Siemens SIRIUS 3RT2037-1AN20 Power Contactor, 65A, 30kW, 400V, 3-Pole, 220V AC Coil, Size S2 Original Brand New

Overview: The Siemens SIRIUS 3RT2037-1AN20 Power Contactor

The Siemens 3RT2037-1AN20 is a high-performance 3-pole power contactor from the globally recognized SIRIUS 3RT2 product family. Engineered for reliable switching of motors and other demanding industrial loads, this contactor is designed to meet modern efficiency standards, including the high requirements of AC-3e/AC-3 applications. Its compact Size S2 housing and robust construction make it a cornerstone component in industrial control panels and motor starters worldwide.

Key Technical Specification

• Product Number: 3RT2037-1AN20
• Manufacturer: Siemens
• Series: SIRIUS 3RT2
• Contactor Size: S2
• Poles: 3-pole
• Operating Current (AC-3e/AC-3): $65A$ (at $400V$)
• Operating Power (AC-3e/AC-3): $30kW$ (at $400V$)
• Control Supply Voltage (Coil): $220VAC,50/60Hz$
• Auxiliary Contacts: $1NO$ (Normally Open) + $1NC$ (Normally Closed)
• Terminal Type: Screw terminals for secure and simple wiring

Benefit

1. High Reliability & Durability: As part of the SIRIUS family, it offers exceptional mechanical and electrical service life, minimizing downtime and maintenance costs.
2. Optimized for Modern Motors: Specifically designed for switching standard and high-efficiency motors (IE2, IE3, IE4), ensuring energy-efficient operation.
3. Space-Saving Design (Size S2): The compact dimensions allow for a high packing density in control cabinets, saving valuable panel space.
4. Integrated Auxiliary Contacts: The built-in $1NO+1NC$ contacts simplify wiring for control and signaling circuits, avoiding the need for separate, side-mounted blocks.
5. Easy Installation: Features robust screw terminals and a design optimized for the SIRIUS modular system, ensuring quick and flexible assembly.
6. Global Standard: Fully certified with global approvals (e.g., CE, UL, CSA, CCC), making it suitable for international applications.

Function

The Siemens 3RT2037-1AN20 power contactor is primarily used as an electrical switching device for:

• Starting and Stopping 3-Phase Motors: Up to $30kW/400V$.
• Switching Electrical Heating: Controlling high-current resistive loads.
• Controlling Lighting Circuits: Especially for large industrial or commercial lighting systems.
• Part of a Motor Starter Combination: Often combined with a SIRIUS overload relay (e.g., 3RU2) and circuit breaker for complete motor protection and control.

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