Siemens 3RT2035-1KB44 Contactor Coupling Relay

Product Description

The SIEMENS 3RT2035-1KB44 is a contactor coupling relay designed for industrial motor control and switching applications. This device serves as an interface component between control circuits and power contactors, enabling coordinated operation in automation and electrical distribution systems. Rated for demanding duty cycles, it fits into standard control panel and motor control center builds. Licensed electricians and industrial control technicians typically source this component for new panel builds, system upgrades, or direct OEM-style replacement of a failed coupling relay in an existing installation. Its compact form factor allows integration into space-constrained enclosures.

This coupling relay is suited for use in commercial and industrial electrical systems where reliable contactor coordination is required. Typical applications include motor starters, HVAC equipment control panels, conveyor systems, pump control stations, and automated machinery. It is designed to work within the SIEMENS 3RT series contactor ecosystem and is appropriate for installation in both new construction and retrofit control panel projects requiring a standardized, dependable switching interface.

Key Features

• Coupling relay function enables coordinated contactor switching in multi-device control circuits
• Compatible with the SIEMENS 3RT series contactor platform
• Compact enclosure fits standard DIN-rail and panel-mount installations
• Package dimensions of 7.480 inches x 5.276 inches x 3.071 inches allow straightforward handling and storage
• Sold as a single unit per pack for precise quantity ordering

Compatibility

Designed as an OEM-style coupling relay for use within the SIEMENS 3RT series contactor platform. Install only in systems and enclosures where the electrical ratings of the device match the circuit requirements.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize and lock out the panel or control circuit before beginning installation or removal. Verify that all circuit voltage and current ratings are compatible with the device before energizing. Do not modify the device or its terminals.

Technical Specifications

• Weight: 2.652 pounds
• Length: 7.480 inches
• Width: 5.276 inches
• Height: 3.071 inches
• Package Quantity: 1 per pack
• UPC: 80476632867

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RT2035-1KB44