$ 263.12
Phoenix Contact PSR-SPP-24UC/ESL4/3X1/1X2/B safety relay ensures SIL3 Cat4 protection with flexible operation, compact design, and long service life.
The Phoenix Contact PSR-SPP-24UC/ESL4/3X1/1X2/B safety relay is designed for use in emergency stop circuits, safety door monitoring, and light grid protection. Supporting both single-channel and dual-channel operation, it provides flexible integration into safety systems across a wide range of machinery. This compact unit operates with a 24 V DC supply and includes three enabling outputs plus one signaling path to ensure reliable switching. Built to meet stringent standards up to SIL 3, Category 4, and Performance Level e, the relay enhances protection while minimizing space in control panels.
The PSR-SPP-24UC/ESL4/3X1/1X2/B combines advanced safety features with practical usability. It offers both automatic and manual reset options, allowing tailored control depending on system requirements. The force-guided relay contacts ensure that faults are quickly detected, improving reliability and uptime. With a mechanical lifespan of over 10 million cycles, the unit reduces maintenance needs and long-term costs. Compact dimensions, push-in terminals, and clear LED indicators simplify installation and servicing. Whether used in industrial automation, factory machinery, or guarding applications, this safety relay delivers a strong balance of compliance, durability, and ease of operation.
Why Phoenix Contact PSR-SPP-24UC/ESL4/3X1/1X2/B?
Because it combines advanced safety standards with ease of use, offering flexible 1- or 2-channel operation, reliable force-guided contacts, and a compact design. This model is built to safeguard people and machinery, while saving control cabinet space and ensuring long service life with over 10 million switching cycles.
What problem does it solve?
It eliminates the risks of unsafe machine operation by instantly disconnecting power in hazardous conditions such as emergency stops, open safety doors, or broken light grids. By ensuring dependable shutdown and monitored restarts, it protects workers, prevents equipment damage, and helps industries maintain compliance with the strictest safety regulations.
| Feature | Details | Benefit |
|---|---|---|
| Safety Standards | SIL 3, Cat. 4, PL e | Meets highest safety requirements for critical applications. |
| Operating Voltage | 24 V DC (±15% / +10%) | Stable operation in industrial control environments. |
| Control Modes | 1- or 2-channel, auto/manual reset | Flexible adaptation to various safety circuit designs. |
| Outputs | 3 enabling paths, 1 signaling path | Reliable system shutdown and monitoring capabilities. |
| Mechanical Life | 10 million switching cycles | Long lifespan reduces replacement and downtime. |
| Connection Type | Push-in pluggable terminal blocks | Fast, tool-free installation and maintenance. |
| Status Indication | Green LEDs for operation and status | Simplifies diagnostics and fault detection. |
| Housing | 22.5 × 112 × 114.5 mm, Yellow (RAL 1018) | Compact design saves panel space and improves visibility. |
| Mounting | DIN rail, vertical/horizontal | Easy integration into standard control cabinets. |
| Protection Class | IP20 (device), IP54 (installation) | Secure use in industrial environments with proper enclosure. |
Download Phoenix Contact PSR-SPP-24UC/ESL4/3X1/1X2/B 2981062 Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4017918927196 |
| Tariff Number | 85371098 |
| Weight | 159.9 g (net), 192.6 g (gross) |
| Country of Origin | Germany (DE) |
In heavy metal pressing operations, operators must have absolute certainty that machinery can be stopped instantly if danger occurs. By integrating this safety relay into a dual-channel emergency stop circuit, the system ensures both channels must confirm before restarting. Its force-guided contacts detect wiring or component faults early, preventing unsafe operation. With a slim housing that fits crowded control panels and selectable reset modes, it becomes a dependable safeguard in environments where fast reaction and worker safety are paramount.
Automated welding cells often use interlocked safety doors to keep workers away during operation. This relay ensures that as soon as a door is opened, the system immediately disables hazardous energy. Its dedicated signaling output alerts operators to unsafe conditions, reducing downtime and improving troubleshooting. With its high certification levels for performance and safety, it satisfies strict industry compliance requirements. Quick push-in connections also simplify installation when assembly lines need frequent modifications.
High-speed packaging machines rely on light curtains to protect workers from moving belts and cutting blades. The safety relay reacts in milliseconds when the light grid is broken, cutting off power to drives before an accident occurs. The monitored start function prevents unintended restarts, ensuring maximum operator security. Its endurance across millions of switching cycles makes it well suited for production lines where interruptions are frequent, helping maintain continuous throughput without compromising safety.
CNC machines use multiple guard doors and enclosures to isolate moving spindles and cutting tools. This safety relay can monitor each interlock, shutting down hazardous motion whenever a guard is opened. Automatic or manual restart options give flexibility depending on shop policies. Its compact size saves space inside machine cabinets, while long service life minimizes maintenance interventions. The clear LED indicators provide quick visual confirmation of status, supporting efficient and safe day-to-day operation.
| Category | Model / Name | Part Number | Benefit |
|---|---|---|---|
| Coding Profile | CP-MSTB | 1734634 | Prevents incorrect plugging by coding connectors, improving safety during wiring. |
| Coding Section | CR-MSTB | 1734401 | Ensures correct alignment of plug and header, reducing wiring errors. |
| Crimping Tool | CRIMPFOX 6 | 1212034 | Professional tool for ferrules (0.25–6.0 mm²), guaranteeing secure terminal connections. |
| Mounting Option | DIN Rail (Standard) | — | Standardized rail mounting ensures quick installation in control cabinets. |
| Alternative Safety Relays | PSRclassic Series | Various | Same family relays for different safety functions and configurations. |
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Warranty – 1-year warranty for your peace of mind.
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