Siemens 3RT2028-2AK60 SIRIUS Power Contactor, 3-Pole, 38A, 18.5kW, AC-3/AC-3e, 110/120V AC Coil, Size S0, Spring Terminal Original Brand New

Overview

The Siemens 3RT2028-2AK60 is a high-performance, 3-pole SIRIUS 3RT2 Power Contactor designed for switching motors up to 18.5 kW at 400 V (or 25 HP at 480V, based on common size equivalence). As part of the SIRIUS Innovations range, this Size S0 contactor offers reliability and a compact design for modern industrial control applications. It is fully rated for both standard AC-3 and the energy-efficient AC-3e operation.

Key Specification

• Product Number: 3RT2028-2AK60
• Brand Series: SIRIUS 3RT2
• Switching Capacity (AC-3e/AC-3): 38 A
• Motor Power Rating: 18.5 kW / 400 V
• Poles: 3-pole
• Coil Voltage (Control Supply Voltage): 110 V AC (50 Hz) / 120 V AC (60 Hz)
• Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed) integrated
• Connection Type: Spring-loaded Terminal (Spring-type terminal)
• Frame Size: S0 (Size S0)

Function

The 3RT2028-2AK60 contactor is primarily used for switching and controlling 3-phase AC motors and other resistive or inductive loads in industrial environments. It provides reliable switching under normal operating conditions (AC-3) and is optimized for the latest efficiency standards (AC-3e). The integrated auxiliary contacts (1 NO and 1 NC) allow for easy implementation of control logic, feedback, and interlocking circuits. The spring-loaded terminals ensure fast, reliable, and vibration-proof wiring without the need for retightening.

Benefit

1. High Reliability & Long Service Life: Engineered for mechanical and electrical longevity, typical of the Siemens SIRIUS range.
2. Space Saving: Compact Size S0 design minimizes panel space requirements.
3. Fast & Secure Wiring: Spring-loaded terminals drastically reduce wiring time and ensure a permanent, high-integrity connection, even in high-vibration applications.
4. Global Standard Compliance: Suitable for worldwide use, adhering to major international standards and certifications (e.g., IEC, UL, CSA, CCC).
5. Simplified Control: Integrated $1NO+1NC$ auxiliary contacts eliminate the need for an external auxiliary switch block for basic control schemes.

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