Increase Safety with Low-Voltage Circuit Breakers from Schneider Electric

Masterpact Circuit Breaker Solutions for Low-Voltage Switchgear
There are two low-voltage circuit breaker upgrade solutions that are cost effective and will expand the capabilities of the electrical system. These state-of-the art circuit breakers provide solid state protection, reduce the potential for an arc flash event and do not require maintenance under normal operating conditions. Designs are available for most manufacturers’ low-voltage switchboards and switchgear.

Direct Replacement
A standard Masterpact cradle is installed into an adapter cradle to form one assembly, which is then installed into the switchgear cubicle. (This cradle-in-cradle assembly locks into place and will remain in the switchgear cell after the initial installation.) The new Masterpact circuit breaker racks in and out of the adapter cradle. A new door is installed featuring a through-the-door display, however cell interlocks, the racking mechanism, and the switchgear structure are not modified. Designs are available for most manufacturers’ switchgear.

Low-Voltage Retrofill
This solution provides a Masterpact cradle and circuit breaker, along with a new racking mechanism and primary and secondary connections in each switchgear cell. Existing cells are modified to accept the new cradle and circuit breaker, including a custom engineered connection between the cradle and the switchgear line and load side bus. Custom designs are available for most brands of low-voltage switchgear.

 

Extending the Life of Switchgear White Paper

The most obvious benefit of upgrading existing electrical switchgear is the significant savings on costs that would have been dedicated to buying new equipment — and not just the physical equipment, but the time and labor involved in specification, procurement, installation, testing and commissioning. A direct replacement or retrofill solution is a viable, cost-effective alternative to purchasing new equipment. In addition, the upgrade can be performed without major downtime and possible loss of production.