Siemens SIRIUS 3RT2025-1AD00 Power Contactor, 17A, 7.5kW (400V), 42V AC Coil, Size S0, Screw Terminal Original Brand New

Overview

The Siemens 3RT2025-1AD00 Power Contactor from the SIRIUS 3RT2 family is a high-performance 3-pole switching device engineered for controlling three-phase electric motors and other loads. This compact Size S0 contactor offers exceptional reliability and a long mechanical service life, making it an essential component for industrial control and automation applications. Rated for an operational current of 17 A (AC-3e/AC-3) and a power output of 7.5 kW at 400 V, it features a 42 V AC, 50 Hz control coil and comes equipped with integrated 1 NO + 1 NC auxiliary contacts for versatile circuit integration. Installation is straightforward with robust screw terminals.

Key Technical Specifications

• Product Number: 3RT2025-1AD00
• Manufacturer: Siemens
• Series: SIRIUS 3RT2
• Contactor Size: S0
• Poles: 3-pole
• Operational Current (Ie​): 17 A (AC-3e/AC-3, up to 400V)
• Operational Power (Pe​): 7.5 kW at 400 V
• Coil Voltage: 42 V AC, 50 Hz
• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC) integrated
• Connection Type: Screw Terminal
• Insulation Voltage (Ui​): 690 V
• Utilization Category: AC-3e / AC-3 (suitable for IE3/IE4 motor switching)

Benefits & Features

• Reliable Motor Control: Designed to safely and reliably switch three-phase asynchronous motors up to 7.5 kW, meeting the demands of the latest IE3/IE4 motor efficiency standards (AC-3e).
• Space-Saving Design: The compact Size S0 footprint allows for high packing density within control cabinets, optimizing panel space.
• Integrated Versatility: Features built-in 1 NO + 1 NC auxiliary contacts, reducing the need for external components and simplifying wiring.
• Secure & Robust Connections: High-quality screw terminals ensure a reliable and secure electrical connection, even in demanding industrial environments.
• Long-Lasting Operation: Offers a high mechanical service life, ensuring dependable, long-term performance and reduced maintenance costs.
• Global Standard: Part of the globally established Siemens SIRIUS modular system, ensuring seamless integration with other Siemens control gear (e.g., overload relays, circuit breakers).

The Siemens 3RT2025-1AD00 is primarily used as a power contactor in low-voltage industrial control and automation systems.

Function

It is an electromechanical switch used to safely make and break power circuits, specifically for starting, stopping, and reversing electric motors (in conjunction with a reversing contactor assembly). It is also suitable for switching heating loads, lighting circuits, and capacitor banks (AC-1 loads up to 40 A).

Application

• Motor Starters (Direct-on-line, Reversing)
• Pumps and Compressors
• Ventilation and Air Conditioning (HVAC) Systems
• Conveyor Systems
• General industrial machinery and plant engineering

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