The Square D EDB34020 3P Circuit Breaker is a high-quality electrical component designed for industrial applications. With a maximum amperage of 20A and voltage of 480V, this Main Breaker features a bolt-on mounting style and a switch control style for easy operation. The black ABS/plastic material makes it suitable for interior use, and it is capable of handling up to 3 phases of current. This reliable and durable circuit breaker is ideal for ensuring the safety and efficiency of electrical circuits in industrial settings.