Siemens Industrial Controls 3RT2025-1AN20 Contactor

The Siemens 3RT2025-1AN20 is a heavy-duty SIRIUS innovation power contactor designed for high-cycle industrial switching applications. Engineered for Size S0 enclosures, this 3-pole unit provides reliable motor control for systems up to 7.5 kW at 400V. This model operates on a 220V AC 50/60Hz coil, making it a standard replacement for many existing motor starter assemblies. The integrated 1 NO + 1 NC auxiliary contacts allow for immediate status feedback and interlocking without the need for additional snap-on blocks. Built with screw terminals for secure, vibration-resistant wiring, it ensures long-term performance in demanding HVACR environments. The 3RT20251AN20 is climate-resistant and optimized for close-proximity mounting, maintaining high switching frequency and electrical endurance. Technical alignment with IEC 60947-4-1 and UL/CSA certifications ensures this magnetic contactor meets various global electrical standards for industrial machinery and commercial building automation.

• Modular Design: Compact S0 frame size allows for space-saving DIN rail or screw mounting in crowded control panels.
• High Switching Reliability: Designed for AC-3 motor switching and AC-1 resistive loads with minimal contact bounce.
• Integrated Auxiliaries: Factory-installed 1NO and 1NC contacts simplify control circuit wiring and troubleshooting.
• Robust Coil Performance: The 220V AC coil is engineered to handle voltage fluctuations common in industrial power grids.
• SIRIUS System Compatibility: Seamlessly integrates with Siemens thermal or electronic overload relays and link modules.

What is the maximum amperage rating for the 3RT2025-1AN20?
This contactor is rated for 17 Amps under AC-3 utilization categories at 400V, supporting motors up to approximately 10 HP at 460V.

Can I add additional auxiliary contacts to this unit?
Yes, while it includes 1NO/1NC built-in, the SIRIUS platform supports front-mounted or side-mounted auxiliary switch blocks for complex logic requirements.

Is this contactor suitable for 50Hz and 60Hz power systems?
The coil is specifically rated for dual-frequency 50/60Hz operation at 220V AC, providing flexibility for various regional power standards.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.