Siemens 3RT2037-3AF06 Power Contactor, 65A, 30kW, 110V AC, S2 Original Brand New

Overview

The Siemens 3RT2037-3AF06 is a high-performance, 3-pole power contactor from the SIRIUS 3RT20 series, engineered for switching electric motors up to $30\text{ kW}/400\text{ V}$ (AC-3e/AC-3). This robust Size S2 contactor is rated for $65\text{ A}$ (at $400\text{ V}$ AC-3) and is designed for reliable operation in industrial control applications. It features a $110\text{ V AC},50\text{ Hz}$ control voltage for the coil and includes an integrated $2\text{ NO}+2\text{ NC}$ auxiliary switch configuration for advanced signaling and interlocking.

Key Features

• High Power Rating: Suitable for motor switching applications up to $30\text{ kW}$ at $400\text{ V}$.
• Operational Current: Rated operational current (Ie​) of $65\text{ A}$ for AC-3e/AC-3.
• Coil Voltage: $110\text{ V AC},50\text{ Hz}$ control supply voltage.
• Auxiliary Contacts: Built-in $2\text{ NO}+2\text{ NC}$ auxiliary contacts, configured as a lateral auxiliary switch, offering flexibility for control circuits.
• Terminal Technology: Features screw terminals for the main power circuit and reliable, time-saving spring-loaded terminals for the control and auxiliary circuits.
• Compact Size: Size S2 frame allows for efficient panel design and space utilization.
• Series: Part of the globally recognized and reliable Siemens SIRIUS 3RT20 contactor range.

Benefit

• Reliable Motor Control: Designed for the demanding requirements of motor switching (AC-3e/AC-3), ensuring long mechanical and electrical service life.
• Flexible Connectivity: The combination of screw terminals for high-current main circuits and fast-wiring spring-loaded terminals for control circuits simplifies installation and maintenance.
• Enhanced Safety & Signaling: The $2\text{ NO}+2\text{ NC}$ auxiliary contacts provide ample options for interlocking, status feedback, and safety circuits.
• Global Standard: As a Siemens SIRIUS product, it meets international standards, making it suitable for worldwide deployment.

Function

The 3RT2037-3AF06 acts as an electrically controlled switch, primarily used to remotely make or break a power circuit for electric motors and other loads. When the $110\text{ V AC}$ coil is energized, the main contacts close, supplying power to the motor. Simultaneously, the auxiliary contacts change state, providing feedback to the control system. The $65\text{ A}$ current rating and $30\text{ kW}$ power capacity make it suitable for medium-to-large industrial motor applications.

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