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Device circuit breaker

Device circuit breakers, also known as miniature circuit breakers (MCBs) or supplementary protectors, are compact overcurrent protection devices designed for branch circuits and sensitive equipment. These devices typically feature a thermal-magnetic trip mechanism, with rated currents from 0.5A to 63A, breaking capacities up to 10kA, and voltage...

Device circuit breakers, also known as miniature circuit breakers (MCBs) or supplementary protectors, are compact overcurrent protection devices designed for branch circuits and sensitive equipment. These devices typically feature a thermal-magnetic trip mechanism, with rated currents from 0.5A to 63A, breaking capacities up to 10kA, and voltage ratings of 240/415V AC or 48-80V DC. They are available in 1P, 1P+N, 2P, 3P, and 4P configurations, with trip characteristics B, C, D, and K for different load types. Unlike standard MCBs, device circuit breakers are specifically optimized for protecting control circuits, instrumentation, and electronic loads in industrial environments.

These circuit breakers are primarily installed in control panels, distribution boards, and automation cabinets within industrial facilities, commercial buildings, and infrastructure projects. Common applications include protection of PLC power supplies, motor control centers (MCCs), HVAC systems, lighting circuits, and process instrumentation loops. They are also widely used in renewable energy systems, such as photovoltaic arrays and wind turbine control units, where DC-rated versions are essential. In the telecommunications sector, they safeguard rectifiers and battery backup systems.

Key subcategories include thermal-magnetic MCBs, hydraulic-magnetic breakers, and electronic trip units. Popular article codes follow patterns like S201-B16 (ABB System pro M compact), 5SY4116-7 (Siemens Sentron), or FAZ-B16/1 (Eaton Moeller). These codes typically encode the series, number of poles, trip characteristic, and rated current. For example, in the ABB S200 series, S201-B16 indicates a 1P, 16A, B-curve breaker. Other common series include Schneider Electric Acti9 iC60N, Legrand DX³, and Hager MCN.

Our platform offers real-time pricing and express worldwide shipping for all device circuit breaker series. Each product listing includes detailed technical datasheets, wiring diagrams, and certification documents (IEC/EN 60898, UL 1077). Our team of electrical engineers provides personalized support for selecting the correct trip curve and breaking capacity for your specific application, ensuring compliance with local regulations and optimal system protection.

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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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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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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

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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

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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

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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

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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

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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

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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

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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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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

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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

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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

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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

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0914769

TMC 2 F1 120 0,5A

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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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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

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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

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0914028

TMC 1 F1 100 0,3A

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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: 0.3 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: 0.3 A, fuse type: Automatic device, mounting type: DIN rail: 35 mm

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