Siemens 3TB4817-0A Contactor

Siemens 3TB4817-0A is a three‑pole motor contactor in the 3TB48 family, designed for reliable IEC 3‑phase motor control in industrial panels. This model uses a 96/115 VAC coil and is paired with an overload relay kit identified as 3U4300-8AN, rated for motors in the 40–63 A range to provide protection during start‑up and runtime. Ideal for switching 3‑phase motors in applications such as pumps, fans, conveyors, and compressors, the 3TB48 line offers compact integration with Siemens accessories (auxiliary contacts, coil kits, and overload options) to match specific control schemes. The unit is intended for AC control circuits and works within Siemens’ ecosystem of motor starters, enabling straightforward installation, wiring, and expansion within existing panels. With its three‑pole configuration and integrated overload, this contactor supports reliable on/off control and motor protection in industrial environments like HVAC installations, manufacturing conveyors, and process equipment, while the 96/115 VAC coil variants provide flexibility for common plant control voltages.