system. With electronic locking of the set rated currents. For installation on DIN rails.

 		3 View Availability View Price

2909870

18PLUS-AM02-00-PT01-01

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Base element

Base element to house TMCP line protection switches... and ECP...

Base element for accommodating circuit breakers from the TMCP... and ECP... range

 		3 View Availability View Price

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