🔹 Siemens SIRIUS 3RT2 Power Contactor – 3RT2037-1AG208K (AC-3 Duty, 3-Pole, 110V AC Coil, S2 Size, ~65A Class, 1NO + 1NC Auxiliary)
The Siemens 3RT2037-1AG208K 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 higher current handling capacity and robust performance for demanding industrial power control systems.
This model features a 3-pole configuration with durable screw-type terminals, ensuring secure wiring connections and long-term reliability in industrial environments.
It is equipped with a 110V AC coil variant (AG208K), suitable for conventional industrial control circuits used in motor starters, control panels, and automation systems.
A key feature of this variant is its integrated auxiliary contact configuration (1NO + 1NC), providing reliable feedback, interlocking, and control signal integration for safe and efficient system operation.
Built on the Siemens SIRIUS modular platform, it supports seamless integration with overload relays and accessory modules, enabling flexible and scalable panel design.
With strong electrical endurance, high switching capacity, and stable performance under frequent operations, this contactor is well-suited for industrial applications.
• Genuine Siemens SIRIUS 3RT2 Series Contactor
• Model: 3RT2037-1AG208K
• 3-Pole heavy-duty switching design
• AC-3 / AC-3e duty optimized for motor control applications
• 110V AC coil (AG208K 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
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2037-1AG208K |
| Product Type | Power Contactor |
| Frame Size | S2 |
| Poles | 3 Pole |
| Utilization Category | AC-3 / AC-3e |
| Rated Current | ~65 A |
| Power Rating | ~30 kW @ 400V |
| Coil Voltage | 110V AC (AG208K) |
| Auxiliary Contacts | 1NO + 1NC |
| Terminal Type | Screw Terminals |
| Mounting Type | Panel / DIN Rail (via accessories) |
| Brand | Siemens |
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