$ 188.37
Phoenix Contact PSR-SPP-24UC/ESM4/3X1/1X2/B safety relay delivers SIL3, Cat.4, PL e protection with dual-channel monitoring for E-stop and safety doors.
The Phoenix Contact PSR-SPP-24UC/ESM4/3X1/1X2/B safety relay is engineered to provide dependable monitoring of emergency stops and safety doors in industrial systems. Supporting applications up to SIL 3, Category 4, and Performance Level e, it safeguards both operators and machinery with precision. Operating on a 24 V DC supply, the relay uses a two-channel design with three independent enabling circuits and an additional signaling path. With quick response times and a compact housing, it is well suited for demanding automation tasks where reliability and safety certification are crucial. Its push-in terminals ensure secure wiring and straightforward installation.
The Phoenix Contact PSR-SPP-24UC/ESM4/3X1/1X2/B combines high safety performance with practical usability, making it an essential choice for modern automation projects. The dual-channel structure ensures redundancy and continuous safety verification, while force-guided contacts provide reliable feedback for machine control systems. Multiple enabling paths allow flexible integration across various circuits, reducing the complexity of system wiring. In daily operation, this relay helps minimize downtime, simplifies compliance with international safety standards, and supports modular safety concepts. Its robust design, LED indicators, and long service life enable consistent performance in harsh environments, translating into greater productivity and lower maintenance costs.
The Phoenix Contact PSR-SPP-24UC/ESM4/3X1/1X2/B stands out because it merges top-tier safety standards with user-focused practicality. Its dual-channel redundancy, three enabling paths, and compact DIN-rail design deliver both security and space efficiency. Built for demanding automation, it doesn’t just protect—it ensures smoother operation, faster compliance, and peace of mind in safety-critical environments.
This safety relay tackles the critical challenge of machine safety by reliably monitoring emergency stops and safety doors. In industrial settings where a single failure could halt production or risk injury, it provides verified redundancy, rapid response, and clear feedback. The result is minimized downtime, fewer safety-related interruptions, and a stronger safeguard for both people and equipment.
| Feature | Details | Benefit |
|---|---|---|
| Nominal Voltage | 24 V DC (±10/-15%) | Reliable power input for control systems |
| Control Channels | 2-channel | Redundancy for higher safety integrity |
| Enabling Paths | 3 enabling, 1 signaling | Flexible integration with multiple circuits |
| Safety Ratings | SIL 3 (IEC 61508/62061), Cat. 4, PL e (ISO 13849) | Meets the highest global safety standards |
| Relay Type | Electromechanical with force-guided contacts | Secure feedback for machine safety |
| Response Time | 20–100 ms | Fast system shutdown in emergencies |
| Release/Recovery Time | 45 ms / 1 s | Quick reset for reduced downtime |
| Mechanical Life | Approx. 10⁷ cycles | Long-lasting durability and cost savings |
| Mounting | DIN rail (horizontal/vertical) | Easy integration into control cabinets |
| Connection Type | Push-in terminal blocks, pluggable | Quick and secure wiring |
| Protection Rating | IP20 housing, install location ≥ IP54 | Ensures safe use in industrial environments |
| Operating Temperature | -20 °C … +55 °C | Suitable for diverse industrial conditions |
| Compliance | CE, cULus Listed, RoHS, REACH | Certified for global applications |
Download Phoenix Contact PSR-SPP-24UC/ESM4/3X1/1X2/B 2963925 Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4017918904760 |
| Traffic Number | DN01 |
| Weight (Net/Gross) | 191.4 g / 192.98 g |
| Country of Origin | Germany (DE) |
In modern assembly lines, workers often interact with robotic arms and high-speed tooling. This safety relay can monitor both emergency stop buttons and protective door switches simultaneously. Its dual-channel design ensures redundancy, so even if one input fails, the system still forces a safe stop. With three enabling paths available, the relay can support several guarded zones at once. This configuration provides operators with secure access during maintenance while maintaining productivity, as the machine only restarts once every gate and stop button has been correctly reset. The result is safer human-machine collaboration without unnecessary downtime.
Large conveyor systems and sheet-metal presses often require physical and optical protection systems. When connected to safety mats and light curtains, this relay immediately disables hazardous motion if a worker steps onto a mat or breaks a light beam. Its fast response time ensures motors and actuators stop before contact with moving parts. The built-in force-guided contacts provide reliable confirmation signals, giving supervisors confidence that circuits are functioning correctly. The ability to connect multiple devices across enabling paths simplifies wiring, helping facilities meet strict safety codes while maintaining efficient material flow.
High-speed packaging machines can be dangerous if not stopped instantly during a fault. By wiring emergency stop switches and interlock sensors to this safety relay, manufacturers ensure precise, immediate shutdown when a problem is detected. The relay’s certified performance levels support compliance with international safety standards, which is critical in regulated industries. LED indicators clearly show operating status, so technicians can quickly identify the cause of the stop and restore production. This feature reduces unnecessary downtime, safeguards personnel, and keeps packaging operations both fast and safe in environments where every second counts.
Robotic welding stations must be tightly controlled to prevent accidents. Here, the relay works with interlocked guard doors and emergency stops to trigger safe torque-off signals to robot drives. The dual-channel inputs verify both sensors independently, preventing hidden faults. When activated, torque is removed from the robot joints instantly, while auxiliary systems such as cooling remain powered. Manual reset logic ensures the cell cannot restart until safety conditions are confirmed. This approach helps operators work safely inside robotic cells during setup or maintenance, while production teams benefit from compliance with advanced safety certifications and reduced risk of injury.
| Category | Model / Name | Part Number | Benefit / Use |
|---|---|---|---|
| Coding Element | CP-MSTB | 1734634 | Ensures correct plug/header orientation; prevents mismatching during installation |
| Coding Section | CR-MSTB | 1734401 | Provides secure coding for header/plug connection; enhances wiring reliability |
| Crimping Tool | CRIMPFOX 6 | 1212034 | For crimping ferrules (0.25–6.0 mm²); ensures proper conductor termination |
| Actuator | PSR-ESS-M0-H110 | 1221757 | Emergency stop actuator with anti-lock collar for modular E-stop switches |
| Module Holder | PSR-ESS-ACC-CB1-C3 | 1221747 | Connects actuator and contact block; supports up to 3 elements with bayonet lock |
| Contact Module | PSR-ESS-ACC-CB1-NC-SC | 1221752 | Force-guided N/C contact module for safety shutdown, up to PL e and SIL 3 |
For expert guidance before placing your order.
Warranty – 1-year warranty for your peace of mind.
Global Shipping – We ship worldwide with secure packaging and reliable delivery.
Technical Support – Contact us for professional after-sales technical assistance.
