The Square D QMB365W ser E1 400A 400 amp fusible panelboard switch 600Vac 250Vdc is a sensor/switch from Square D. It detects a change in state, position, or presence and relays that information to a controller or operator interface. Key specifications noted on this listing include 600Vac, 250Vdc, 400A, 400 Amp. It is commonly in production lines requiring accurate detection or operator control.
