Siemens Contactor, screw terminal, 2NO+NC, 22kW, 24VAC Part number 3RT2036-1AB04

Product Overview

The Siemens SIRIUS 3RT2036-1AB04 is a three-pole power contactor (frame size S2) designed for industrial motor control and switching of three-phase loads. It supports an AC-3 rating of 51 A at 400 V and motor power up to 22 kW at 400 V. The unit includes a 24 V AC (50 Hz) control coil and is equipped with 2 NO + 2 NC auxiliary contacts for control and indication functions.

Key Features

• Rated Operational Current (AC-3, 400 V): 51 A
• Motor Power Rating (AC-3, 400 V): 22 kW
• Control Coil Voltage: 24 V AC, 50 Hz
• Auxiliary Contacts: 2 NO + 2 NC (instantaneous)
• Frame Size: S2 – robust, industrial-grade construction
• Insulation & Surge: Ui 690 V AC; surge withstand 6 kV
• Mechanical Durability: ~10,000,000 operations (typical)
• Ambient Operating Temperature: –25 °C to +60 °C
• Mounting: DIN-rail or screw mounting

Technical Specifications

• Product Series: SIRIUS 3RT2 Power Contactors
• Main Poles: 3 (three-phase switching)
• Rated Operational Current (AC-1, 400 V): 70 A
• Rated Operational Current (AC-3, 690 V): 24 A
• Control Coil Power: Pick-up ≈ 190 VA; holding ≈ 16 VA
• Connections: Screw terminals (main and auxiliary circuits)
• Conductor Cross-Section (main): up to 50 mm² (typical)
• Typical Power Loss: ~12 W at rated current
• Operating / Storage Temp.: –25 °C…+60 °C / –55 °C…+80 °C
• Country of Origin: Germany

Compliance & Certifications

• Protection Class: IP20 (finger-safe front)
• Safety: Mirror contact in accordance with IEC 60947-4-1
• Standards: IEC/EN 60947 series (contactors & auxiliary circuits)
• RoHS: Compliant with Siemens hazardous-substance policy
• CE Marking: Conforms to applicable EU directives

Applications

Ideal for industrial automation systems, motor control centers, and machine-building applications. Common uses include switching pumps, conveyors, compressors, and machine-tool drives where robust performance and long service life are required.