Siemens 3RT1935-5AM21 Ac Suppressor Module

Product Description

The SIEMENS 3RT1935-5AM21 is an AC suppressor module designed to reduce voltage spikes and electromagnetic interference generated when contactor and relay coils de-energize. Surge suppression accessories like this module protect sensitive control circuits and extend the service life of switching components in industrial and commercial control panels. The module mounts directly onto compatible SIEMENS 3RT-series contactors, keeping the installation compact and eliminating the need for separate suppression wiring. At 0.293 pounds, it is a lightweight add-on suited for panel builders and controls technicians working in tight enclosure spaces.

This suppressor module is intended for use in AC control circuit applications where coil-generated transient voltages must be clamped before they reach PLCs, sensors, or other low-voltage control devices. It is a standard accessory in commercial HVAC control panels, motor control centers, and industrial automation panels where SIEMENS 3RT-series contactors are already installed. Electricians and controls technicians typically install this module during new panel builds or as a retrofit on existing contactor assemblies.

Key Features

• Suppresses AC coil voltage transients to protect downstream control components
• Snap-on mounting fits directly to compatible SIEMENS 3RT-series contactors
• Compact form factor at 2.638 inches x 1.693 inches x 4.646 inches
• Lightweight at 0.293 pounds for easy handling in confined panel spaces
• Reduces electromagnetic interference on shared control wiring

Compatibility

Designed as an OEM-style suppressor accessory for use with compatible SIEMENS 3RT-series AC contactors and relay assemblies.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC guidelines and the panel manufacturer's documentation. De-energize and lock out the control panel before installing or removing the suppressor module. The module snaps onto the contactor body without additional tools in most applications. Verify that the suppressor voltage rating matches the coil voltage of the contactor before powering the circuit.

Technical Specifications

• Coil Type: AC
• Length: 2.638 inches
• Width: 1.693 inches
• Height: 4.646 inches
• Weight: 0.293 pounds
• Pack Quantity: 1
• UPC: 75455441468

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RT1935-5AM21