Siemens SIRIUS 3RT2028-1BE80 Power Contactor, 3-Pole, 38A, 18.5kW, S0 Size with 80V DC Coil and Screw Terminals Original Brand New

Overview

The Siemens SIRIUS 3RT2028-1BE80 Power Contactor is a high-performance, compact switching device engineered for reliable motor control and load switching up to 18.5 kW at 400 V. Part of the globally recognized SIRIUS modular system, this 3-pole contactor (Size S0) is designed for use in demanding industrial environments, featuring a robust construction and simplified wiring via secure screw terminals. It is rated for both the new efficiency-driven AC-3e and traditional AC-3 utilization categories.

Key Specification

• Product Number: 3RT2028-1BE80
• Brand/Series: Siemens SIRIUS 3RT2
• Function: Power Contactor (AC switching)
• Poles: 3-pole
• Operating Current (Ie): 38 A (at 400V, AC-3e/AC-3)
• Rated Power: 18.5 kW (at 400 V)
• Coil Control Voltage: 80 V DC (Direct Current)
• Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed)
• Connection Type: Screw Terminal
• Size: S0

Benefit

• High Performance & Efficiency: Designed for the modern AC-3e efficiency standard, ensuring optimal performance for motor starting and general load switching.
• Reliable DC Operation: Features an 80 V DC coil for reliable, low-power control directly from DC systems.
• Space-Saving Size S0: Compact design (Size S0) allows for high-density panel installation, saving valuable cabinet space.
• Easy & Secure Wiring: Dependable screw terminals provide a secure, proven connection method for main and auxiliary circuits.
• Integrated Auxiliary Contacts: The built-in 1 NO + 1 NC auxiliary contacts simplify control circuit design and provide immediate status feedback.
• Global Standard: Complies with major international standards (IEC, UL, CSA, etc.) for worldwide application flexibility.

Function & Application

The 3RT2028-1BE80 contactor’s primary function is the reliable switching and control of electric motors. Its robust design makes it ideal for:

• Starting and stopping 3-phase AC motors up to 18.5 kW.
• Switching resistive, inductive, and capacitive loads.
• Integration into automated control systems, motor starter combinations (in conjunction with SIRIUS overload relays), and machinery requiring frequent on/off cycles.
• Use in applications where an 80V DC control voltage is standardized.

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