Siemens 3RV29012E Transverse Auxiliary Contact Block

Product Description

The SIEMENS 3RV29012E is a transverse auxiliary contact block designed to mount laterally on compatible Siemens motor starter and circuit breaker assemblies. It extends the switching capability of the base device by adding auxiliary contact positions without increasing the overall footprint of the assembly. Licensed electricians and industrial controls technicians install this accessory during panel builds, motor control center (MCC) upgrades, and equipment maintenance. At 0.037 pounds and compact dimensions of 1.811 inches x 1.457 inches x 0.551 inches, the block fits into tight enclosures where space is at a premium.

This auxiliary contact block is suited for industrial and commercial electrical control applications where additional signaling, interlock, or status-monitoring contacts are required alongside a motor protection circuit breaker or manual motor starter. It is supplied as a single unit per pack and is intended for snap-on transverse mounting, making it a straightforward addition during initial assembly or field service without requiring specialized tooling beyond what a standard electrician carries.

Key Features

• Transverse mounting orientation for lateral installation on compatible base devices
• Compact form factor at 1.811 inches x 1.457 inches x 0.551 inches
• Lightweight at 0.037 pounds — suitable for dense panel layouts
• Snap-on design supports efficient field installation and replacement
• Single unit per pack for straightforward inventory and ordering

Compatibility

Designed as an OEM-style transverse auxiliary contact block for compatible Siemens motor starter and motor protection circuit breaker assemblies. Verify the specific base device series before ordering to confirm mechanical and electrical fitment.

Installation Notes

Installation should be performed by a licensed electrician or qualified controls technician in accordance with NEC requirements and applicable local codes. De-energize and lock out the circuit before attaching or removing any auxiliary contact block. Confirm the transverse mounting slot on the base device is clear and unobstructed before snapping the block into position. Do not force the block into place; misalignment can damage the contact mechanism.

Technical Specifications

• Mounting Type: Transverse
• Length: 1.811 inches
• Width: 1.457 inches
• Height: 0.551 inches
• Weight: 0.037 pounds
• Pack Quantity: 1
• UPC: 66264392480

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RV29012E