The number of electrical consumers continues to grow – and with them the load on electrical systems. In the event of overload or a short-circuit, MCBs safely cut the connected circuit and thus reliably protect electrical systems and devices. MCBs of the SENTRON portfolio are easy to assemble and install. The devices can be expanded to include more functions thanks to an wide range of accessories.
New demands on electrical systems
Overload and short-circuit currents can be caused by multiple electrical consumers operating simultaneously, exceeding the allowable current. They can occur suddenly due to incorrect operation or gradually due to age-related defects.
The risk of overload and short-circuit is particularly high in residential and commercial buildings, with the growing number of electrical devices posing new challenges. Decentralized power generation requires expanded protective measures, and preventive protection of industrial facilities against electrical faults and failures is essential, especially for increasingly automated operating procedures.
Miniature circuit breakers from the SENTRON portfolio
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 centers. 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. Our MCBs protect wires and cables in cases of short circuit and overloads, and also enable backup protection for switching devices and also semiconductor protection. They are therefore a fundamental component in end-to-end protection concepts for industry and infrastructure.
The right combination
The main purpose of miniature circuit breakers is to permanently monitor and secure cables and wires in electrical systems. They also help protect humans against electric shocks when used in combination with RCCBs or as combined RCBO. Combining the 5SY MCB with the 5SM6 arc-fault detection unit (AFDD) further expands the range of functions. An overview of all the combinations is provided below.