Siemens SIRIUS 3RT2018-1AB02 Power Contactor, 3-Pole, 16 A, 7.5 kW, 24V AC Coil, Size S00, Screw Terminal Original Brand New

Overview

The Siemens 3RT2018-1AB02 is a high-performance 3-pole power contactor from the globally recognized SIRIUS 3RT2 series, specifically designed for switching motors and other resistive loads in industrial control systems. With an operational rating of 16 A for AC-3/AC-3e (up to 7.5 kW at 400 V), this compact size S00 contactor provides reliable, high-contact fidelity switching in demanding environments.

It features a control supply voltage of 24 V AC at 50/60 Hz and comes equipped with a dependable screw terminal connection system for both the main and auxiliary circuits. An integrated 1 NC auxiliary contact simplifies wiring for basic control feedback and interlocking applications. The 3RT2018-1AB02 is fully compatible with the SIRIUS modular system, making it an excellent component for building efficient and scalable load feeders.

Technical Specification

• Product Number: 3RT2018-1AB02
• Brand: Siemens
• Product Series: SIRIUS 3RT2
• Contactor Size: S00
• Number of Poles: 3-pole
• Rated Operational Current (Ie) at 400 V AC-3/AC-3e: 16 A
• Rated Operational Power at 400 V AC-3: 7.5 kW (Kilowatts) / 10 HP (Horsepower at 460V)
• Coil Voltage (Control Supply Voltage Us): 24 V AC, 50/60 Hz
• Auxiliary Contacts: 1 Normally Closed (NC)
• Terminal Type: Screw Terminal
• Operating Voltage (Max): 690 V
• IEC/UL/CSA Approved: Yes (Ready for worldwide use)

Benefit & Features

1. Compact, Space-Saving Design (Size S00): Optimized dimensions allow for high-density control cabinet layouts, reducing overall panel size and cost.
2. Reliable Motor Control: Rated for AC-3e/AC-3 service up to 16 A / 7.5 kW, making it ideal for standard industrial motor switching applications.
3. Simplified Control Integration: Features a standard 24V AC coil, one of the most common control voltages, with an integrated 1 NC auxiliary contact for easy interlocking and status signaling.
4. Robust & Durable: Exceptional mechanical service life (typically 30 million switching cycles).
5. Easy and Secure Wiring: Dependable screw terminals ensure a secure, vibration-proof connection for main and auxiliary circuits.
6. Modular System Compatibility: Seamlessly integrates with the SIRIUS modular system accessories (e.g., overload relays, auxiliary switch blocks, function modules) to quickly build complete motor starters.
7. Global Compliance: Approved for worldwide applications (IEC and UL/CSA), ensuring broad usability.

Application

The Siemens 3RT2018-1AB02 contactor is the ideal choice for switching 3-phase AC motors and other inductive or resistive loads, including:

• Controlling pumps, fans, and conveyor systems.
• Integrating into Star-Delta (Wye-Delta) starter configurations.
• Switching heating elements and lighting loads (AC-1 duty).
• Forming complete motor starters when combined with a SIRIUS 3RU or 3RB overload relay.

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