ABB Electrification THHQB2190 Q line circuit breakers are one-inch wide per pole, compact, thermal-magnetic devices…

These are 4/1 Line Miniature Circuit Breakers, specifically the bolt-on versions of the 4/1 Line.

They are designed for residential and commercial applications and are used for bolting to the bus connections of load centers and lighting panels.

They feature Quick make, Quick break mechanisms, common trip bars, and easy-to-spot trip indication for safety and reliability.

The circuit breakers are available in 1, 2, and 3 pole versions.

They can be ordered with auxiliary contact and shunt trip accessories.

The amperage rating for this circuit breaker is 100 A.

The system voltage is 480Y/277 VAC.

The interrupting rating at 480 VAC is 25 kAIC.

The interrupting rating at 277 VAC is 25 kAIC.

Yes, these circuit breakers are suitable for reverse feed.

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