Siemens SIRIUS 3RT2037-1AN24 Power Contactor, 65A, 30kW, 3-Pole, 220V AC Coil, Size S2, 2 NO + 2 NC Aux Original Brand New

Product Overview

The Siemens SIRIUS 3RT2037-1AN24 Power Contactor is a high-performance switching device designed for reliable motor control and general resistive load applications in industrial environments. Part of the compact and versatile SIRIUS 3RT2 series, this 3-pole contactor is rated for $65\text{ A}$ (AC-3e/AC-3) and $30\text{ kW}$ at $400\text{ V}$.

Featuring a $220\text{ V AC}(50/60\text{ Hz})$ coil and robust screw terminals, it ensures secure and straightforward wiring. The integrated $2\text{ NO}+2\text{ NC}$ auxiliary contacts, supplied via a removable auxiliary switch block, offer maximum flexibility for control and signaling circuits. Its Size S2 construction provides a compact yet powerful solution for motor feeders up to $30\text{ kW}$.

Key Technical Specification

• Product Number: 3RT2037-1AN24
• Series: SIRIUS 3RT2
• Contactor Type: Power Contactor (Motor Switching)
• Utilization Category: AC-3e / AC-3
• Rated Operational Current (Ie): $65\text{ A}$ (at $400\text{ V}$)
• Rated Power (Motor): $30\text{ kW}$ (at $400\text{ V}$)
• Number of Poles: 3-Pole (Main Circuit)
• Control Coil Voltage (Us): $220\text{ V AC},50/60\text{ Hz}$
• Auxiliary Contacts: $2\text{ NO}+2\text{ NC}$ (Removable Auxiliary Switch Block)
• Terminal Type: Screw Terminal
• Contactor Size: S2
• Max Insulation Voltage (Ui): $690\text{ V}$
• Mechanical Service Life: Up to 10 million operating cycles (typical)

Benefit

• High Performance in Compact Design: Size S2 contactor offers $65\text{ A}$ switching capacity for motors up to $30\text{ kW}$ while maintaining a space-saving profile.
• Global Standard Compliance: SIRIUS 3RT2 is globally approved (e.g., IEC and UL/CSA), making it suitable for international use and IE3/IE4-ready motor applications.
• Flexible Control: Pre-assembled and removable $2\text{ NO}+2\text{ NC}$ auxiliary contacts simplify wiring for control, interlocking, and signaling.
• Reliable and Durable: Built for a long mechanical service life (up to 10 million cycles) and resistance to extreme ambient conditions.
• Easy Installation: Features screw terminals for robust and familiar wiring connections, supporting DIN rail mounting.

Function

• Main Circuit Switching: Controls the flow of high current to 3-phase motors and electrical loads (AC-3e/AC-3 applications).
• Remote Operation: The $220\text{ V AC}$ coil allows the main contacts to be opened or closed remotely via a control signal.
• Integrated Signaling: The $2\text{ NO}$ (Normally Open) and $2\text{ NC}$ (Normally Closed) auxiliary contacts provide instantaneous switching for feedback, interlocks, and sequence control in the automation system.
• Integration: Perfectly complements other components in the SIRIUS modular system, such as overload relays and circuit breakers, to form complete motor feeder solutions.

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