FUSE PROTECTION

Fuse solutions: definite advantages over circuit breakers

SOCOMEC has always promoted the benefits of fuses for both personal and equipment safety. Fuse protection offers lots of benefits compared to circuit breakers in a large number of applications.

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Fuse switches provide a guarantee of reliable breaking and protection from power distribution to motor protection.

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• SIGNIFICANT LIMITATION OF SHORT CIRCUITS

  The thermal and mechanical effects generated during a short circuit can be considerable. The speed at which a fuse can cut out means it offers a much greater limitation of the short circuit current than provided by circuit breaker technology.

 

• SIMPLIFIED DISCRIMINATION

  Fuses allow total discrimination, regardless of the short circuit level. This is ensured as soon as the ratio of ratings between the upstream and downstream fuse is at least 1:6. This characteristic guarantees perfect continuity of the energy supplied.
   

• HIGH BREAKING CAPACITY

  Fuses have a breaking capacity of 100 kA  (or more); it is therefore not necessary to worry too much about the short circuit current when choosing the product which has the right characteristics.

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• VISIBLE BREAKING

  When eliminating a short circuit, the energy generated is absorbed by the silica and remains confined in the body of the fuse, stopping the propagation of the arc or even the projection of white-hot materials.

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• VISIBLE DOUBLE BREAKING

  Breaker switches ensure breaking upstream and downstream of the fuses which allows them to be replaced in complete safety.

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FUSE COMBINATION SWITCHES

Fuse load break switches

Load break switches are devices used to open an electrical circuit by isolating the source from the consumer.

Whether they are manual, motorized or with a trip function, these devices ensure the on-load making, breaking and safety disconnection of low-voltage electrical circuits. 

​Easy to assemble and easy to use, they are suitable for structures evolving in the industrial sector, public distribution, as well as emergency switching, distribution panels and motor feeders. 

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MODULAR FUSE HOLDERS

RM and RMS are modular fuse disconnect switches for cylindrical fuses. They provide safety disconnection and protection against overloads and short-circuits in any low voltage electrical circuit.

RM: fuse disconnect switches without signalisation (for fuses without striker).

RMS: fuse disconnect switches with pre-break, position signalisation and blown indication auxiliary contact.

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FUSE BASE

SOCOMEC fuse bases are unipolar or multipolar supports for knife-edge fuses.

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INDUSTRIAL FUSES

Fuses are safety devices that allow the current to be interrupted whenever the current is too high. Two types of fuses are offered by SOCOMEC:

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• Industrial fuses: they protect persons and low-voltage electrical installations against overloads;

• High-speed fuses: they protect power semiconductors and DC circuits against overloads.

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PHOTOVOLTAIC APPLICATION

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