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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

3000755

EC 1 12DC/2A S-C

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Electronic device circuit breaker

Electronic protection switch, ON/OFF control input, rated current: 2 A

Electronic circuit breaker, on/off control input, nominal current: 2 A

 		3 View Availability View Price

0914523

TMC 1 M1 100 10,0A

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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

2800907

CB E1 24DC/10A 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 protection switch, 1 pole, active current limiting, 1 closing contact, plug for base element.

 		3 View Availability View Price

0915001

TMC 2 M1 120 2,5A

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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

0914840

TMC 2 F1 120 4,0A

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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

0915823

TMCP 1 M1 300 8,0A

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Thermomagnetic device circuit breaker

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

Thermal-magnetic circuit breaker, 1-pos., normal blow, 1 N/O contact and 1 N/C contact

 		3 View Availability View Price

0914251

TMC 1 F1 200 1,0A

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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

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

0914772

TMC 2 F1 120 0,6A

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Protection breaker thermal magnetic, 2 pole, fast, 1 touch open and 1 closed contacts, with a foot universal for mounting on NS 32 or NS 35

 		3 View Availability View Price

0915797

TMCP 1 M1 300 4,0A

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Thermomagnetic device circuit breaker

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

 		3 View Availability View Price

0914154

TMC 1 F1 100 8,0A

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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: 8 A, fuse type: Automatic fuse, mounting class: Symmetrical rail: 35 mm

 		3 View Availability View Price

0914633

TMC 1 M1 200 2,0A

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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

0914057

TMC 1 F1 100 0,6A

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Switches, protection devices, thermal magnetic, Number of poles: 1, Type of connection: Connection by screw, Section: 0,2 mm2

Thermomagnetic device circuit breaker, number of positions: 1, connection method: Screw connection, cross section: 0.2 mm2- 6 mm2, AWG: 24 - 10, nominal current: 0.6 A, fuse type: Automatic device, mounting type: DIN rail: 35 mm

 		3 View Availability View Price

0914442

TMC 1 M1 100 1,5A

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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

0914578

TMC 1 M1 200 0,4A

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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

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

 		3 View Availability View Price

0914976

TMC 2 M1 120 1,0A

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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

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

0914329

TMC 1 F1 200 6,0A

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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

0915056

TMC 2 M1 120 8,0A

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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

0914280

TMC 1 F1 200 2,5A

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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

5043941

TMC 1 F1 200 0,1A

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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

 		3 View Availability View Price

0914743

TMC 2 F1 120 0,3A

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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

0914837

TMC 2 F1 120 3,0A

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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

0914167

TMC 1 F1 100 10,0A

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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: 10 A, fuse type: Automatic fuse, mounting class: Symmetrical rail: 35 mm

 		3 View Availability View Price

0914206

TMC 1 F1 200 0,3A

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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

 		3 View Availability View Price

2801616

CB RC BRIDGE

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Jumper

Bridge tab for bridging contacts 11 to 14 for CB base elements

Bridge plug for bridging contacts 11 to 14 for CB base elements

 		3 View Availability View Price

0914439

TMC 1 M1 100 1,0A

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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

0914727

TMC 1 M1 200 16,0A

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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

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

 		3 View Availability View Price

0914455

TMC 1 M1 100 2,0A

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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

0915496

TMC 3 M1 122 3,0A 500V

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Protection breaker thermal magnetic, 3 pole, semilento, 1 open contact and 2 contacts closed, with a foot universal for mounting on NS 32 or NS 35

 		3 View Availability View Price

0914390

TMC 1 M1 100 0,4A

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

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

 		3 View Availability View Price

0914646

TMC 1 M1 200 2,5A

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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

 		3 View Availability View Price

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