Siemens 3TB4217-6EG1 Three-Phase AC Contactor

Siemens 3TB4217-6EG1 is a three-pole AC-3 contactor in the SIRIUS 3TB family, engineered to switch three-phase loads in industrial control circuits with a robust build and AC-operation capability. Within the Siemens 3TB4217 lineup, these devices are configured for AC operation and three-pole duty, and cross-reference materials note that 3TB4217-6EG1 has no direct replacement, signaling its unique place in the catalog. Typically deployed to start and stop three-phase motors and other AC loads in automation environments, the 3TB4217-6EG1 enables reliable, repeatable switching under demanding industrial conditions. As part of Siemens' broader control-gear ecosystem, it integrates with compatible Siemens panels, controllers and accessories designed for motor control, supporting cohesive control architectures across the 3TB product family.