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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

2909906

PTCB E1 24DC/4A NO

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Electronic device circuit breaker

Electronic switch for protection of single-channel equipment 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 fixed rated current. For installation on DIN rails.

Single-channel electronic circuit breaker for the protection of 24 V DC consumers in the event of overload and short circuit. Simple potential distribution with the components of the CLIPLINE complete terminal block system. With fixed rated current. For installation on DIN rails.

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2906031

CBMC E4 24DC/1-4A NO

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Electronic device circuit breaker

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

Multi-channel electronic circuit breaker for protecting four loads at 24 V DC in the event of overload and short circuit. With electronic locking of the set nominal currents. For installation on DIN rails.

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2910411

CBMC E4 24DC/1-10A IOL

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Electronic device circuit breaker

Multi-channel electronic equipment protection switch with IO-Link interface to protect four consumers in 24 V DC in case of overload and short circuit. With electronic locking of the set rated currents. For installation on DIN rails.

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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

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2909869

18PLUS-EM02-00-PT01-01

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Base element

Power Module for 18PLUS-AM02... to power the system

Power Module for 18PLUS-AM02... to power the system

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0915027

TMC 2 M1 120 4,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 2-pole, semi-flat, 1 open contact and 1 closed contacts, with universal foot for mounting on NS 32 or NS 35

Thermomagnetic protection switch, 2-pole, semi-flat, 1 open contact and 1 closed contacts, with universal foot for mounting on NS 32 or NS 35

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0914866

TMC 2 F1 120 6,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 2-pole, fast, 1 open contact and 1 closed contacts, with universal foot for mounting on NS 32 or NS 35

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0914138

TMC 1 F1 100 5,0A

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Thermomagnetic device circuit breaker

Protection switches for thermomagnetic devices, number of poles: 1, connection type: Screw connection, cross-section: 0.2 mm²- 6 mm², AWG: 24 - 10, rated current: 5 A, fuse type: Automatic fuse, mounting class: Symmetrical rail: 35 mm

Thermomagnetic device circuit breaker, number of positions: 1, connection method: Screw connection, cross section: 0.2 mm2- 6 mm2, AWG: 24 - 10, nominal current: 5 A, fuse type: Automatic device, mounting type: DIN rail: 35 mm

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0914235

TMC 1 F1 200 0,6A

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Protection breaker thermal magnetic, 1 pole, fast, 1 contact closed, with a foot universal for mounting on NS 32 or NS 35

Thermal-magnetic circuit breaker, 1-pos., fast blow, 1 N/C contact, with universal foot for mounting on NS 32 or NS 35

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0914581

TMC 1 M1 200 0,5A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 1 pole, semi-flat, 1 closed contact, with universal foot for mounting on NS 32 or NS 35

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0914798

TMC 2 F1 120 1,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 2-pole, fast, 1 open contact and 1 closed contacts, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

0914617

TMC 1 M1 200 1,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 1 pole, semi-flat, 1 closed contact, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

0914073

TMC 1 F1 100 1,0A

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Thermomagnetic device circuit breaker

Protection switches for thermomagnetic devices, number of poles: 1, connection type: Screw connection, cross-section: 0.2 mm²- 6 mm², AWG: 24 - 10, rated current: 1 A, fuse type: Automatic fuse, mounting class: Symmetrical rail: 35 mm

Thermomagnetic device circuit breaker, number of positions: 1, connection method: Screw connection, cross section: 0.2 mm2- 6 mm2, AWG: 24 - 10, nominal current: 1 A, fuse type: Automatic device, mounting type: DIN rail: 35 mm

 		3 View Availability View Price

0914510

TMC 1 M1 100 8,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 1-pole, semi-flat, 1 open contact, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

0914468

TMC 1 M1 100 2,5A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 1-pole, semi-flat, 1 open contact, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

0914345

TMC 1 F1 200 10,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 1 pole, fast, 1 closed contact, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

0914691

TMC 1 M1 200 8,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 1 pole, semi-flat, 1 closed contact, with universal foot for mounting on NS 32 or NS 35

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0712107

TCP 0,1A

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Thermal device circuit breaker

Plug-in thermal switch on terminal for UK 6-FSI/C screw connection fuse and ST 4-FSI/C fuse spring terminal

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0915072

TMC 2 M1 120 12,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 2-pole, semi-flat, 1 open contact and 1 closed contacts, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

2800906

CB E1 24DC/8A NO P

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Electronic device circuit breaker

Interruption. Protec. Electronic, 1 pole, active current limiter, 1 NO contact, connector for base element.

Electronic circuit breaker, 1-pole, active current limiter, 1 normally open contact, plug for base element.

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3000765

EC 1 12DC/6A S-R

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Electronic device circuit breaker

Electronic protection switch, reset input and status output, rated current: 6 A

Electronic circuit breaker, reset input and status output, nominal current: 6 A

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3000766

EC 1 12DC/10A S-R

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Electronic device circuit breaker

Electronic protection switch, reset input and status output, rated current: 10 A

Electronic protection switch, reset input and status output, current rating: 10 A

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3000761

EC 1 12DC/2A S-R

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Electronic device circuit breaker

Electronic protection switch, reset input and status output, rated current: 2 A

Electronic circuit breaker, reset input and status output, nominal current: 2 A

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3000760

EC 1 12DC/1A S-R

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Electronic device circuit breaker

Electronic protection switch, reset input and status output, rated current: 1 A

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3000763

EC 1 12DC/4A S-R

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Electronic device circuit breaker

Electronic protection switch, reset input and status output, rated current: 4 A

Electronic circuit breaker, reset input and status output, nominal current: 4 A

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0914552

TMC 1 M1 200 0,2A

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Switch protection thermal-magnetic, 1-pole, semilento, 1 closed contact, with a foot universal for mounting on NS 32 or NS 35

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0914950

TMC 2 M1 120 0,6A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 2-pole, semi-flat, 1 open contact and 1 closed contacts, with universal foot for mounting on NS 32 or NS 35

Thermal-magnetic circuit breaker, 2-pos., normal blow, 1 N/O contact and 1 N/C contact, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

0914853

TMC 2 F1 120 5,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 2-pole, fast, 1 open contact and 1 closed contacts, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

0915810

TMCP 1 M1 300 6,0A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 1-pole, semi-flat, 1 open contact and 1 closed contact

Thermomagnetic circuit breaker, 1-pole, medium inert, 1 NO and 1 NC

 		3 View Availability View Price

0914264

TMC 1 F1 200 1,5A

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Thermomagnetic device circuit breaker

Thermomagnetic protection switch, 1 pole, fast, 1 closed contact, with universal foot for mounting on NS 32 or NS 35

Thermal-magnetic circuit breaker, 1-pos., fast blow, 1 N/C contact, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

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