Siemens 3RT2036-1AF04 SIRIUS Power Contactor, 51A, 22kW, 3-Pole, 110V AC Coil, Size S2 Original Brand New

Overview

The Siemens 3RT2036-1AF04 Power Contactor from the SIRIUS 3RT2 series is a high-performance, 3-pole switching device engineered for controlling three-phase motors and other high-current loads.

This robust Size S2 contactor is rated for 51 A operational current (AC-3e/AC-3) and a 22 kW motor power at 400 V. It features a reliable 110 V AC, 50 Hz control coil and comes equipped with an integrated 2 NO + 2 NC auxiliary switch block for seamless integration into control circuits. The main and auxiliary circuits are secured via screw terminals. Its compact, modular design is part of the SIRIUS industrial controls system, ensuring compatibility and ease of installation in industrial control cabinets.

Key Technical Specifications

• Product ID: 3RT2036-1AF04
• Contactor Series: Siemens SIRIUS 3RT2
• Operational Current (AC-3e/AC-3): 51 A (at 400 V)
• Operational Power (AC-3e/AC-3): 22 kW (at 400 V)
• Poles: 3-pole
• Control Voltage (Coil): 110 V AC, 50 Hz
• Auxiliary Contacts: 2 NO + 2 NC (Removable Auxiliary Switch Block)
• Connection Type: Screw Terminal
• Contactor Size: S2
• Compatibility: Designed for switching IE2, IE3, and IE4 motors.

Benefit

• High Reliability: Part of the proven Siemens SIRIUS modular system, offering excellent contact reliability and a long mechanical service life (up to 10 million operating cycles).
• Space-Saving Design: Its compact size (S2) allows for high packing density and efficient use of space in control cabinets.
• Simplified Wiring: Features user-friendly screw terminals for secure and straightforward connection of main and control circuits.
• Flexibility & Expansion: Comes with an integrated, removable auxiliary switch block (2 NO + 2 NC), providing immediate feedback and control points, with options for further modular expansion.
• Global Standard Compliance: Manufactured in Germany and complies with international standards like IEC 60947.

Function

The 3RT2036-1AF04 acts as an electrically controlled switch, primarily for switching and controlling three-phase electrical motors, heating systems, and other large resistive loads. When the 110 V AC coil is energized, the main power contacts close, allowing current (up to 51 A) to flow to the connected load. The integrated auxiliary contacts provide instant feedback on the contactor’s status to the control system (e.g., PLC or relays).

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