Description
Allen-Bradley 81000-866-02-R
Reliable Allen-Bradley safety relay for Category 4 machine safety circuits, ensuring rapid and dependable emergency stop and guard door monitoring.
| Brand | Allen-Bradley |
| Model | 81000-866-02-R |
| Voltage | 24V DC |
| Country of Origin | USA |
| Weight | 0.25 kg |
| Dimensions | 99 x 22.5 x 114 mm |
| Warranty | 6 months |
| Certifications | CE, UL 508, TUV, cULus |
| SKU / MPN | 81000-866-02-R |
| What’s in the box | Safety relay unit, installation guide, wiring diagram |
| Safety Category | Category 4 / PLe (per EN ISO 13849-1) |
| Supply Voltage | 24V DC |
| Safety Contacts | 3 NO + 1 NC |
| Response Time | < 25 ms |
| Operating Temperature | -10 to +55 °C |
| Mounting | DIN Rail (35 mm) |
Key benefits: High safety integrity up to PLe, compact DIN rail form factor, fast response time, dual-channel monitoring, integrated diagnostics, globally certified for industrial use
Typical applications: Emergency stop circuits, safety gate monitoring, light curtain interfacing, robotic cell guarding, conveyor safety, machine tool protection
Lifecycle: Active product, supported by Rockwell Automation with long-term availability
Our Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don't worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
Shop with confidence knowing we are offering very competitive pricing!
Orders usually ship the same day
Rest assured your order will arrive as soon as possible knowing we usually ship the same day.
Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.
Run Business
Building a reputation for quality products at a reasonable price. Our inventory is far more extensive than what can be represented on our web site, so please call one of our knowledgeable salesmen with your specific needs.








Michael T. –
Industrial camera clarity is impressive. Shipped promptly with all accessories.