Siemens 3RT2025-1AB00-1AA0 SIRIUS Power Contactor, 17A, 7.5kW, 400V, 3-Pole, 24V AC, Size S0, Screw Terminal Original Brand New

Overview

The Siemens 3RT2025-1AB00-1AA0 SIRIUS Power Contactor is a robust and reliable 3-pole switching device from the SIRIUS 3RT2 series, designed for controlling motors up to 7.5 kW (at $400\text{ V}$) and general resistive loads. With a rated operational current of 17 A for AC-3e/AC-3 motor switching, this compact Size S0 contactor offers high performance and a long mechanical life.

It features a 24 V AC, 50 Hz control coil and comes equipped with 1 NO (Normally Open) + 1 NC (Normally Closed) auxiliary contacts for signal and interlocking functions, utilizing secure screw terminals for all connections.

Key Features & Technical Specifications

• Product: Power Contactor (Motor Contactor)
• Manufacturer: Siemens
• Series: SIRIUS 3RT2
• Article Number (MPN): 3RT2025-1AB00-1AA0
• Size: S0
• Main Poles: 3-pole
• Rated Operational Current (Ie​): $17\text{ A}$ (AC-3e/AC-3 at $400\text{ V}$)
• Rated Power (Pe​): $7.5\text{ kW}$ (at $400\text{ V}$ for AC-3/AC-3e)
• Control Coil Voltage: $24\text{ V AC}$ at $50\text{ Hz}$
• Auxiliary Contacts: $1\text{ NO}+1\text{ NC}$ integrated
• Connection Type: Screw Terminal
• Mounting Position: Upright (standard)
• Max Main Circuit Voltage: $690\text{ V}$ (Rated Insulation Voltage)
• Mechanical Service Life: Up to 10 million operating cycles

Benefit

1. High Reliability: Part of the trusted Siemens SIRIUS family, ensuring consistent performance and a long operational lifespan.
2. Space-Saving Design: The compact Size S0 form factor allows for efficient panel layout and installation in limited spaces.
3. Versatile Application: Suitable for demanding applications like motor control (AC-3/AC-3e) and switching general loads (AC-1).
4. Integrated Auxiliary Contacts: The built-in $1\text{ NO}+1\text{ NC}$ contacts simplify wiring for control circuits, signaling, and interlocks.
5. Secure Wiring: Robust screw terminals ensure reliable and maintenance-friendly connections for both main and control circuits.
6. Global Compliance: Meets IEC, EN, and other international standards for industrial control gear.

Function and Application

The Siemens 3RT2025-1AB00-1AA0 contactor functions as an electrically operated switch, primarily for frequent starting and stopping of electric motors. It is commonly used in:

• Motor Control: Switching 3-phase asynchronous motors in machinery, pumps, fans, and conveyor systems.
• Industrial Automation: Integration into load feeders, motor starters (direct-on-line), and control panels.
• Resistive Loads: Switching heating, lighting, and other non-motor loads (up to $40\text{ A}$ AC-1 at $400\text{ V}$).

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