Siemens SIRIUS 3RT2028-1AP04 Power Contactor 38A, 18.5kW, 230V AC, S0 Size Original Brand New

Overview

The Siemens SIRIUS 3RT2028-1AP04 is a high-performance power contactor designed for reliable switching and control of electrical loads in industrial applications. As part of the trusted SIRIUS modular system, this contactor is engineered for optimal efficiency and long-term durability.

It is rated for AC-3e/AC-3 operation, handling currents up to 38 A and motor power up to 18.5 kW at 400 V. The compact size S0 and versatile features make it an ideal component for motor control, automation systems, and various power distribution applications.

Key Features & Benefit

• High Performance: Rated for 38 A and 18.5 kW (at 400 V), ensuring robust performance for a wide range of industrial motors and loads.
• Reliable Switching: Designed for AC-3e/AC-3 applications, providing dependable switching of asynchronous motors under load.
• Integrated Auxiliary Contacts: Features a built-in 2 NO + 2 NC auxiliary switch block, offering enhanced control and feedback options without the need for additional modules.
• Removable Auxiliary Switch: The auxiliary switch is removable, providing flexibility for maintenance, replacement, or customization.
• Easy & Secure Connection: Utilizes screw terminals for a strong and reliable electrical connection, simplifying installation and maintenance.
• Space-Saving Design: The compact size S0 allows for efficient use of space within control cabinets and panels.
• Modular System: Part of the Siemens SIRIUS family, ensuring seamless integration with other SIRIUS components like overload relays and circuit breakers.
• High Durability: Built to withstand demanding industrial environments with a long electrical and mechanical service life.

Function

The Siemens 3RT2028-1AP04 power contactor is primarily used to switch on and off motors and other electrical loads. It acts as a remote-controlled switch, activated by a 230 V AC coil. The main contacts close to complete the power circuit, while the integrated auxiliary contacts can be used for signaling, interlocking, and control logic within a larger system. This contactor is a critical component in motor starters, control panels, and automation systems, providing safe and reliable power control.

Application

• Motor control and starting
• Pump and fan control
• Heating and lighting circuits
• HVAC systems
• Conveyor systems
• Automation and machine building

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