Siemens 3RT2038-3NB30-0CC0 Power Contactor, 80A, 37kW, AC/DC Coil, Spring Terminals, S2, SIRIUS Original Brand New

Overview

The Siemens SIRIUS 3RT2038-3NB30-0CC0 is a high-performance, 3-pole power contactor from the SIRIUS Innovations line, designed for reliably switching motors and industrial loads up to 80 A and 37 kW at 400 V (AC-3e/AC-3). This size S2 contactor is built for modern industrial environments, featuring a wide-range 20-33 V AC/DC control voltage coil with an integrated varistor for surge suppression, ensuring maximum reliability and coil protection.

It stands out with a robust combination of connection types: screw terminals for the main circuit (power connections) and convenient spring-loaded terminals for the control and auxiliary circuits (coils and signaling), making installation fast and vibration-proof. As a communication-capable device, it is ready for integration into modern, digitalized control systems.

Benefits & Advantages

• High Reliability: Integrated varistor provides superior coil protection against voltage surges, reducing downtime and extending service life.
• Flexible Connectivity: Combines the secure, high-current capacity of screw terminals for the main circuit with the fast, maintenance-free, vibration-resistant connection of spring-loaded terminals for the control circuit.
• Global Application: Wide-range AC/DC control voltage (20-33 V) simplifies stocking and allows for use in various global power systems.
• Digital Ready: Communication-capable design enables integration into IO-Link or AS-Interface systems via function modules (sold separately), supporting Industry 4.0 applications.
• Space-Saving: Compact, efficient S2 size for switching high currents up to 80 A.

Function & Application

The 3RT2038-3NB30-0CC0 is primarily used in industrial control systems to switch 3-phase AC motors (AC-3e/AC-3) and other non-inductive or slightly inductive loads. Its robust design is ideal for:

• Starting and stopping standard 3-phase motors.
• Controlling resistive heating loads.
• Switching power distribution circuits.
• Serving as the main element in motor starter configurations (direct-on-line starters, reversing starters, etc.).

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