The Eaton QBHW3030H is a 30 amp, 240 volt, 3-phase bolt-on circuit breaker designed for industrial applications. It features thermal overload protection and is made of ABS/plastic material with a black color. This supplementary protector operates with an on/off switch control style and is suitable for both interior and exterior use. The QBHW model by Eaton offers reliable current protection with its 3 poles and maximum amperage of 30A, making it a durable and efficient choice for electrical systems requiring up to 250V.