Siemens 3RT2037-1AP04 SIRIUS Power Contactor, 65A, 30kW, 230V AC, S2 Original Brand New

Overview: Siemens SIRIUS 3RT2037-1AP04 Power Contactor

The Siemens SIRIUS 3RT2037-1AP04 is a high-performance, robust, 3-pole power contactor designed for switching motors and other resistive loads up to 65A in accordance with AC-3e/AC-3 standards. Part of the trusted SIRIUS family, this model features a compact Size S2 design and is rated for a maximum operational power of 30 kW at 400 V.

It is equipped with a reliable 230 V AC, 50 Hz operating coil and an integrated, removable auxiliary switch block providing 2 Normally Open (NO) and 2 Normally Closed (NC) contacts for signaling and interlocking circuits. All connections, including the main and auxiliary circuits, utilize robust screw terminals for secure wiring.

Benefits & Key Features

• High Performance: Capable of reliably switching 3-phase motors up to 30 kW / 65A (AC-3e/AC-3).
• Integrated Auxiliary Contacts: The built-in 2 NO + 2 NC auxiliary switch block saves installation time and panel space, and is conveniently removable for simplified maintenance or accessory mounting.
• Durable and Reliable: Engineered for long mechanical and electrical service life, typical of the SIRIUS family, ensuring minimized downtime.
• Easy Wiring: Features universally recognized and robust screw terminals for main and auxiliary circuits.
• Space-Saving Design: The compact Size S2 footprint allows for high packing density in industrial control cabinets.

Function

The 3RT2037-1AP04 functions as an electromechanical switch for remote control of power circuits. When the $230\text{ V AC}$ control coil is energized, the main contacts close, connecting the power supply to the load (e.g., an electric motor). Simultaneously, the auxiliary contacts switch state, providing feedback (NO contacts) and enabling safe interlocking functions (NC contacts) within the control system. It is suitable for applications such as:

• Starting and stopping standard $3$-phase motors.
• Switching resistive loads (e.g., heating elements).
• Controlling automation systems in conjunction with PLCs and other control devices.

To explore our full range of Siemens SIRIUS contactors, motor protection components, and other industrial control products, please visit turll today!