Siemens 3RH29112FA22 Auxiliary Contactor Accessory

Product Description

The SIEMENS 3RH29112FA22 is an auxiliary contactor accessory designed to expand the switching capacity of compatible Siemens contactor assemblies. This add-on module mounts directly to a base contactor, adding supplementary contact blocks for control-circuit switching in motor control centers, panel boards, and industrial control panels. Electricians and controls technicians install this accessory when additional auxiliary contacts are needed for interlocking, status signaling, or safety-circuit functions. At 0.108 pounds and compact dimensions of 2.283 inches x 2.165 inches x 1.890 inches, it integrates cleanly into tight enclosure layouts without requiring additional mounting hardware.

This auxiliary contactor accessory is suited for use in commercial and light industrial electrical control systems where expanded auxiliary contact capacity is required. Typical applications include motor starters, control relay assemblies, and automation panel builds where discrete switching signals must be multiplied across multiple circuits. The compact form factor makes it appropriate for both new panel construction and field retrofits on existing Siemens contactor installations.

Key Features

• Snap-on accessory mount for direct attachment to compatible Siemens base contactors
• Adds auxiliary contact blocks for control-circuit interlocking and status signaling
• Compact footprint: 2.283 inches x 2.165 inches x 1.890 inches
• Lightweight at 0.108 pounds for easy handling and installation in tight enclosures
• Single unit per pack for precise quantity ordering

Compatibility

Designed as an OEM-style accessory for compatible Siemens contactor assemblies requiring auxiliary contact expansion. Verify base contactor model compatibility against Siemens product documentation before ordering.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC requirements and local codes. De-energize and lock out the control panel before attaching or removing contactor accessories. Confirm that the base contactor is fully de-energized and isolated before snapping the accessory module into place. Do not force the module; improper seating can damage the contact interface.

Technical Specifications

• Weight: 0.108 pounds
• Length: 2.283 inches
• Width: 2.165 inches
• Height: 1.890 inches
• Package Quantity: 1 per pack
• UPC: 04089256757

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RH29112FA22