Login  Register
  Optifuse for your fuse needs...

    PART NUMBER Search:
Become An OptiFuse Distributor
Become An OptiFuse Rep
Join the Optifuse Team
About OptiFuse Selection Guide Glossary of Terms Privacy Statement Site Map Contact OptiFuse
September 2, 2009
Line Voltage Circuit Breakers

The regular readers of the OptiFuse Daily Blog know that I have fun at the expense of big fuse manufacturers, Bussmann and Littelfuse.  In today’s edition, I hope to poke fun at two other big name players, Tyco and Carlingswitch (now called Carling Technologies).as I discuss OptiFuse’s Thermal Line Voltage Circuit Breakers.

So first of all...what is a Thermal Line Voltage Circuit Breaker anyway?  Well...the name says it all...

A "thermal" circuit breaker is designed for overload protection only (in order to protect against high short circuits, the circuit breaker also needs to be a magnetic type as well as a thermal type). 


                    CBW57 Series

Sometimes thermal circuit breakers are called supplementary protectors or thermal protectors.  Thermal circuit breakers MUST be used in conjunction with an upstream fuse or thermal-magnetic circuit breaker that provides short-circuit protection to the circuit.

The "Line Voltage" part of the name means that these circuit breakers operate at 125 VAC or 250 VAC (or below).  This is what differentiates them from automotive type circuit breakers (which are generally rated at 24 VDC)

The current ratings range from 1.5A to 80A (although the UL Listed / CSA Certified products only go as high as 30A)


                    CBW28 Series

The fact that these circuit breakers are intended for "line voltage" makes them perfect for several applications where the end-product is plugged into utility power and/or has high current AC or DC requirements.  These applications include:

  • Vending Machines
  • Industrial Controls
  • Factory Automation
  • Telecom
  • Automotive, Buses and Motor Homes
  • Appliances and White Goods


                    CBW58 Series

Each of the OptiFuse Thermal Line Voltage Circuit Breakers are manually resettable and are available with a variety of options such as button color, bushing type, mounting hardware, and terminal configurations.

These circuit breakers are UL Listed and CSA Certified.

This is a good opportunity to save some serious money for you or your customers!

Thank you once again for your continued support of OptiFuse as we try to expand your horizons...

Jim Kalb

Home  |  Cross-Ref List   |  Products  |  Contact Us