Siemens 3RH29111AA01 Auxiliary Switch

Product Description

The SIEMENS 3RH29111AA01 is an auxiliary switch designed to add supplementary contact functionality to compatible contactors and relay assemblies. It mounts directly to a host contactor to provide additional signaling or interlocking contacts in control circuits. Electricians and industrial maintenance technicians install this switch where expanded contact capacity is required without replacing the primary contactor. The unit weighs 0.044 pounds, making it a compact add-on that does not significantly change the footprint of the host device.

This auxiliary switch is suited for use in motor control centers, panel boards, and industrial control enclosures where contactors or control relays require additional contact blocks. It is appropriate for both light commercial and industrial applications where reliable status signaling, interlocking, or auxiliary circuit control is needed. The compact dimensions allow installation in tight enclosures where space is limited.

Key Features

• Direct-mount auxiliary switch block for compatible SIEMENS contactors and relays
• Compact and lightweight at 0.044 pounds for easy add-on installation
• Provides supplementary contacts for signaling or interlocking control circuits
• Packaged individually, one unit per pack
• Dimensions of 4.803 inches x 3.504 inches x 1.496 inches for straightforward fitment verification

Compatibility

Designed as an OEM-style auxiliary contact block for use with compatible SIEMENS contactors and control relays. Verify host contactor model acceptance of this auxiliary block before installation.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC requirements and the host contactor manufacturer guidelines. De-energize and lock out the panel or motor control center before attaching or removing any auxiliary contact block. Confirm that all snap-fit or screw-mount connection points are fully seated before restoring power. Do not exceed the contact ratings of the auxiliary switch or the host contactor assembly.

Technical Specifications

• Weight: 0.044 pounds
• Length: 4.803 inches
• Width: 3.504 inches
• Height: 1.496 inches
• Quantity per Pack: 1
• UPC: 66264390984

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RH29111AA01