🔹 Siemens SIRIUS 3RT2 Power Contactor – 3RT2025-1NB30 (AC-3 Duty, 3-Pole, 21–28V AC/DC Coil, Screw Terminal, 1NO+1NC Auxiliary)
The Siemens 3RT2025-1NB30 is a robust SIRIUS 3RT2 series power contactor designed for reliable switching of motors and industrial loads under AC-3 duty applications. It is engineered for high performance, long electrical life, and stable operation in demanding industrial environments.
This contactor features a 3-pole configuration with durable screw-type terminals, ensuring secure connections and safe operation in control panels and switchgear systems.
It is equipped with a 21–28V AC/DC coil (NB30 variant), making it suitable for flexible control supply systems used in modern automation and PLC-based installations.
The device includes an integrated auxiliary contact block (1NO + 1NC) and built-in varistor, enhancing protection and control signal reliability during switching operations.
Built on the Siemens SIRIUS modular platform, it supports easy integration with overload relays and accessory modules, offering a compact and scalable solution for industrial motor control systems.
• Genuine Siemens SIRIUS 3RT2 Series Contactor
• Model: 3RT2025-1NB30
• 3-Pole heavy-duty switching design
• AC-3 duty optimized for motor control applications
• 21–28V AC/DC coil (NB30 variant)
• Screw terminal connection for secure wiring
• Integrated auxiliary contacts (1NO + 1NC)
• Built-in varistor for coil protection
• Compact modular design for panel integration
• High mechanical and electrical endurance
• Compatible with Siemens overload relays & accessories
• Suitable for PLC-based automation systems
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2025-1NB30 |
| Product Type | Power Contactor |
| Poles | 3 Pole |
| Utilization Category | AC-3 Duty |
| Rated Current | ~17 A |
| Power Rating | ~7.5 kW @ 400V |
| Coil Voltage | 21–28V AC/DC (NB30) |
| Auxiliary Contacts | 1NO + 1NC |
| Terminal Type | Screw Terminals |
| Mounting Type | Panel / DIN Rail (via accessories) |
| Protection | Integrated varistor |
| Brand | Siemens |
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