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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

1464485

PTCB E1 24DC/0.63A SI-R

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Protection of single-channel electronic equipment for consumers of 12-24 V DC. Fixed rated current value: 0.63 A. With remote signal, remote reset and active current limiting. Can be combined with CLIPLINE rail terminals. For installation on DIN rails.

Electronic Appliance Protection Switches

Single-channel electronic device protection for 12-24 V DC consumers. Fixed current rating: 0.63 A With remote signaling, remote reset and active current limiting. Can be combined with CLIPLINE terminal blocks. For installation on DIN rails.

 		3 View Availability View Price

1441495

PTCB E1 24DC/0.1-0.63A NO

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Protection of single-channel electronic equipment for consumers of 12-24 V DC. Adjustable current rating from 0.1-0.63 A. With remote signal and active current limiting. Can be combined with CLIPLINE rail terminals. For installation on DIN rails.

Electronic Appliance Protection Switches

Single-channel, electronic device protection for 12-24 V DC loads. Nominal current adjustable from 0.1-0.63 A. With remote signaling and active current limitation. Can be combined with CLIPLINE terminal blocks. For installation on DIN rails.

 		3 View Availability View Price

1464483

PTCB E1 24DC/0.1A SI-R

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Protection of single-channel electronic equipment for consumers of 12-24 V DC. Fixed rated current value: 0.1 A. With remote signal, remote reset and active current limiting. Can be combined with CLIPLINE rail terminals. For installation on DIN rails.

Electronic Appliance Protection Switches

Single-channel, electronic device protection for 12-24 V DC loads. Fixed nominal current value: 0.1 A. With remote signaling, remote reset, and active current limitation. Can be combined with CLIPLINE terminal blocks. For installation on DIN rails.

 		3 View Availability View Price

1344363

CAPAROC PM S-R EX

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Power module with status output and reset input for the power supply of the switch system for protection of CAPAROC equipment with 12 or 24 V DC. EX e approval for zone 2. To be installed on DIN rails using CAPAROC busbars.

Power module

Power module with status output and reset input for supplying the CAPAROC circuit breaker system with 12 V DC or 24 V DC. EX e approval for zone 2. For DIN rail installation via the CAPAROC current rails.

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1361043

PTCB E1 24DC/0.5A SI-R

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Protection of single-channel electronic equipment for consumers of 12-24 V DC. Fixed rated current value: 0.5 A. With remote signal, remote reset and active current limiting. Can be combined with CLIPLINE rail terminals. For installation on DIN rails.

Electronic Appliance Protection Switches

Protection of single-channel electronic equipment for 12-24 V DC consumers. Fixed current rating: 0.5 A. With remote signal, remote reset and active current limiting. Can be combined with CLIPLINE rail terminal blocks. For installation on DIN rails.

 		3 View Availability View Price

1538622

TCP 5A

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Single-channel thermal switch for equipment protection, to protect consumers at 250 V AC/72 V DC in case of overload. For installation in fuse terminal blocks and interfaces for flat insertable fuse of Form C according to ISO 8820-3. With fixed rated current: 5 A

Thermal appliance protection switches, number of poles: 1, fuse type: Slow, fuse type: Automatic fuse, mounting type: on base element

Thermal miniature circuit breaker, pluggable in screw-type fuse terminal block UK 6-FSI/C and spring-cage fuse terminal block ST 4-FSI/C

 		3 View Availability View Price

1464484

PTCB E1 24DC/0.1A NO

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Protection of single-channel electronic equipment for consumers of 12-24 V DC. Fixed rated current value: 0.1 A. With remote signal and active current limiting. Can be combined with CLIPLINE rail terminals. For installation on DIN rails.

Electronic Appliance Protection Switches

Single-channel, electronic device protection for 12-24 V DC loads. Fixed nominal current value: 0.1 A. With remote signaling and active current limitation. Can be combined with CLIPLINE terminal blocks. For installation on DIN rails.

 		3 View Availability View Price

1441496

PTCB E1 24DC/0.1-0.63A SI-R

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Protection of single-channel electronic equipment for consumers of 12-24 V DC. Adjustable current rating from 0.1-0.63 A. With remote signal, remote reset and active current limiting. Can be combined with CLIPLINE rail terminals. For installation on DIN rails.

Electronic Appliance Protection Switches

Single-channel, electronic device protection for 12-24 V DC loads. Nominal current adjustable from 0.1-0.63 A. With remote signaling, remote reset, and active current limitation. Can be combined with CLIPLINE terminal blocks. For installation on DIN rails.

 		3 View Availability View Price

1388391

PTCB E1 24DC/1-8A NO2

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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. The warning contact opens when the channel is disconnected due to a fault or manually. For installation on DIN rails.

1-channel electronic equipment protection switch to protect consumers on 24 V DC in case of overload and short circuit. Easy potential distribution with the components of the CLIPLINE complete rail terminal system. With electronic locking of the set nominal currents. The warning contact is opened when the channel is switched off due to a fault or manually. For installation on DIN rails.

1-channel, electronic circuit breaker for protecting loads at 24 V DC against overload and short circuit. Easy potential distribution with components from the CLIPLINE complete terminal block system. With electronic interlock of the set nominal currents. The signal contact opens if the channel has been switched off manually or due to a fault. For installation on DIN rails.

 		3 View Availability View Price

1538627

TCP 10/12A

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Single-channel thermal switch for equipment protection, to protect consumers at 250 V AC/72 V DC in case of overload. For installation in fuse terminal blocks and interfaces for flat insertable fuse of Form C according to ISO 8820-3. With fixed rated current: 12 A

Thermal circuit breaker, plug-in terminal for push-in fuse PT 10-FSI/C.

Thermal miniature circuit breaker, can be plugged into PT 10-FSI/C Push-in fuse terminal block.

 		3 View Availability View Price

1361049

PTCB E1 24DC/0.2A SI-R

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Protection of single-channel electronic equipment for consumers of 12-24 V DC. Fixed rated current value: 0.2 A. With remote signal, remote reset and active current limiting. Can be combined with CLIPLINE rail terminals. For installation on DIN rails.

Electronic Appliance Protection Switches

Single-channel, electronic device protection for 12-24 V DC loads. Fixed nominal current value: 0.2 A. With remote signaling, remote reset, and active current limitation. Can be combined with CLIPLINE terminal blocks. For installation on DIN rails.

 		3 View Availability View Price

1361051

PTCB E1 24DC/0.5A NO

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Protection of single-channel electronic equipment for consumers of 12-24 V DC. Fixed rated current value: 0.5 A. With remote signal and active current limiting. Can be combined with CLIPLINE rail terminals. For installation on DIN rails.

Electronic Appliance Protection Switches

Single-channel, electronic device protection for 12-24 V DC loads. Fixed nominal current value: 0.5 A. With remote signaling and active current limitation. Can be combined with CLIPLINE terminal blocks. For installation on DIN rails.

 		3 View Availability View Price

1344361

CAPAROC E2 12-24DC/1-4A EX

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2-channel electronic switch module for equipment protection to protect consumers in 12 and 24 V DC in case of overload and short circuit. Nominal current adjustable by step switch from 1 A to 4 A. EX e approval for zone 2. To be installed on DIN rails using CAPAROC busbars.

Electronic Appliance Protection Switches

2-channel electronic circuit breaker module for protecting 12 V DC and 24 V DC loads against overload and short circuit. Nominal current adjustable from 1 A to 4 A via step switch. EX e approval for zone 2. For DIN rail installation via the CAPAROC current rails.

 		3 View Availability View Price

1344364

CAPAROC E2 12-24DC/2-10A EX

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2-channel electronic switch module for equipment protection to protect consumers in 12 and 24 V DC in case of overload and short circuit. Nominal current adjustable by step switch from 2 A to 10 A. EX e approval for zone 2. To be installed on DIN rails using CAPAROC busbars.

Electronic Appliance Protection Switches

2-channel electronic circuit breaker module for protecting 12 V DC and 24 V DC loads against overload and short circuit. Nominal current adjustable from 2 A to 10 A via step switch. EX e approval for zone 2. For DIN rail installation via the CAPAROC current rails.

 		3 View Availability View Price

2909902

PTCB E1 24DC/1A NO

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Single-channel electronic circuit breaker for protecting 24 V DC loads against overload and short circuit. Simple potential distribution using components from the CLIPLINE complete terminal block system. With fixed nominal current. For installation on DIN rails.

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 protecting 24 V DC loads against overload and short circuit. Simple potential distribution using components from the CLIPLINE complete terminal block system. With fixed nominal current. For installation on DIN rails.

 		3 View Availability View Price

2909910

PTCB E1 24DC/8A NO

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Single-channel electronic circuit breaker for protecting 24 V DC loads against overload and short circuit. Simple potential distribution using components from the CLIPLINE complete terminal block system. With fixed nominal current. For installation on DIN rails.

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 protecting 24 V DC loads against overload and short circuit. Simple potential distribution using components from the CLIPLINE complete terminal block system. With fixed nominal current. For installation on DIN rails.

 		3 View Availability View Price

1115415

CAPAROC E1 12-24DC/1-4A

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1-channel electronic switch module for equipment protection to protect consumers in 12 and 24 V DC in case of overload and short circuit. Nominal current adjustable by LED push button from 1 A to 4 A. To be installed on the DIN rail using the CAPAROC busbars.

Electronic switch module for protection of 1-channel equipment to protect consumers in 12 and 24 V DC in case of overload and short circuit. Adjustable rated current via LED push button from 1 A to 4 A. To install on the DIN rail using CAPAROC busbars.

 		3 View Availability View Price

1115649

CAPAROC E1 12-24DC/1-10A

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Electronic switch module for protection of 1-channel equipment to protect consumers in 12 and 24 V DC in case of overload and short circuit. Adjustable rated current via LED push button from 1 A to 10 A. To install on the DIN rail using CAPAROC busbars.

Electronic switch module for protection of 1-channel equipment to protect consumers in 12 and 24 V DC in case of overload and short circuit. Adjustable rated current via LED push button from 1 A to 10 A. To install on the DIN rail using CAPAROC busbars.

 		3 View Availability View Price

1115670

CAPAROC PM IOL

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Power supply module with IO-Link interface for the supply of the switch system for the protection of CAPAROC equipment with 12 or 24 V DC for up to 20 channels. To be installed on the DIN rail using the CAPAROC busbars.

Power module

 		3 View Availability View Price

1157279

CAPAROC E1 12-24DC/8A

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1-channel electronic switch module for equipment protection to protect consumers in 12 and 24 V DC in case of overload and short circuit. With fixed rated current. To be installed on the DIN rail using the CAPAROC busbars.

Electronic switch module for protection of 1-channel equipment to protect consumers in 12 and 24 V DC in case of overload and short circuit. With fixed rated current. To install on the DIN rail using the CAPAROC busbars.

 		3 View Availability View Price

1157284

CAPAROC E1 12-24DC/10A

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1-channel electronic switch module for equipment protection to protect consumers in 12 and 24 V DC in case of overload and short circuit. With fixed rated current. To be installed on the DIN rail using the CAPAROC busbars.

Electronic switch module for protection of 1-channel equipment to protect consumers in 12 and 24 V DC in case of overload and short circuit. With fixed rated current. To install on the DIN rail using the CAPAROC busbars.

 		3 View Availability View Price

1157286

CAPAROC E1 12-24DC/6A

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1-channel electronic switch module for equipment protection to protect consumers in 12 and 24 V DC in case of overload and short circuit. With fixed rated current. To be installed on the DIN rail using the CAPAROC busbars.

Electronic switch module for protection of 1-channel equipment to protect consumers in 12 and 24 V DC in case of overload and short circuit. With fixed rated current. To install on the DIN rail using the CAPAROC busbars.

 		3 View Availability View Price

1157288

CAPAROC E1 12-24DC/1A

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1-channel electronic switch module for equipment protection to protect consumers in 12 and 24 V DC in case of overload and short circuit. With fixed rated current. To be installed on the DIN rail using the CAPAROC busbars.

Electronic switch module for protection of 1-channel equipment to protect consumers in 12 and 24 V DC in case of overload and short circuit. With fixed rated current. To install on the DIN rail using the CAPAROC busbars.

 		3 View Availability View Price

2909904

PTCB E1 24DC/3A 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.

 		3 View Availability View Price

2909908

PTCB E1 24DC/6A 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.

 		3 View Availability View Price

2908261

PTCB E1 24DC/1-4A 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

0914183

TMC 1 F1 100 16,0A

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Thermomagnetic device circuit breaker

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

Thermal-magnetic protection switch, 1-pole, quick, with 1 closing contact, with universal foot for mounting on NS 32 or NS 35

 		3 View Availability View Price

0914604

TMC 1 M1 200 0,8A

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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

0914060

TMC 1 F1 100 0,8A

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

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

 		3 View Availability View Price

0914921

TMC 2 M1 120 0,3A

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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

 		3 View Availability View Price

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