Overview: High-Performance 3-Pole Contactor for Motor Switching
The Siemens 3RT2036-1AF00-1AA0 power contactor is a key component of the SIRIUS modular system, specifically engineered for switching electric motors and other loads up to 22 kW / 400 V (AC-3e/AC-3). This robust, 3-pole contactor is rated for a continuous operating current of 51 A and features a 110 V AC, 50 Hz control supply voltage coil. Designed in the compact Size S2 frame, it ensures high performance and reliability in industrial automation applications.
It includes integrated auxiliary contacts (1 Normally Open (NO) + 1 Normally Closed (NC)) for simplified wiring and is equipped with classic, reliable screw terminals for secure main and control circuit connections. The upright mounting position optimizes space within the control cabinet.
Key Specification
- Product Number: 3RT2036-1AF00-1AA0
- Product Series: SIRIUS 3RT2
- Contactor Type: Power Contactor (for motor switching)
- Poles: 3-pole
- Current Rating (AC-3e/AC-3): 51 A
- Power Rating (AC-3e/AC-3): 22 kW at 400 V
- Control Coil Voltage: 110 V AC, 50 Hz
- Auxiliary Contacts: 1 NO + 1 NC (Integrated)
- Connection Type: Screw Terminal
- Contactor Size: S2
- Mounting Position: Upright
- Operational Voltage (Max): 690 V
Benefit
- Reliable Motor Control: Ideal for starting, stopping, and reversing 3-phase electric motors with a proven AC-3/AC-3e rating.
- Space-Saving Design: Part of the compact SIRIUS modular system (Size S2), allowing for high power density in control cabinets.
- Reduced Complexity: Pre-installed 1 NO + 1 NC auxiliary contacts eliminate the need for an external auxiliary switch block in many standard circuits.
- Secure Connections: Dependable screw terminal technology offers robust, vibration-resistant, and maintenance-friendly wiring.
- Global Standard Compliance: Complies with international standards (e.g., IEC, UL/CSA), making it suitable for worldwide deployment.
- Easy Integration: Seamlessly integrates with other SIRIUS components, such as thermal overload relays and circuit breakers, to form complete load feeders.
Function
The 3RT2036-1AF00-1AA0 functions as an electromechanical switch used to control a large amount of electric power with a small control signal. It is primarily used in AC-3 and AC-3e categories, making it perfect for:
- Switching Squirrel-cage motors (Standard starting and stopping).
- Controlling resistive loads.
- Building starter combinations (e.g., direct-on-line starters) for industrial machinery, HVAC systems, and pump control.
For a comprehensive range of Siemens SIRIUS power contactors and other high-quality industrial automation products, visit turll today.












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