Siemens 3RT2025-1AN24 Power Contactor, 17A, 7.5kW, 220V AC Coil, S0 Original Brand New

Overview: Siemens SIRIUS 3RT2025-1AN24 Power Contactor

The Siemens 3RT2025-1AN24 is a high-performance SIRIUS 3RT2 power contactor designed for reliable switching of electric motors and resistive loads. This robust 3-pole contactor is rated for 17 A (AC-3e/AC-3) and up to 7.5 kW at 400 V. It features a 220 V AC control voltage (50/60 Hz) and comes pre-equipped with a versatile removable auxiliary switch block offering 2 Normally Open (NO) + 2 Normally Closed (NC) auxiliary contacts.

Part of the flexible SIRIUS modular system, the 3RT2025-1AN24 in Size S0 (Standard) ensures high contact reliability and simplified wiring thanks to its secure screw terminals. It is engineered for global use, is climate-resistant, and is the current generation replacement for older 3RT1 contactors, offering both electrical and dimensional compatibility (with accessories).

Key Features & Technical Specification

• Product Type: Power Contactor (SIRIUS 3RT2 Series)
• Contactor Size: S0
• Poles: 3-pole main circuit
• Rated Operational Current (AC-3e/AC-3): 17 A (at 400 V)
• Rated Operational Power (AC-3e/AC-3): 7.5 kW (at 400 V)
• Control Voltage (Coil): 220 V AC (50/60 Hz)
• Auxiliary Contacts: Integrated $2\text{ NO}+2\text{ NC}$ (removable auxiliary switch)
• Main Circuit Connection: Screw Terminals
• Insulation Voltage (Ui​): 690 V
• Surge Voltage Resistance (Uimp​): 6 kV
• Protection Class: IP20 (Finger-safe protection)
• Mechanical Service Life: Up to 10 million operating cycles
• Standards: $\text{IEC},\text{UL}/\text{CSA}$ approved, $\text{IE3}/\text{IE4}$ ready

Benefit

1. High Reliability & Performance: Dependable switching for motor loads up to 7.5 kW, ensuring long-term system stability.
2. Simplified Installation: Features user-friendly screw terminals for secure and straightforward wiring.
3. Versatile Signaling: Includes an integrated $2\text{ NO}+2\text{ NC}$ auxiliary switch, saving installation time and reducing component count.
4. Modular Flexibility (SIRIUS System): Fully compatible with a wide range of SIRIUS accessories (overload relays, function modules, etc.) for easy expansion and combination building (e.g., reversing starters).
5. Global Compliance: $\text{IEC}$ and $\text{UL}/\text{CSA}$ certifications for worldwide application.

Function

The Siemens 3RT2025-1AN24 functions as an electromechanical switching device (contactor) primarily used to switch electric motors and high-current resistive loads. When the 220 V AC control coil is energized, the three main power contacts close, connecting the load to the power supply. The integrated $2\text{ NO}+2\text{ NC}$ auxiliary contacts provide signals for control circuits, interlocking, and status indication.

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