Product Description: The FEDERAL PACIFIC QMQB4026 is a panel mount switch designed for heavy-duty electrical applications. It features a 1-phase, 2-pole configuration with a 600V rating and 400A capacity. This fusible switch has a NEMA 1 enclosure rating and a high AIC rating of 200kA@480V for reliable performance. Its single switch design is compatible with THED frames and multiple fuse classes.