The Siemens 250A Circuit Breaker is a high-quality, 3-pole, thermal magnetic breaker designed for commercial, electrical wiring, and home/garden applications. With a maximum amperage of 250A and a voltage rating of 551-600V, this DIN rail-mounted main breaker features a switch control style and instantaneous trip characteristics. The black-colored breaker, suitable for interior use, comes in a pack of 1 and is ideal for reliable on/off operation of electrical circuits in a variety of settings.