Siemens 3RT29261ER00 Contactor Suppressor Module

Product Description

The SIEMENS 3RT29261ER00 is a suppressor module designed to reduce voltage transients and electrical noise generated when contactor coils de-energize. This type of surge suppression accessory mounts directly to compatible SIEMENS 3RT-series contactors and protects connected control circuits from damaging voltage spikes. It is a small, low-mass component used in motor control centers, panel boards, and industrial control enclosures. Licensed electricians and industrial controls technicians install this module as part of a complete motor starter or contactor assembly. The compact form factor and snap-on design make it a straightforward field addition or replacement during contactor servicing.

This suppressor module is suited for use in residential, commercial, and light industrial electrical control panels where 3RT-series contactors are installed. It is commonly added when relay chatter, control circuit interference, or coil-induced noise is observed during contactor switching. Applications include HVAC motor starters, pump control panels, compressor contactors, and general-purpose motor control assemblies where clean switching is required. The module ships individually and is intended for direct accessory mounting to the contactor body without additional hardware.

Key Features

• Suppresses voltage transients generated by contactor coil de-energization
• Snap-on accessory mount for direct installation on compatible 3RT-series contactors
• Compact profile measuring 2.205 inches x 1.220 inches x 0.512 inches
• Lightweight construction at 0.011 pounds for minimal load on contactor assembly
• Protects downstream control circuits from coil-induced electrical noise

Compatibility

Designed as an OEM-style suppressor accessory for SIEMENS 3RT-series contactor assemblies. Verify specific contactor frame size and coil voltage compatibility before installation using the SIEMENS accessories selection guide.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize and lock out the panel or motor control center before installing or replacing this module. The suppressor snaps onto the contactor coil terminals and requires no special tooling, but terminal orientation should be confirmed against the contactor wiring diagram. Do not install on energized equipment.

Technical Specifications

• Length: 2.205 inches
• Width: 1.220 inches
• Height: 0.512 inches
• Weight: 0.011 pounds
• Package Quantity: 1 per pack
• UPC: 66264392076

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RT29261ER00