Siemens 3RT2037-1KB40 Power Contactor 3-Pole, 65A, 30kW, 24V DC, Integrated Varistor Original Brand New

Overview

The Siemens 3RT2037-1KB40 is a high-performance 3-pole power contactor from the robust SIRIUS 3RT2 series. Designed for switching electric motors and control circuits, this Size S2 contactor delivers reliable operation in demanding industrial environments.

With a powerful 65 A (AC-3e/AC-3) current rating and a motor power rating of 30 kW at 400 V, it is a versatile solution for direct-on-line (DOL) starting. The unit features a 24 V DC control voltage with an integrated varistor for surge protection, making it particularly well-suited for connection to modern PLC outputs.

Key Benefit

• High Reliability: Designed for heavy-duty AC-3e and AC-3 applications.

• Energy Protection: Integrated varistor safeguards against voltage transients.

• Versatile Control: Suitable for PLC outputs with 24 V DC coil control.

• Easy Installation: Screw terminals and standard S2 frame size for quick integration.

• Auxiliary Contacts: 1 NO + 1 NC auxiliary contacts allow flexible control circuits.

Functions & Features

• Poles & Current Rating: 3-pole, 65 A

• Power Handling: Up to 30 kW at 400 V

• Coil Voltage: 24 V DC, 0.8-1.2 * Uc

• Protection: Integrated varistor for surge suppression

• Auxiliary Contacts: 1 normally open (NO) + 1 normally closed (NC)

• Mounting & Terminals: Screw terminal connections, frame size S2

• PLC Compatibility: Designed for seamless integration with programmable logic controllers

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