Low Voltage Circuit Protection

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First name:		Last name:
Company name:		E-Mail Address
City		State
Province (Optional)		Country (Optional)

The pictured image is a _________________ circuit breaker?

	Minature
	Molded Case
	Power (ACB)
	Medium Voltage

The function of the Trip Unit is to close the breaker, and reconnect the circuit in the event of a short circuit or prolonged overload of current.

	True
	False

If the ambient temperature of a circuit breaker falls below 40 degrees C, the breaker will carry _________ current.

	More
	Less
	The same
	Too much

The main difference between MCCB & Power Breaker standard is the ability to remain ________ longer during fault conditions.

	Connected
	Open
	Stable
	Closed

What is the main mounting method for residential circuit breakers?

	Cable-In/Cable-Out
	Plug-In
	Bolt-On
	Drawout

The function of the arc chute in a molded case circuit breaker is to ______ and ______ the arc.

	Release
	Divide
	Bend
	Confine

Of the two most common low voltage power circuit breaker mounting methods, the fixed mount is the most commonly used in the US because it is less expensive.

	True
	False

Miniature circuit breakers are used to switch and protect the lowest common distribution voltage in an electrical system

	True
	False

An _______________ is unwanted or intermittent flow of current between two conductors that can ignite nearby combustible material.

	Arc Fault
	Overcurrent fault
	Erratic fault
	Ground fault

In their enclosures, ACBs are rated at what percentage of their current rating?

	50
	85
	100
	25