The Siemens Sentron HED43B090 is a 90A, 480V 3-Pole Molded Case Circuit Breaker designed for indoor use. With a bolt-on mounting style and on/off operation method, this circuit breaker is suitable for a variety of electrical setups. Made of ABS/plastic material, it is capable of instantaneous break time and is rated for currents up to 90A. With 3 phases and 1-10 circuits, this circuit breaker is a reliable choice for industrial and commercial applications requiring efficient electrical protection.