3-Phase Solid State Relay for Reliable Industrial Control [2025 Guide]

A 3-phase solid state contactor is an SSR of greater complexity used with higher power inductive loads, featuring integrated RC snubbers which attenuate motor or transformer voltage spikes. It has no mechanical sound or movement, which further increases lifespan and cuts down maintenance costs when compared to older electro-magnetic contactors. It also provides fault detection in motor control centers in less than 10ms, allowing for instant fault detection and isolation. It has common applications in elevator drives and renewable energy inverters and is capable of operating with 400V AC systems.