CHS Controls Fuses products

CHS Controls – The fuse specialists!

  • We help you with selection and sizing.
  • We assist with cross references between fuses from different manufacturers.
  • We have the fuse.

Fuses components that protects most electrical circuits. One of the most important for electrical safety. A component that does not always receive the attention it deserves. But - when required – it must work with 100% reliability. It is a fact that is in focus for us - the right fuse for the right application provides reliable protection!

A sustainable development - means among other higher energy efficiency, which also affects the fuses. Modern fuses have lower power losses resulting in savings. But increased efficiency of other components also affects the fuses. More energy efficient transformers and cables may result in higher short-circuit currents, energy-efficient motors have slightly higher starting current - factors that influence the sizing of the fuse. Installation of the adjustable frequency drives will reduce energy consumption but the drive should also be protected - often with high speed fuses. Renewable energy - such as solar and wind – sets new demands for effective protection.

When the job is done -  it shall be replaced - with a fuse of right size and type. There is a great variety of fuses, manufactured according to many international standards and to protect different types of equipment. Two fuses can, at the first glance, look similar but the electrical characteristics may be quite different - wrong replacement fuse may result in a disaster.


High speed fuses – Superior protection for batteries

How to protect critical battery storage systems?

The answer is – with high speed fuses.


Compared to AC circuits, the absence of natural voltage zero in a DC circuit makes it more difficult for a fuse to interrupt the current at fault. Battery protection is a specific area of DC applications with special requirements. Compared to the operational current is the prospective short circuit current relatively low, however it should be interrupted in less than 5 s. Longer interrupting time may result in overheating and damage the batteries.

Another factor to concern is the voltage level, larger battery storage system normally operates at higher voltages, up to 700 VDC.

Upgrading the standard gG fuses to a high speed gR fuses offers improved protection. The fuses can be used at higher DC voltages compared to gG fuses.

We will help you to select the proper fuse for your application.

Just tell us:

- Operating voltage

- Max operating current and operating time

- Short circuit current, depending on battery type, stated in the manufacturer’s data sheet