$ 297.16
Boost machine safety with Phoenix Contact PSR-SPP-24DC/URD3/4X1/2X2/3 relay. Compact, SIL 3 certified, space-saving, and ideal for secure shutdown control.
The Phoenix Contact PSR-SPP-24DC/URD3/4X1/2X2/3 safety relay is a compact, 1-channel contact extension module engineered for demanding industrial safety tasks. It integrates four normally open contacts, one normally closed contact, and an adjustable off-delay function ranging from 0.3 to 3 seconds. With compliance to Category 3, Performance Level e, and SIL 3 functional safety standards, it delivers a reliable safeguard for automation systems. Designed with push-in connections and slim housing, the relay streamlines installation while maintaining consistent protection for machines and operators.
This safety relay is built to extend safety outputs with assured reliability. Its force-guided electromechanical contacts ensure secure switching, even under high operating demands. The adjustable release time supports controlled machine stops, minimizing risk and equipment stress. At only 22.5 mm wide, it helps save control cabinet space while providing clear LED indicators for quick operational checks. By using this relay, businesses enhance compliance, improve uptime, and increase operator safety. From automated production lines to packaging or assembly systems, it provides a strong balance of efficiency and dependable safety.
Because it combines compact design with advanced safety performance. The PSR-SPP-24DC/URD3/4X1/2X2/3 offers certified SIL 3 and PL e reliability, force-guided contacts, and adjustable off-delay for smooth machine stops. It saves cabinet space, speeds installation with push-in terminals, and keeps operators safe while ensuring your production runs with fewer interruptions.
It eliminates the risk of unsafe machine states by providing secure signal extension and controlled shutdowns. In many automation systems, safety outputs are limited or prone to faults. This relay solves the challenge by reliably expanding safety contacts, delivering fault-tolerant performance, and giving operators confidence that machines will stop safely every time.
| Feature | Details | Benefit |
|---|---|---|
| Contact Configuration | 4 N/O, 1 N/C, 1 confirmation path | Provides flexible safety contact expansion |
| Adjustable Off-Delay | 0.3 … 3 s | Supports controlled stop sequences for safer operations |
| Safety Standards | Cat. 3 / PL e (EN ISO 13849), SIL 3 (IEC 61508, EN IEC 62061) | Meets highest safety integrity levels |
| Rated Input Voltage | 24 V DC | Common industrial control voltage for easy integration |
| Response/Release Times | 20 ms response, 0.3–3 s release | Quick activation with customizable delay |
| Operating Temperature | –20 °C to +55 °C | Reliable in harsh industrial environments |
| Mounting | DIN rail, 22.5 mm width | Space-saving and easy installation |
| Connection Type | Push-in terminals, pluggable | Fast, tool-free wiring and maintenance |
| Housing Color/Material | Yellow (RAL 1018), PA | Clear safety identification and durable housing |
| LED Indicators | Green LEDs for status and power | Simplifies monitoring and diagnostics |
Download PSR-SPP-24DC/URD3/4X1/2X2/3 (2981745) Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4046356103688 |
| Customs Tariff Number | 85371098 |
| Weight (net / with packing) | 197.1 g / 235.2 g |
| Country of Origin | Germany (DE) |
High-speed packaging equipment requires reliable control of conveyors, sealing stations, and cutters. By integrating this safety relay, multiple guard doors and light barriers can be extended into a single safety loop. Its force-guided contacts ensure no unexpected restart if one circuit fails. The off-delay feature allows moving belts to decelerate before full stop, preventing product damage and mechanical wear. With compact housing, the relay easily fits into crowded cabinets, while LED status indicators simplify troubleshooting during production.
Robotic welding cells demand maximum operator safety when doors or hatches are opened. This safety relay enables robust monitoring of access points, ensuring immediate power cutoff to actuators when a guard is breached. Its Category 3 / PL e certification meets strict automotive industry standards. The adjustable delay time allows for controlled cooling before power disconnection, reducing stress on robotic arms. Space-saving DIN-rail mounting and plug-in connections help engineers integrate it seamlessly within compact robot controllers.
In food manufacturing, machines must stop safely before operators can perform cleaning or maintenance. The relay monitors access panels and prevents unintentional restarts until all doors are confirmed closed. Its adjustable timing allows pumps and mixers to stop in sequence, protecting equipment from sudden shock. With resistance to fluctuating temperatures and vibrations, the relay ensures dependable performance in wash-down environments. Clear LED signals provide quick confirmation that machinery is fully safe for personnel entry.
Large injection molding facilities often connect multiple machines in one safety network. This relay provides the essential extension of contacts to individual stations, ensuring each unit shuts down independently without affecting the entire system. Its secure switching capability guarantees proper power isolation during tool changes or part removal. Diagnostic LEDs help maintenance teams quickly identify which station triggered the safety response. The slim design reduces wiring complexity and simplifies expansion when additional molding units are added.
| Category | Model | Part Number | Description | Benefit |
|---|---|---|---|---|
| Accessory | PSR-TBUS | 2890425 | DIN rail bus connector for safety switching devices | Enables power and signal distribution between multiple safety modules |
| PSR-TBUS-TP | 2981716 | Blind plug for PSR-TBUS connectors | Protects unused bus slots and ensures safe operation | |
| PSR-TBUS (1 piece) | 1326060 | Single-piece DIN rail bus connector | Provides modular, easy-to-expand safety relay installations | |
| Tool | CRIMPFOX 6 | 1212034 | Crimping pliers for ferrules (0.25–6.0 mm²) | Ensures reliable wire terminations for push-in connections |
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Warranty – 1-year warranty for your peace of mind.
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