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The number of electrical consumers continues to grow – and along with them the load on electrical systems.
In the event of overload or a short-circuit, miniature circuit breakers safely cut the connected circuit and thus reliably protect electrical systems and devices against damage.
MCBs in the SENTRON portfolio are easy to assemble and install. The devices feature a uniform design and can be expanded to include many more functions thanks to an extensive range of accessories.
More than half of all fires are triggered by electrical equipment. Without appropriate measures in place to protect against overloads or short circuits, cables can overheat and cause substantial losses: fire, system downtimes or costly damage to electrical devices and machines.
International standards and installation requirements have good reason for insisting on the use of appropriate devices to automatically cut power to affected circuits or system components if a fault occurs.
Overload currents can occur, for example, when several electrical consumers are used simultaneously in the same circuit and exceed the maximum permissible current level.
Short circuits, on the other hand, are conductive connections caused by errors, e.g. between phase and neutral conductor.
Short circuits and overload currents can occur quite suddenly, for example, as a result of incorrect operation during switching, assembly errors or cases of higher forces, such as lightning strikes, earthquakes or flood disasters.
It’s far more common, however, for them to occur gradually, as a result of age-related faults in cable insulation, plug connections or broken cables.
The risk of overload and short circuit is particularly high in residential and functional buildings, where the installed electrical systems and equipment are not subject to regular inspection.
The growing number of electrical devices also contributes to the problem: an average household today uses much more than 50 electrical devices, compared to less than eight previously.
The same applies to industrial environments: just a few seconds without power is enough to bring production lines to a standstill, disrupt automation systems or compromise entire production batches.
Preventive protection of industrial systems against electrical faults and downtimes is therefore essential, especially with the increasing use of automated operating processes.
MCBs from the SENTRON portfolio meet the enhanced requirements of automated buildings and industrial power supply systems, e.g. in the automotive and semiconductor industry or in data centres.
Compared to residential and functional buildings, these are usually more extensive and complex in terms of both network topology and operation.
Electricity and production downtimes must be deliberately prevented in these cases using coordinated device combinations if economic losses are to be avoided.
Siemens MCBs protect wires and cables in cases of short circuit and overloads and enable backup protection for switching devices and semiconductor protection.
They are therefore a fundamental component in end-to-end protection concepts for industry and infrastructure.