Siemens SIRIUS 3RT2037-1AH04 Power Contactor, 65A, 30kW, 48V AC Coil, Size S2 Original Brand New

Overview

The Siemens SIRIUS 3RT2037-1AH04 is a high-performance, 3-pole power contactor from the robust SIRIUS 3RT2 series, engineered for switching motors and industrial loads up to 30 kW at 400 V (AC-3/AC-3e). This contactor features a specialized 48 V AC, 50 Hz control coil, making it ideal for systems requiring this specific low-voltage AC control power. Its compact Size S2 design and integrated, removable auxiliary contacts make it a flexible and reliable component in motor feeders and control panels.

Key Technical Specifications

• Product Number: 3RT2037-1AH04
• Series: SIRIUS 3RT2
• Contactor Type: Power Contactor (Motor Switching)
• Load Rating (AC-3/AC-3e): 65 A
• Rated Power: 30 kW / 400 V
• Poles: 3-pole
• Control Coil Voltage: 48 V AC, 50 Hz
• Auxiliary Contacts: 2 NO (Normally Open) + 2 NC (Normally Closed)
• Terminal Type: Screw Terminal
• Size: S2
• Feature: Removable Auxiliary Switch Block

Functions and Applications

The 3RT2037-1AH04 contactor is primarily used for switching 3-phase AC motors. Its precise specifications make it essential for:

• Starting and stopping motor loads in machinery.
• Controlling pumps, fans, and compressors.
• Integration into complex automated systems and control panels using a 48V AC control circuit.
• Building motor starters (in combination with an overload relay).

Key Benefits

• High Performance: Reliable switching of high loads up to 65 A and 30 kW.
• Versatile Integration: Part of the modular SIRIUS system, allowing for easy connection with other components like overload relays and circuit breakers.
• Enhanced Control: Includes 2 NO and 2 NC auxiliary contacts for versatile feedback and interlocking circuits.
• Easy Installation: Features robust screw terminals for secure and straightforward wiring.
• Durable and Certified: Built to Siemens quality standards and suitable for worldwide use (IEC, UL/CSA ready).

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