wieland SA-OR-51-4RK-A Safety Relay
The Wieland SA-OR-51-4RK-A (Order No. R1.180.0080.0) is a premium safety relay module engineered for highly demanding industrial safety circuits. Manufactured in Germany, this robust device provides reliable dual-channel monitoring equipped with K1 and K2 relay outputs and an integrated SBus interface for advanced networking capabilities. It is fully compliant with top-tier international safety standards, achieving SIL 3 (IEC 61508), SIL CL 3 (EN 62061), and PL e / Cat. 4 (EN ISO 13849-1) ratings. Operating efficiently on a 24V DC power supply with a minimal power consumption of 3.2W, the SA-OR-51-4RK-A ensures optimal protection for personnel and machinery in complex automation environments.
Technical Specifications:
- Brand: wieland
- Model: SA-OR-51-4RK-A (Order No. R1.180.0080.0)
- Safety Ratings: SIL 3 (IEC 61508), SIL CL 3 (EN 62061), PL e / Cat. 4 (EN ISO 13849-1)
- Operating Voltage: DC 24 V (class 2)
- Power Consumption: 3.2 W
- Contact Ratings: AC-15: Ue 230 V / Ie 3 A | DC-13: Ue 24 V / Ie 3 A
- Current Limits: Maximum current Imax = 6 A, Sum current Isum = 8 A
- Overvoltage Category: EN 60664-1 (4 kV/2)
- Wiring Specifications: 28-14 AWG Wire Size Only (Use Copper Conductors 60/75°C Only), Tightening Torque 5.25 lbs in
- Certifications: UL LISTED (IND. CONT. EQ. 39RA)
- Country of Origin: Made in Germany

| Brand | wieland |
|---|---|
| Model | SA-OR-51-4RK-A |
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Shipping policy
If you are buying multiple items, please contact us before checking out so we can get you the best combined rate for shipping.
Our default shipping rate is $100, which is enough to cover the cost of most shipments, but it is not our expected shipping rate. Due to the varying weights and sizes of products and customer locations, please contact us with your location and the products you are interested in to get the best current shipping rates.
ENERAL DELIVERY INFORMATION
Orders will be processed and shipping during standard working hours (0830 – 1700 GMT+8) Monday to Friday (excluding Bank Holidays)
On rare occasions, your order may be handled and/or processed on a Saturday. However, we are unable to ship items on weekends, therefore any orders dealt with on the weekend will be send out the next following working day.
The cut-off point for orders to be shipped the same day is 14:00 – please contact us to confirm stock levels before placing your order
Any orders placed after the cut-off will ship the next working day assuming all parts are in stock and ready for dispatch.
All orders:
- must be paid for in full before any goods are dispatched
- require a signature upon delivery. Please ensure delivery can be made to an address where someone will be available to sign for the delivery
- are packaged with great care, ensuring your order and the contents it contains, makes it safely through the delivery network
wieland SA-OR-51-4RK-A Safety Relay
Upgrade your industrial safety systems with the genuine Wieland SA-OR-51-4RK-A Safety Relay (R1.180.0080.0). Features 24V DC operation, dual-channel monitoring, and SIL 3 / PL e Cat. 4 safety ratings for reliable automation protection. Made in Germany.

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