Siemens 3RT2038-1NP34 Power Contactor AC-3 80A, 37kW (400V), 3-Pole, 175-280V AC/DC Coil, Size S2 Original Brand New

Overview: Siemens SIRIUS 3RT2038 Power Contactor

The Siemens 3RT2038-1NP34 Power Contactor is a high-performance switching device from the trusted SIRIUS 3RT2 range, designed for robust motor control applications. This specific model features an $80\text{ A}$ operational current ($37\text{ kW}$ at $400\text{ V}$ AC-3) and is engineered for maximum operational reliability and flexibility in industrial environments.

It stands out with its wide-range $175-280\text{ V AC/DC}$ control coil and includes an integrated varistor for surge suppression, ensuring protection and stability in demanding circuits. The compact Size S2 design and convenient screw terminals make installation and maintenance straightforward.

Key Features and Specifications

• Product Number: 3RT2038-1NP34
• Contactor Type: Power Contactor (AC-3e/AC-3)
• Operational Current (AC-3): $80\text{ A}$
• Motor Power (AC-3): $37\text{ kW}$ at $400\text{ V}$
• Poles: 3-pole main circuit
• Control Coil Voltage: $175-280\text{ V AC/DC}$ (Wide-range operation)
• Integrated Protection: Varistor for coil surge suppression
• Auxiliary Contacts: $2\text{ NO }+2\text{ NC}$ (Pre-assembled, removable auxiliary switch block)
• Terminal Type: Screw terminals
• Contactor Size: S2
• Product Line: Siemens SIRIUS 3RT2

Benefit

This 3RT2038-1NP34 contactor is ideal for applications requiring high switching capacity and reliable motor protection.

• Global Flexibility: The wide-range $175-280\text{ V AC/DC}$ coil simplifies logistics and is perfect for global equipment, as a single unit covers multiple supply voltages.
• Reduced Down Time: Integrated varistor protection absorbs voltage peaks, prolonging the lifespan of the coil and protecting control circuitry.
• Simplified Wiring: $2\text{ NO }+2\text{ NC}$ auxiliary contacts are included and are easily removable, offering immediate status feedback without requiring additional modules.
• Robust Connection: Secure screw terminals provide a reliable connection for the main and control circuits.
• Space Efficiency: The compact Size S2 footprint allows for efficient panel layout and dense installations.

Function

The Siemens 3RT2038-1NP34 functions as an electromechanical switch in industrial control panels. Its primary role is to safely switch $3$-phase AC loads, specifically motors up to $37\text{ kW}$. The wide-range $175-280\text{ V AC/DC}$ coil activates the main contacts when energized, connecting the motor to the power supply. The pre-installed $2\text{ NO }+2\text{ NC}$ auxiliary contacts provide signals for interlocking, status indication, and other control functions. It is rated for performance under both AC-3 (switching motors under load) and the more stringent AC-3e efficiency standard.

For more components and automation products, visit the full Turll catalog today.