Bolted Pressure Switch Vs Circuit Breaker

They open and close easily and conduct high current with greater efficiency than knife spring or butt contact devices.

Bolted pressure switch vs circuit breaker.

Masterpact circuit breakers provide. Eaton s pringle bolted pressure contact switches are available for switchboard applications both new and existing. It turned out the old circuit breaker was not a breaker at all but rather was a 2000 amp bolted pressure switch. The main horizontal bus feeding the risers for the circuit breakers was partially buried in foundry sand.

Bolted pressure contact switches. Eaton s pringle bolted pressure contact switches are fused power circuit devices ideal for high current applications. When a short circuit or an overload is detected an electromagnet turns the circuit breaker off automatically. Today s units are often rated to conduct currents up to several thousand amps and to switch these loads on and off safely.

Now it s arcwatch enabled to provide a better arc flash hazard mitigation solution. The new generation hpc switch is based on the time proven platform of the power break ii circuit breaker. Service entrance fused power circuit devices integral ground fault open type double throw manual transfer. The bolted pressure switch also known as the bolted pressure contact switch was developed in the 1950 s to reliably control the massive current loads encountered in these applications.

A masterpact nw low voltage circuit breaker is retrofilled into the switch compartment of the old bolted pressure switch. Integral ground fault protection for equipment. Bolted pressure switches can be found in the switchboard. It runs automatically with high pressure being put on the blade when the switch is closed.

The only things that have to be done manually for a bolted pressure switch are maintenance and testing. The retrofill design includes the associated draw out mechanism doors wiring metering bussing fasteners and hinges. Similar to a fuse a circuit breaker is used to protect the electrical system of a particular house or building. The high pressure contact hpc switch has been demonstrated to be a superior switching device when compared to bolted pressure switches due to the exceptional contact design.

When maintenance needs to be performed on the circuit or connected equipment the circuit breaker can be manually turned off. Switch vs circuit breaker. They re ul 977 listed 100 rated and utilize class l fuses. The electrical circuit is broken when pressure is applied to the bolted pressure switch.

The product line includes quick action qa charge before close cbc and fault protector fp open designs along with nema 12 enclosed pringle mill switches pms. Switches are custom built and used in many heavy duty applications. Manufacturer of ul listed load break fusible switches 30 4000 amps.