Siemens 3RT2037-1AP04-3MA0 Contactor 65A, 30kW, 230V AC, S2 Original Brand New

Overview

The Siemens SIRIUS 3RT2037-1AP04-3MA0 Power Contactor is a high-performance, 3-pole switching device designed for motor control and demanding AC applications. Part of the robust SIRIUS 3RT2 series, this Size S2 contactor is built to meet the requirements of modern industrial control systems, offering high operational reliability and a long mechanical service life.

It features a permanently mounted (captive) auxiliary switch block, making it ideal for safety-related applications that require a defined mirror contact configuration, such as those governed by SUVA standards.

Key Specification

• Product Type: Power Contactor (AC switching)
• Series: SIRIUS 3RT2 (Size S2)
• Manufacturer Part No.: 3RT2037-1AP04-3MA0
• Rated Operational Current (Ie​) (AC-3/AC-3e): 65 A at 400 V
• Rated Operational Power (Pe​): 30 kW at 400 V
• Number of Poles: 3-pole
• Coil Control Voltage (Us​): 230 V AC, 50 Hz
• Auxiliary Contacts: 2 NO (Normally Open) + 2 NC (Normally Closed) captive auxiliary switch
• Termination Type: Screw terminals
• Mounting: Chassis Mount, DIN Rail
• Protection Class: IP20 (on the front)
• IEC Standard: Compliant with IEC 60947

Benefit

1. High Reliability for Motor Control: Rated at 65A (Ie​) and 30 kW (at 400V), this contactor provides reliable switching for powerful 3-phase AC motors and resistive loads.
2. Enhanced Safety Features: Includes a captive 2 NO + 2 NC auxiliary switch block, often required for safety applications (e.g., SUVA-certified safety circuits), ensuring the auxiliary contacts are an integral, non-removable part of the device.
3. Versatile System Integration: As a SIRIUS 3RT2 component, it is perfectly suited for use in load feeders and easily combines with other SIRIUS devices like overload relays and circuit breakers.
4. Durable and Long-lasting: Engineered for a high mechanical service life, reducing maintenance and replacement costs in industrial environments.
5. Easy Installation: Features robust screw terminals for secure main and control circuit wiring.

Function

The Siemens 3RT2037-1AP04-3MA0 Contactor is designed to electrically switch an electrical power circuit. It primarily functions to control the start, stop, and direction of three-phase AC motors. When the 230V AC, 50 Hz coil is energized, the 3 main Normally Open (NO) contacts close, allowing power to flow to the motor. The integrated 2 NO and 2 NC auxiliary contacts provide signaling and interlocking functions within the control circuit.

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