Siemens SIRIUS 3RT2 Power Contactor Size S0, 32A, 15kW, 95-130V AC/DC Coil, Spring Terminal, with Varistor Original Brand New

Overview

The Siemens SIRIUS 3RT2027-2NF30 Power Contactor is a high-performance switching device designed for reliable control of electric motors in industrial automation and low-voltage power distribution. As part of the globally recognized SIRIUS modular system, this compact Size S0 contactor delivers exceptional switching capacity up to 32 A (AC-3e/AC-3) and 15 kW at 400 V. It stands out with its versatile control voltage range of 95-130 V AC/DC and the convenience of modern, spring-loaded terminals for fast, vibration-proof, and maintenance-free wiring.

Key Technical Specification

• Product Number: 3RT2027-2NF30
• Series: SIRIUS 3RT2
• Contactor Size: S0
• Rated Operating Current (AC-3e/AC-3, 400 V): 32 A
• Rated Power (AC-3, 400 V): 15 kW
• Poles: 3-pole main circuit
• Control Voltage (Coil): 95-130 V AC/DC (50/60 Hz)
• Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed) integrated
• Coil Protection: Integrated Varistor
• Terminal Type: Spring-loaded terminal (Spring-type terminals)
• Application: Motor switching, resistive loads, industrial control circuits.

Benefit & Advantages

• Global Versatility: The wide-range $95-130V$ AC/DC control voltage allows for universal use and simplifies inventory management.
• Enhanced Reliability: The integrated varistor protects the coil against voltage peaks, ensuring long-term operational stability and prolonging the contactor’s mechanical life (typ. 10 million switching cycles).
• Reduced Wiring Time: Innovative spring-loaded terminals enable quick, tool-free wiring after ferruling, providing a secure, shock-resistant connection perfect for demanding industrial environments.
• Space-Saving Design: The compact Size S0 design allows for efficient use of panel space.
• Optimized for Motors: Meets $AC-3e/AC-3$ requirements, making it ideal for standard motor starting (Direct-on-Line).
• System Integration: Fully compatible with the SIRIUS modular system, allowing easy combination with overload relays, circuit breakers, and auxiliary blocks.

Function & Application

The Siemens 3RT2027-2NF30 functions as an electromagnetic switch to control the flow of electrical power to a load, primarily three-phase motors.

• Motor Switching: Used for starting, stopping, and reversing motors (e.g., pumps, fans, conveyors) in applications up to $15kW$.
• Switching Resistive Loads: Also suitable for controlling heating elements or lighting circuits.
• Control Circuit Feedback: The integrated 1 NO + 1 NC auxiliary contacts provide essential feedback to the PLC or control system, indicating the contactor’s open or closed status.
• Vibration Resistance: The spring-loaded connection technology makes this contactor a top choice for installations exposed to high vibration (e.g., marine, machine tools).

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