Siemens 3RT29361BC00 Varistor S2 Surge Suppressor

Product Description

The SIEMENS 3RT29361BC00 is a varistor surge suppressor designed for use with S2-frame contactors operating on coil voltages of 48 to 127 volts AC/DC. The varistor absorbs voltage spikes and transients generated when contactor coils are de-energized, protecting control circuits and connected components from damaging surges. At 0.013 pounds, this compact accessory mounts directly to compatible Siemens contactors without additional hardware. Electrical and controls technicians install this suppressor as part of a complete motor control or automation panel build where coil surge protection is required.

This varistor is suited for industrial and commercial control panel applications where Siemens S2-frame contactors are used in motor starters, HVAC equipment control circuits, and automation systems. The 48-127 volt operating range covers a wide band of common control voltages, making it applicable across many panel configurations. It ships as a single unit and installs directly onto the contactor body in the designated suppressor slot.

Key Features

• Varistor-type surge suppressor for coil transient absorption on S2 contactors
• Operating voltage range: 48 to 127 volts AC/DC
• Direct-mount design attaches to compatible S2-frame Siemens contactors without tools
• Compact footprint: 2.283 inches x 0.669 inches x 1.339 inches
• Lightweight at 0.013 pounds — adds negligible mass to panel assembly
• Sold as a single unit per pack

Compatibility

Designed for use with Siemens S2-frame contactors requiring a coil surge suppressor in the 48-127 volt range. Confirm contactor frame size and suppressor slot availability before ordering.

Installation Notes

Installation is typically performed by a licensed electrician or qualified controls technician. De-energize and lock out the control panel before installing or removing any contactor accessory. The suppressor snaps into the designated coil suppressor port on the contactor body — no additional wiring is required. Follow applicable NEC guidelines and local electrical codes for control panel assembly and modification.

Technical Specifications

• Suppressor Type: Varistor
• Contactor Frame Size: S2
• Coil Voltage Range: 48 to 127 volts
• Length: 2.283 inches
• Width: 0.669 inches
• Height: 1.339 inches
• Weight: 0.013 pounds
• Package Quantity: 1
• UPC: 88762191929

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RT29361BC00