Siemens SIRIUS 3RT2028-1BP40 Power Contactor, Size S0, 38A, 18.5kW, 230V DC Coil, 3-Pole, Screw Terminal Original Brand New

Overview

The Siemens 3RT2028-1BP40 is a high-performance, 3-pole power contactor from the SIRIUS 3RT2 series (Size S0). Engineered for motor switching up to 18.5 kW at $400\text{ V}$, this robust device features a continuous operational current (Ie​) of $38\text{ A}$ for AC-3/AC-3e applications. It is equipped with a reliable $230\text{ V DC}$ control supply voltage and includes integrated $1\text{ NO}+1\text{ NC}$ auxiliary contacts for immediate control circuit integration. Its user-friendly screw terminal design ensures a secure and straightforward wiring process.

Benefit & Features

• Optimal Performance: Rated for $38\text{ A}$ (AC-3/AC-3e) and $18.5\text{ kW}$ motor switching, ensuring efficiency and reliability in industrial applications.
• Space-Saving Design: Part of the SIRIUS modular system, the Size S0 contactor offers high performance in a compact footprint.
• DC Coil Efficiency: Features a $230\text{ V DC}$ coil, often preferred for specific control circuit stability and compatibility.
• Simple Wiring: Robust screw terminal connections provide high contact reliability and are easy to install.
• Integrated Flexibility: Comes standard with $1\text{ NO}+1\text{ NC}$ auxiliary contacts, simplifying circuit design for control and signaling.
• Globally Approved: Complies with international standards (e.g., IEC, UL/CSA), making it suitable for worldwide deployment.
• Compatibility: Fully compatible with a wide range of SIRIUS 3RV2 motor circuit breakers and 3RB3 overload relays for creating complete load feeders.

Function

The Siemens 3RT2028-1BP40 power contactor serves as an electro-mechanical switching device designed primarily for switching the main current circuits of 3-phase asynchronous motors. By receiving a control signal from its $230\text{ V DC}$ coil, the contactor reliably opens and closes the main power circuit, facilitating the starting, stopping, and controlling of electrical loads. The integrated auxiliary contacts provide immediate feedback to the control system (PLC, relay) about the main contactor’s status (open/closed).

Application

Ideal for use in:

• Motor Control Centers (MCCs)
• Pump and Fan Control
• Conveyor Systems
• HVAC Applications
• Machine Tools and Process Automation

For more of our high-quality industrial automation products, visit turll today!