Siemens 3RT2038-3AK60 SIRIUS 3RT2 Power Contactor 80A, 37kW, 110/120V AC Coil, Screw/Spring Terminal, Size S2 Original Brand New

Overview

The Siemens SIRIUS 3RT2038-3AK60 Power Contactor is a high-performance, 3-pole switching device engineered for reliable motor and load control in industrial environments. Part of the compact and powerful SIRIUS 3RT2 series, this contactor is rated for 80 Amps (AC-3e/AC-3) and designed to switch loads up to 37 kW at 400V.

Featuring a versatile control coil voltage of 110 V AC (50 Hz) / 120 V AC (60 Hz), it ensures broad compatibility across different electrical systems. The robust Size S2 construction offers a high power-to-size ratio. This model provides 3 main NO contacts and integrated auxiliary contacts (1 NO + 1 NC), ensuring comprehensive control and feedback capabilities. It combines screw terminals for the main circuit and spring-loaded terminals for control/auxiliary circuits, offering flexibility and fast, vibration-proof wiring.

Key Technical Specification

• Product: Power Contactor (Motor Contactor)
• Manufacturer: Siemens
• Series: SIRIUS 3RT2
• Product Number: 3RT2038-3AK60
• Size: S2
• Poles: 3-pole
• Rated Operational Current (Ie): 80 A (AC-3e/AC-3, at 400V)
• Rated Operational Power (Pe): 37 kW (at 400V, AC-3)
• Control Coil Voltage: 110 V AC (50 Hz) / 120 V AC (60 Hz)
• Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed)
• Main Circuit Connection: Screw Terminals
• Control/Auxiliary Circuit Connection: Spring-Loaded Terminals (Spring Terminals)

Benefit

• High Reliability: Engineered under the rigorous Siemens SIRIUS standards for long mechanical and electrical life (typically 10 million operations).
• Space-Saving Design: Size S2 compact dimensions help optimize panel space.
• Dual-Terminal Flexibility: Combines secure screw terminal connection for high-current main circuits with fast, maintenance-free spring-loaded terminals for control wiring.
• Global Standard Compliance: Meets international standards including IEC 60947-4-1, ensuring suitability for global applications.
• Motor Protection Ready: Seamlessly integrates with overload relays and circuit breakers from the SIRIUS portfolio to form a complete motor starter.

Function & Application

The 3RT2038-3AK60 Contactor is primarily used for the safe and reliable switching of 3-phase AC motors and resistive loads. Common applications include:

• Direct-On-Line (DOL) Motor Starters
• Switching large heating elements or lighting circuits
• Integration into complex automation and machine control systems
• Industrial pump, fan, and compressor control

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