Electronic circuit breakers
Device circuit breakers
Device circuit breakers protect your equipment against overload and short-circuit currents and selectively shut down just the affected circuit in the event of a fault. To provide the ideal protection, our circuit breakers use various technologies: electronic, thermomagnetic, and thermal. Optimize your production process and minimize downtimes by using our overcurrent protection.
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Your advantages
- High system availability with selective protection
- Reliable protection of your devices – targeted shutdown in the event of an error
- Versatile use with various tripping mechanisms and low nominal current levels
- Solutions for many applications with the comprehensive product range
New products
Electronic and thermomagnetic device circuit breakers
Various circuit breaker technologies
Based on their function, circuit breakers can be divided into the following groups:
- Thermal circuit breakers for overload protection
- Thermomagnetic circuit breakers for overload and short-circuit protection
- Electronic circuit breakers for protection in the event of overload, short circuit, cable attenuation, and high input capacitance
Targeted shutdown
Circuit breakers usually provide individual protection for equipment. In the event of an error, they shut down only the affected actuator or sensor in the faulty circuit.
This means that the production process continues running without interruption.
Based on their function, circuit breakers can be divided into the following groups:
- Thermal circuit breakers for overload protection
- Thermomagnetic circuit breakers for overload and short-circuit protection
- Electronic circuit breakers for protection in the event of overload, short circuit, cable attenuation, and high input capacitance
| Tripping time in the event of overload | Tripping time in the event of a short circuit | Your application is optimally protected in the event of | |
|---|---|---|---|
| Thermal circuit breakers | Suitable | Unsuitable | Overload |
| Thermomagnetic circuit breakers | Suitable | Ideal | Overload, short circuit and long cable paths (thanks to SFB tripping characteristic) |
| Electronic circuit breakers | Ideal | Ideal | Overload, short circuit and long cable paths (thanks to active current limitation) |
Further information about device circuit breakers in our e-paper
You will find more information about our device circuit breakers in digital form here. Take a look at the e-paper or download our brochures as PDF files.
PTCB – narrow, single-channel circuit breaker measuring just 6 mm
Miniature circuit breakers or device circuit breakers
Here is a brief explanation of the difference between miniature circuit breakers and device circuit breakers:
Miniature circuit breakers protect power distribution cables in buildings or systems. To protect the power supply line against overload, they safely shut down only in the event of a short circuit in the end device.
In contrast, device circuit breakers are the effective protection stage for end devices and protect against short circuit and overload. They can be optimally adapted to loads. For this reason, their nominal currents start at less than 1 A and they are subdivided into small current increments. If you protect individual loads or small function groups individually, unaffected system parts can continue operating in the event of an error, as long as the overall process allows this.