Siemens 3RT2038-1NF34 Power Contactor AC-3e/AC-3, 80A, 37kW, 2NO+2NC Aux Contacts Original Brand New

Overview: Siemens 3RT2038-1NF34 Power Contactor

The Siemens 3RT2038-1NF34 is a high-performance 3-pole power contactor designed for efficient and reliable switching of AC motors and other resistive loads. As part of the SIRIUS 3RT2 series, this size S2 contactor is built for demanding industrial applications, offering a robust solution for motor control, switching operations, and electrical circuit management.

Engineered with a broad operating voltage range of 83-155 V AC/DC, it provides flexibility for various control systems. The integrated varistor protects against voltage spikes, ensuring the longevity and reliability of the contactor and connected equipment. The inclusion of two normally open (2 NO) and two normally closed (2 NC) auxiliary contacts allows for complex control circuits and comprehensive feedback, while the convenient screw terminals ensure a secure and straightforward installation.

Key Features & Technical Specification

• Product Number: 3RT2038-1NF34
• Contactor Type: Power Contactor, 3-pole
• Rated Operating Current (AC-3e/AC-3): 80 A
• Rated Power (AC-3e/AC-3): 37 kW at 400 V
• Coil Voltage: 83-155 V AC/DC (50/60 Hz)
• Integrated Protection: Varistor for surge suppression
• Auxiliary Contacts: 2 NO + 2 NC
• Terminal Type: Screw Terminal
• Frame Size: S2
• Auxiliary Switch: Removable for easy configuration

Benefit

• High Performance: With an 80A current rating and 37kW power capacity, this contactor is well-suited for a wide range of industrial motors and heavy-duty applications.
• Reliability & Durability: The integrated varistor protects the coil and control circuit from damaging voltage spikes, extending the product’s lifespan and reducing maintenance costs.
• Versatile Control: The 2 NO + 2 NC auxiliary contacts provide ample options for interlocking, status feedback, and complex control schemes.
• Flexible Application: The wide voltage range (83-155 V AC/DC) makes it adaptable to various control power supplies without the need for additional components.
• Easy Installation: Screw terminals offer a simple, secure, and reliable method for wiring connections, minimizing installation time.
• Modular Design: As part of the SIRIUS modular system, it is compatible with a wide range of accessories and can be easily integrated into existing control panels.

Function

The Siemens 3RT2038-1NF34 serves as an electrical switch for controlling a circuit by an electromagnetic coil. When the coil is energized by the 83-155 V AC/DC control voltage, the main contacts close, allowing power to flow to the connected load, typically an electric motor. When the coil is de-energized, a spring returns the contacts to their open position, de-energizing the load.

The auxiliary contacts switch simultaneously, providing feedback on the contactor’s status to other parts of the control system. The removable auxiliary switch allows for easy maintenance or replacement without disturbing the main power wiring.

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