Siemens 3RT2037-3AK60 SIRIUS Power Contactor, 65A, S2, Spring-Loaded Original Brand New

High-Performance 3-Pole Power Contactor with Spring-Loaded Control

The Siemens 3RT2037-3AK60 is a robust and reliable 3-pole power contactor from the cutting-edge SIRIUS 3RT2 series, designed for demanding motor control and switching applications. Rated for up to 65 A (AC-3e/AC-3) and 30 kW at 400 V, this Size S2 contactor combines high switching capacity with a compact footprint.

It features a dual-terminal design: reliable screw terminals for the main circuit and time-saving spring-loaded terminals for the control and auxiliary circuits. Activated by a versatile 110 V AC (50 Hz) / 120 V AC (60 Hz) coil, this German-engineered component ensures maximum operational efficiency and high availability for your industrial systems.

Key Features & Specifications

• Product Number: 3RT2037-3AK60
• Series: Siemens SIRIUS 3RT2
• Contactor Size: S2
• Poles: 3-pole
• Rated Operational Current (AC-3e/AC-3): 65 A (at 400 V)
• Rated Operational Power (AC-3): 30 kW (at 400 V)
• Coil Control Voltage (AC): 110 V (50 Hz) / 120 V (60 Hz)
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC) integrated
• Main Circuit Connection: Screw Terminal
• Control/Auxiliary Circuit Connection: Spring-Loaded Terminal (Spring-Type)

Benefit

• Maximized Reliability: Part of the proven SIRIUS family, offering high contact reliability and a long mechanical service life (typically 10 million operating cycles).
• Time-Saving Wiring: The innovative spring-loaded terminals for control and auxiliary wiring allow for fast, vibration-proof, and maintenance-free connection, significantly reducing installation time.
• High Power Density: Compact Size S2 design handles a considerable 65 A/30 kW load, saving valuable space in control cabinets.
• Global Compatibility: Equipped with a dual-frequency (50/60 Hz) 110/120V AC coil, making it suitable for global applications and standard industrial power networks.
• Simplified Integration: Integrated 1 NO and 1 NC auxiliary contacts simplify control circuit design and minimize the need for external components.

Application and Function

The Siemens 3RT2037-3AK60 power contactor is the ideal solution for reliably switching three-phase AC motors and other industrial loads up to 65 A. Its primary functions include:

1. Motor Switching: Efficiently starting and stopping three-phase squirrel-cage motors (up to 30 kW).
2. Load Control: Switching resistive, inductive, and capacitive loads in various industrial and building technology systems (e.g., heating, lighting, and ventilation).
3. Circuit Isolation: Providing safe and reliable isolation of circuits when necessary.
4. Integration into Feeders: Forming part of an efficient and compact load feeder assembly when combined with compatible overload relays and circuit breakers.

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