The Siemens 3RH2140-1AF008K is a genuine SIRIUS 3RH2 auxiliary contactor relay featuring 4 Normally Open (4NO) mechanically linked contact elements in a compact S00 frame size. Designed for reliable switching, control, and interfacing of auxiliary circuits, it is widely used in industrial automation, machine building, motor control centers, and power distribution systems.
Equipped with an AC control coil and screw terminal connections, the relay provides secure wiring, easy installation, and dependable long-term performance. The mechanically linked contact elements ensure safe and reliable switching by preventing conflicting contact states, making the relay suitable for safety-related control applications. With its compact footprint, high switching endurance, and long mechanical life, the 3RH2140-1AF008K is an ideal solution for PLC interfaces, relay logic circuits, interlocking systems, and industrial control panels. The base 3RH2140-1AF00 model is specified with 4NO contacts, a 110 V AC 50/60 Hz coil, S00 frame size, and screw terminals.
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Part Number | 3RH2140-1AF008K |
| Product Series | SIRIUS 3RH2 |
| Product Type | Auxiliary Contactor Relay |
| Frame Size | S00 |
| Contact Configuration | 4 NO (Normally Open) |
| Contact Type | Mechanically Linked Contact Elements |
| Coil Type | AC Coil |
| Coil Voltage | 110 V AC, 50/60 Hz* |
| Connection Type | Screw Terminals |
| Mounting Type | DIN Rail or Screw Mount |
| Rated Insulation Voltage | 690 V |
| Mechanical Service Life | Up to 30 Million Operating Cycles |
| Degree of Protection | IP20 (Front) |
| Application | Auxiliary Switching, Control & Interlocking Circuits |
| Standard | IEC 60947 |
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