Siemens SIRIUS 3RT2035-3AF06 Power Contactor, 41A, 18.5 kW, 110V AC Coil, Size S2 Original Brand New

Overview

The Siemens 3RT2035-3AF06 is a high-performance, 3-pole power contactor from the globally recognized SIRIUS 3RT20 series, designed for the efficient and safe switching of motors and resistive loads in industrial automation applications. This specific model is a Size S2 contactor rated for up to 41 A (AC-3e/AC-3) and 18.5 kW at $400\text{ V}$.

It features a durable 110 V AC, 50 Hz control voltage coil and comes pre-fitted with a lateral auxiliary switch block providing 2 NO + 2 NC auxiliary contacts for signaling and interlocking functions. The main circuit utilizes robust screw terminals, while the control and auxiliary circuits employ convenient spring-loaded terminals for fast, vibration-proof, and maintenance-free wiring. As part of the SIRIUS modular system, the 3RT2035-3AF06 offers exceptional compact design, high contact reliability, and flexibility in combination with other low-voltage industrial components.

Technical Specifications & Function

• Product Number: 3RT2035-3AF06
• Manufacturer: Siemens (SIRIUS 3RT20 Series)
• Type: Power Contactor (IEC Standard)
• Poles: 3-pole
• Rated Operational Current (Ie) (AC-3e/AC-3): 41 A (at $400\text{ V}$)
• Rated Operational Power (Pe) (AC-3e/AC-3): $18.5\text{ kW}$ (at $400\text{ V}$)
• Control Supply Voltage (Us): $110\text{ V AC},50\text{ Hz}$
• Size: S2
• Auxiliary Contacts: $2\text{ NO}+2\text{ NC}$ (Lateral auxiliary switch)
• Main Circuit Connection: Screw Terminal
• Control/Auxiliary Circuit Connection: Spring-Loaded Terminal (Spring-Type Terminal)
• Function: Switches the main current in three-phase motors and other loads, controlled by the $110\text{ V AC}$ coil voltage. The auxiliary contacts provide feedback or trigger other control circuits.
• Terminals: Combination of screw terminals (main circuit) and spring-loaded terminals (control/auxiliary circuit) for versatile installation requirements.

Key Benefit

1. High Performance in a Compact Design: Rated for up to $41\text{ A}$ and $18.5\text{ kW}$ in a space-saving Size S2 frame, optimizing cabinet space.
2. Reliable Motor Switching: Engineered for high electrical and mechanical endurance, ensuring reliable operation for motor applications (AC-3e/AC-3).
3. Versatile Wiring Options: Features durable screw terminals for the main power circuit and fast, maintenance-free spring-loaded terminals for the control circuit, simplifying installation and ensuring secure connections.
4. Integrated Auxiliary Contacts: The pre-assembled lateral auxiliary switch block provides $2\text{ NO}+2\text{ NC}$ contacts, reducing complexity and external wiring for essential control functions.
5. Global Standard & Compliance: Part of the modular SIRIUS system, offering worldwide approvals (e.g., IEC, UL/CSA) and suitable for IE3/IE4-ready applications.

Application

The Siemens 3RT2035-3AF06 Contactor is ideal for general motor control and switching applications across various industries, including:

• Industrial machinery and production lines
• Pumps and compressors control
• HVAC systems
• Conveyor systems
• Direct-on-line (DOL) starters and reversing contactor assemblies (with appropriate accessories)

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