Siemens SIRIUS 3RT2018-2AF01 Power Contactor, 16A, 7.5kW, 3-Pole, 110V AC Coil, Spring Terminal, Size S00 Original Brand New

Overview

The Siemens SIRIUS 3RT2018-2AF01 is a high-performance, 3-pole power contactor from the globally recognized SIRIUS modular system. Designed for switching motors and other resistive loads in demanding industrial environments, this unit is part of the compact Size S00 range, offering reliability up to 7.5 kW. It features a reliable 110 V AC control coil and is equipped with innovative spring-loaded terminals for fast, vibration-proof, and maintenance-free wiring.

• Part Number: 3RT2018-2AF01
• Series: SIRIUS 3RT2
• Size: S00
• Poles: 3-pole
• Rated Operational Current (AC-3e/AC-3): 16 A at 400 V
• Rated Power: 7.5 kW at 400 V
• Control Coil Voltage: 110 V AC, 50/60 Hz
• Auxiliary Contacts: 1 NO (Normally Open)
• Terminal Type: Spring-loaded (Spring-type)

Technical Benefits & Features

• Space-Saving Design (Size S00): Extremely compact dimensions, optimizing control panel space.
• High Performance: Capable of handling switching tasks for motors up to 7.5 kW / 16 A (at 400V, AC-3/AC-3e).
• Vibration-Proof Connection: Spring-loaded terminals (also known as spring-type terminals or cage clamp terminals) ensure secure and reliable connections, ideal for applications with high vibration. This significantly reduces installation time and ongoing maintenance.
• Global Standard Compliance: Meets international standards (e.g., IEC 60947), making it suitable for worldwide use.
• Integrated Auxiliary Contact: Includes one pre-installed Normally Open (1 NO) auxiliary contact for signaling or interlocking circuits.
• Reliable Operation: Designed for long mechanical and electrical service life, ensuring maximum operational availability.

Function / Application

The Siemens 3RT2018-2AF01 power contactor is primarily used for:

• Switching 3-Phase Motors: Excellent for operating squirrel-cage motors (Direct-On-Line start) in applications like pumps, fans, compressors, and conveyer systems.
• Controlling Resistive Loads: Switching heating elements, lighting, or capacitor banks.
• Integration in Load Feeders: Serves as the main switching element in motor starters, often combined with a thermal overload relay (e.g., SIRIUS 3RU2) for complete motor protection.
• General Purpose Switching: A foundational component in low-voltage switchgear and control cabinets for reliable power switching.

Compatibility & Accessories

The SIRIUS 3RT2 series offers a vast range of modular accessories, ensuring maximum flexibility. Compatible accessories include:

• Auxiliary switch blocks (additional contacts)
• Surge suppressors
• Pneumatic time-delay blocks

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