Product Description

Power Contactors, SIRIUS 3RT2 Series, 3-Pole, Screw Terminals, AC-3 Duty, Coil Variant AL20 – 3RT2037-1AL20

🔹 Siemens SIRIUS 3RT2 Power Contactor – 3RT2037-1AL20 (AC-3 Duty, 3-Pole, 230V AC Coil, S2 Size, ~65A Class, 1NO + 1NC Auxiliary)

🔹 Product Description

The Siemens 3RT2037-1AL20 is a heavy-duty SIRIUS 3RT2 series power contactor designed for switching motors and industrial loads under AC-3 / AC-3e duty applications. It belongs to the S2 frame size category, offering high current handling capacity and robust construction for demanding industrial control and power distribution systems.

This model features a 3-pole configuration with durable screw-type terminals, ensuring secure wiring connections and long operational reliability in industrial environments.

It is equipped with a 230V AC coil (AL20), making it suitable for standard control circuits used in motor starters, control panels, and automation systems.

A key feature of this variant is its integrated auxiliary contacts (1NO + 1NC), which provide reliable feedback, interlocking, and control signal integration for industrial applications.

Built on the Siemens SIRIUS modular platform, it supports seamless integration with overload relays and accessories, enabling flexible and scalable panel design.

With high electrical endurance, strong switching performance, and stable operation under frequent cycles, this contactor is well-suited for industrial motor control systems.

🔹 Key Features

• Genuine Siemens SIRIUS 3RT2 Series Contactor
• Model: 3RT2037-1AL20
• 3-Pole heavy-duty switching design
• AC-3 / AC-3e duty optimized for motor control applications
• 230V AC coil (AL20 variant)
• S2 frame size (~65A class)
• Screw terminal connection for secure wiring
• Integrated auxiliary contacts (1NO + 1NC)
• High electrical and mechanical endurance
• Compatible with Siemens overload relays & accessories
• Suitable for industrial automation systems
• Modular design for panel flexibility