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What is a shunt trip breaker?
The shunt trip breaker is a combination of the shunt trip accessory and the main circuit breaker. This installs on the main breaker to add protection to your electrical system. This adds security to your electrical system as it manually or automatically cuts the electric supply in your circuit.
What trips a shunt trip breaker?
Shunt trip breakers essentially provide an off switch remotely or a direct link to a system outside the main breaker. Remote manual switches allow for human control while direct link automatically shuts off the breaker. For instance, when smoke triggers a smoke detector, the breaker trips automatically.
Where are shunt trip breakers required?
RE: when are shunt trip breakers required 1 (Safety Code for Elevators and Escalators) requires their use for the shutdown of the elevator motor(s) in elevator machine rooms protected by an automatic fire sprinkler system.
What is shunt trip used for?
Shunt trip circuit breakers shut off electrical power during emergencies to prevent injury to people and damage to equipment. The shunt trip–a safety feature added to a regular circuit breaker–allows a location or appliance outside of the main breaker to also trigger a power shut-off.
What is a shunt circuit?
In electronics, a shunt is a device that creates a low-resistance path for electric current, to allow it to pass around another point in the circuit. The origin of the term is in the verb ‘to shunt’ meaning to turn away or follow a different path.
What is the purpose of a shunt trip?
A shunt trip device is an optional accessory in a circuit breaker that mechanically trips the breaker when power is applied to the shunt trip terminals. The power for the shunt trip does not come from within the breaker, so it must be supplied from an external source.
How does a Shunt Trip Circuit Breaker work?
The shunt breaker is connected to the fire detector or alarm, so that when the alarm is triggered, the breaker is automatically tripped, cutting the power to any computers, electronic locks or other electrical equipment before the sprinklers can soak them in water.
What does a shunt fuse do?
Shunt fuse feeds the BSI power circuits so refitting it is waking the BSI and it WILL draw current you need to wait 3 mins with no power being requested for the BSI to shut down again then the drain will stop.