Leviton 5100MI9W PowerSwitch Mechanical Interlock

Leviton 5100MI9W PowerSwitch Mechanical Interlock is a 3‑phase electrical interlock switch designed for dedicated interlock functionality within power switching paths. It supports 120/208V operation and is rated for up to 100A, configured as a 4‑pole, 5‑wire device (4P5W) to accommodate a four‑conductor interlock assembly. This model belongs to Leviton’s PowerSwitch family and carries the 5100MI9W part number, offering a rugged interlock solution for 3‑phase installations. The 3‑phase 120/208V rating makes it suitable for 3‑phase power systems, while the 100A rating defines the maximum load it is designed to switch. The 4P5W configuration indicates four poles and five conductors integrated in the interlock assembly, supporting multi‑circuit switching within a single device. As a PowerSwitch mechanical interlock from Leviton, it is designed to work within the PowerSwitch ecosystem for coordinated interlock functionality in 3‑phase distribution setups.