Siemens 3TX7402-3A Surge Suppressor

Product Description

The SIEMENS 3TX7402-3A is a surge suppressor designed as an accessory for relay and contactor bases. It protects control circuits by absorbing and dissipating voltage spikes that occur when inductive loads such as relay coils, solenoids, and motor starters are de-energized. These transient voltage events can degrade or destroy sensitive control components over time. The 3TX7402-3A mounts directly to compatible relay sockets, making installation straightforward for electricians and controls technicians working on industrial and commercial control panels. Its compact form factor allows it to fit in tight enclosure layouts without adding significant bulk.

This surge suppressor is suited for commercial and industrial electrical control applications where relay coils or contactor coils are switched repeatedly. It is commonly installed in motor control centers, automation panels, and building automation control enclosures. Electricians and industrial controls technicians install this component during panel build-out or as a retrofit to existing relay bases experiencing coil-induced interference or unexplained control circuit faults.

Key Features

• Absorbs inductive voltage transients to protect downstream control circuit components
• Direct-mount design attaches to compatible relay socket bases without additional hardware
• Compact dimensions allow installation in space-constrained control enclosures
• Lightweight construction at approximately 0.031 pounds adds negligible load to relay assemblies
• UPC 75455420384 for verified product identification at receiving

Compatibility

Designed as an OEM-style accessory for compatible SIEMENS relay socket bases. No specific compatible model numbers were provided in the product data. Verify socket compatibility against the relay base series documentation before ordering.

Installation Notes

Installation should be performed by a qualified electrician in accordance with applicable NEC guidelines. De-energize and lock out the control panel before handling any relay components or accessories. Confirm the surge suppressor orientation and seating on the relay base before restoring power. Do not force the suppressor onto an incompatible socket base, as this may damage the contact pins.

Technical Specifications

• Weight: 0.031 pounds
• Length: 1.339 inches
• Width: 1.063 inches
• Height: 0.591 inches
• UPC: 75455420384

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3TX7402-3A