The Siemens 3RT2327-1AF00 is a reliable SIRIUS 3RT23 Series power contactor designed for switching non-inductive and slightly inductive loads in industrial control and power distribution systems. This 4-pole contactor features 4 Normally Open (4NO) main contacts and comes equipped with 1 NO + 1 NC integrated auxiliary contacts, providing flexible control and monitoring functionality in a compact design. It operates with a 110V AC, 50 Hz coil and utilizes secure screw terminal connections for dependable installation and maintenance.
Rated at 50A AC-1 at 400V, the 3RT2327-1AF00 delivers dependable switching performance for heating systems, lighting circuits, power distribution applications, industrial automation equipment, and other resistive load applications. Its compact S0 frame size allows efficient integration into motor control centers, switchboards, and industrial control panels.
The contactor includes 4 NO main contacts and 1 NO + 1 NC auxiliary contacts as standard, enabling signaling, interlocking, status indication, and control circuit integration without requiring additional auxiliary modules. This helps reduce panel space requirements and simplifies wiring.
Designed according to Siemens SIRIUS quality standards, the 3RT2327-1AF00 features a rated insulation voltage of 690V, surge voltage resistance of 6kV, and a mechanical service life of up to 10 million operating cycles, ensuring long-term reliability in demanding industrial environments. The device also provides IP20 protection on the front and terminal areas for enhanced operational safety.
Its screw-terminal connection system ensures secure conductor termination and simplified maintenance. The contactor can be installed in industrial automation systems, HVAC equipment, process control applications, OEM machinery, building management systems, and electrical distribution panels where reliable power switching is required.
As part of the trusted Siemens SIRIUS contactor family, the 3RT2327-1AF00 offers dependable switching performance, robust construction, and seamless compatibility with Siemens overload relays, motor starters, and industrial automation products.
| Specification | Details |
|---|---|
| Product Name | Power Contactor |
| Brand | Siemens |
| Series | SIRIUS 3RT23 |
| Model Number | 3RT2327-1AF00 |
| SKU | 3RT2327-1AF00 |
| Product Type | Power Contactor |
| Utilization Category | AC-1 |
| Rated Operational Current (AC-1) | 50 A |
| Number of Poles | 4 Pole |
| Main Contacts | 4 NO |
| Auxiliary Contacts | 1 NO + 1 NC |
| Coil Voltage | 110 V AC |
| Frequency | 50 Hz |
| Frame Size | S0 |
| Terminal Type | Screw Terminals |
| Rated Insulation Voltage (Ui) | 690 V |
| Surge Voltage Resistance | 6 kV |
| Protection Class | IP20 |
| Mechanical Life | 10 Million Operations |
| Mounting Type | DIN Rail / Panel Mount |
| Operating Temperature | -25°C to +60°C |
| Product Family | Siemens SIRIUS Contactors |
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