Siemens 3RT1934-5AM21 Ac Suppressor Module

Product Description

The SIEMENS 3RT1934-5AM21 is an AC suppressor module designed to reduce electrical noise and voltage transients generated when contactors switch inductive loads. It mounts directly onto compatible SIEMENS 3RT-series contactors, providing arc suppression and electromagnetic interference reduction at the coil circuit. Weighing 0.26 pounds and measuring 2.638 inches long by 1.693 inches wide by 4.646 inches tall, this compact module integrates into tight panel and enclosure layouts without adding significant bulk. Electricians and industrial control technicians install this module during contactor assembly or field retrofit when EMI mitigation or coil protection is required.

This suppressor module is suited for AC coil applications in motor control centers, industrial control panels, HVAC equipment panels, and building automation systems. It is intended for use with SIEMENS 3RT-series contactors operating on AC coil circuits. The module is typically installed in environments where switching transients could interfere with nearby sensitive electronics or control circuits, making it a standard addition in noise-sensitive panel builds.

Key Features

• Suppresses voltage transients and EMI generated during contactor switching on AC coil circuits
• Direct plug-in mounting onto compatible SIEMENS 3RT-series contactors for tool-free installation
• Compact form factor at 2.638 x 1.693 x 4.646 inches fits standard control panel layouts
• Lightweight at 0.26 pounds, adding minimal load to the contactor assembly
• Sold individually, one module per pack

Compatibility

Designed as an OEM-style suppressor module for compatible SIEMENS 3RT-series AC contactors. Verify coil voltage and contactor frame size against SIEMENS documentation before ordering to confirm fitment for your specific application.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC requirements and applicable local codes. De-energize and lock out the panel before handling any contactor components. The module plugs onto the contactor coil terminals and should be seated firmly before restoring power. Do not install on DC coil contactors unless the part is confirmed rated for DC operation.

Technical Specifications

• Coil Type: AC
• Length: 2.638 inches
• Width: 1.693 inches
• Height: 4.646 inches
• Weight: 0.26 pounds
• Quantity per Pack: 1
• UPC: 75455441382

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RT1934-5AM21