$ 172.50
Phoenix Contact PSR-SPP-24DC/ESP4/2X1/1X2 safety relay delivers SIL 3, PL e protection for emergency stop and safety door monitoring in compact form.
The Phoenix Contact PSR-SPP-24DC/ESP4/2X1/1X2 safety relay is engineered for critical safety functions such as emergency stop circuits and protective door monitoring. Built to meet SIL 3 and Performance Level e standards, it offers secure isolation and rapid reaction times in both frequent and infrequent demand applications. Its slim 22.5 mm design conserves valuable control cabinet space while maintaining high functional integrity. Approved under multiple international safety regulations, this relay is an ideal choice for industrial sectors where preventing dangerous movements and ensuring worker protection are essential.
The PSR-SPP-24DC/ESP4/2X1/1X2 safety relay is equipped with dual enabling current paths and an additional signaling output for straightforward integration into safety systems. Its optimized design minimizes inrush current, making it highly compatible with modern failsafe controllers. Maintenance teams appreciate its push-in wiring terminals for fast setup, LED indicators for immediate status checks, and durable construction that reduces replacement needs. In production plants, process industries, or power environments, the device helps ensure that machines shut down safely when required, boosting both compliance and operational confidence while reducing costly downtime.
The PSR-SPP-24DC/ESP4/2X1/1X2 stands out because it combines SIL 3 safety integrity with compact design and effortless integration. Unlike standard relays, it’s optimized for high-demand emergency stops and protective door monitoring, offering both reliability and space efficiency. Its advanced compatibility with failsafe controllers ensures seamless adoption in modern automation systems. For engineers who value efficiency, safety, and compliance in one device, this relay is a trusted solution that reduces complexity while enhancing system resilience.
Industrial environments demand reliable protection against hazardous machine movements, yet downtime from unreliable safety devices can cripple productivity. The PSR-SPP-24DC/ESP4/2X1/1X2 solves this by providing dependable emergency shutdowns and safe isolation in critical processes. It mitigates risks of injury, equipment damage, and regulatory non-compliance. By ensuring rapid response and long service life, it helps manufacturers achieve both safety and efficiency, giving operators confidence that their systems are safeguarded against unexpected faults or dangerous conditions.
| Feature | Details | Benefit |
|---|---|---|
| Safety Standards | SIL 3 (IEC 61508, EN IEC 62061), Cat. 4/PL e (ISO 13849-1) | Ensures compliance with strict global safety regulations |
| Control Type | 1-channel with safe isolation | Simple and secure monitoring setup |
| Enabling Paths | 2 NO safety outputs | Provides redundancy for higher safety integrity |
| Signal Contact | 1 NC signaling path | Offers feedback for system diagnostics |
| Response Times | Typical 60 ms start, 20 ms release | Fast safety response for critical processes |
| Connection Technology | Push-in terminals, pluggable | Faster installation and maintenance |
| Housing Width | 22.5 mm | Saves space in control panels |
| Approvals | CE, cULus, DNV, Functional Safety certification | Globally accepted for industrial applications |
| Operating Conditions | -20 °C to +55 °C, IP20 | Reliable in demanding environments |
| Service Life | ~10⁷ mechanical cycles | Long-lasting, reduces replacement frequency |
Download PSR-SPP-24DC/ESP4/2X1/1X2 2981017 Datasheet
| Commercial Attribute | Value |
|---|---|
| GTIN Number | 4017918911072 |
| Traffic Number (Customs Tariff Code) | 85371098 |
| Weight | 182.5 g (incl. packing) / 199.6 g (net) |
| Country of Origin | Germany (DE) |
In an auto assembly plant, robotic welding stations often require guarded enclosures with interlocked doors. If a maintenance door is inadvertently opened, the safety relay immediately disables robot motion. The dual enabling paths provide redundancy, and the fast 20 ms release ensures motion is halted before personnel can enter. The push-in terminals speed up field replacement, and the slim 22.5 mm width allows compact integration into the robot’s control cabinet.
On high-speed packaging machines, multiple E-stop buttons along the line must instantly halt conveyors and presses. The PSR-SPP’s ability to operate in both low- and high-demand modes ensures dependable emergency shutdowns. Its built-in diagnostics via LED status indicators allow maintenance staff to quickly locate faults, minimizing downtime. The force-guided contacts ensure safe monitoring of the relay itself, ensuring the system fails to safe in case of internal faults.
In a beverage plant with filling, capping, and labeling stations, operators open covers for cleaning or inspection. Each access cover is fitted with safety switches monitored by the relay. The compact relay fits inside dense machine control panels, while its approved certifications (SIL 3 / PL e) help the plant satisfy regulatory audits. Because of the inrush current reduction feature, it can interface reliably with failsafe controllers and avoid nuisance shutdowns due to startup transients.
In process environments like chemical reactors, safety requirements include shutting off burners or pumps in hazardous conditions. The safety relay monitors emergency shutdown circuits and valve status feedback. Its safe isolation feature ensures separation between control logic and power side. The signaling contact provides feedback to the control room about the safety state. The high mechanical life (≈10⁷ cycles) assures long-term reliability in often-activated safety operations.
| Category | Model / Part Name | Part Number | Benefit |
|---|---|---|---|
| Accessory – Coding Profile | CP-MSTB | 1734634 | Prevents mismating of connectors; red insulating material ensures correct slot positioning. |
| Accessory – Coding Section | CR-MSTB | 1734401 | Provides secure keying between plug and header; increases installation safety. |
| Tool – Crimping Pliers | CRIMPFOX 6 | 1212034 | Designed for ferrules 0.25–6.0 mm²; ensures reliable wiring for the push-in terminals. |
| Safety Relay Family | PSRclassic Series | Various models | Offers compatible safety relays with different channel and contact configurations. |
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Warranty – 1-year warranty for your peace of mind.
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