Siemens-Allis CXL403E Contactor

The Siemens-Allis CXL403E Contactor is a heavy-duty 3-pole motor starter rated for 135 A at up to 600 V, built to switch three-phase loads in industrial control panels. It uses a 120 V AC coil (Model E) to energize the main contacts, allowing it to be controlled from standard low-voltage control circuits. Listed as a NEMA Size 4 device, the CXL403E is commonly used to drive motors up to about 100 hp at 600 V, providing robust endurance for frequent starts and stops in demanding environments. This contactor is well-suited for motor control in applications such as pumps, fans, compressors, and conveyors, where reliable high-current switching is required in legacy Siemens-Allis installations or retrofit projects. Its 3-pole configuration enables simultaneous disconnection of all three supply lines, simplifying wiring and enhancing safety in control schemes.