$ 166.06
Phoenix Contact PSR-SCP-24UC/ESA4/3X1/1X2/B safety relay for emergency stop and safety door monitoring. Certified up to SIL 3 and PL e.
The Phoenix Contact PSR-SCP-24UC/ESA4/3X1/1X2/B safety relay is built to safeguard machines and operators through dependable emergency stop and safety door monitoring. Engineered to meet SIL 3 and Category 4, Performance Level e requirements, it provides a trusted safety layer for critical automation systems. The unit integrates two-channel control, three independent enabling paths, and one signaling output for flexible system design. Its slim 22.5 mm housing allows easy installation on DIN rails, while fast reaction times and durable electromechanical contacts ensure consistent performance. This relay is an ideal solution for industries seeking high-level compliance with international safety standards.
Designed for industrial environments, the PSR-SCP-24UC/ESA4/3X1/1X2/B combines emergency shutdown functions with safety gate supervision in a single compact unit. It supports both manual restart and automatic start-up, making it adaptable for different operating conditions. Clear LED indicators help maintenance teams quickly check status, reducing downtime during inspections. The rugged construction withstands vibration, shock, and wide temperature variations, offering reliability even in demanding applications. By ensuring safe stop functions and minimizing potential hazards, this relay not only protects operators but also extends machine availability—helping factories maintain productivity without compromising safety.
Why Phoenix Contact PSR-SCP-24UC/ESA4/3X1/1X2/B?
The PSR-SCP-24UC/ESA4/3X1/1X2/B is the smart choice for industries that demand uncompromising machine safety. Its compact design integrates emergency stop and safety door monitoring into one device, reducing panel space and wiring complexity. By supporting both manual reset and automatic start functions, it adapts seamlessly to different operational needs. Built with robust, force-guided relay contacts and LED status indicators, it delivers clear feedback, long service life, and assured compliance with SIL 3 and PL e safety standards.
What problem does it solve?
This safety relay addresses one of the most critical challenges in industrial automation: preventing accidents and unplanned machine operation. Without a reliable safety device, operators face risks from unexpected startups, unsafe access points, or failure to shut down in emergencies. The PSR-SCP-24UC/ESA4/3X1/1X2/B eliminates these risks by combining rapid emergency stop control with dependable safety door supervision. It ensures machinery only runs under safe conditions, reducing downtime, avoiding costly incidents, and giving operators confidence that their working environment is protected.
| Feature | Details | Benefit |
|---|---|---|
| Safety Ratings | SIL 3, Cat. 4, PL e | Highest level of functional safety for critical machinery |
| Control Type | 2-channel operation | Redundant protection for maximum reliability |
| Outputs | 3 enabling paths + 1 signaling path | Supports flexible integration with automation systems |
| Operating Voltage | 24 V DC (-15% / +10%) | Standard supply range for industrial environments |
| Response Time | ~150 ms | Fast reaction to emergency stop signals |
| Housing Width | 22.5 mm | Compact design saves valuable panel space |
| Mounting Type | DIN rail, vertical or horizontal | Simple and versatile installation |
| Indicators | LED status and voltage display | Clear operational feedback for quick diagnostics |
| Environmental Range | –20 °C to +55 °C, IP20 | Reliable performance under demanding conditions |
| Mechanical Life | ~10⁷ cycles | Long service life, reducing replacement frequency |
Download Phoenix Contact PSR-SCP-24UC/ESA4/3X1/1X2/B (2963763) Datasheet
| Commercial Data | Details |
|---|---|
| GTIN (EAN/UPC) | 4017918878085 |
| Traffic Number | DNA113 |
| Weight (incl. packaging) | 182 g |
| Weight (net) | 161.12 g |
| Country of Origin | Germany (DE) |
In heavy metalworking, presses must stop instantly when an operator triggers an emergency button. The safety relay ensures power is cut without delay and prevents restart until conditions are verified safe. Its dual-channel monitoring detects wiring faults, ensuring redundancy in case one path fails. This level of reliability is critical to protect operators from severe injury while maintaining machine compliance with safety standards.
Industrial robots often work in enclosed areas where access must be controlled. By linking guard doors to the safety relay, machines halt automatically if a door is opened during operation. The device’s multiple enabling circuits and internal checks provide assurance that even small wiring errors or tampering are detected. This prevents unsafe machine movement and allows maintenance teams to safely access robotic areas.
High-speed packaging systems often rely on light barriers to protect operators at open access points. The safety relay connects directly to these sensors, shutting down motion if the protective beam is interrupted. Its ability to supervise circuit health ensures that a sensor fault cannot go unnoticed. This capability helps balance productivity with operator safety, especially where frequent access is needed during production.
Long conveyor installations require many emergency stop points for operators stationed along the line. The safety relay accepts inputs from multiple stop switches and instantly halts the entire system when triggered. Its fault detection and feedback functions help pinpoint wiring or switch issues quickly, reducing troubleshooting time. This setup provides both broad safety coverage and operational efficiency in large-scale handling systems.
| Category | Model | Part Number | Benefit |
|---|---|---|---|
| Coding Profile | CP-MSTB | 1734634 | Prevents misconnection, ensures correct module alignment |
| Coding Section | CR-MSTB | 1734401 | Provides keyed connections, increases wiring safety |
| Crimping Tool | CRIMPFOX 6 | 1212034 | Ensures secure wire termination and long-lasting connections |
| Emergency Stop Actuator | PSR-ESS-M0-H110 | 1221757 | Enables reliable emergency stop activation in modular setups |
| Module Holder | PSR-ESS-ACC-CB1-C3 | 1221747 | Connects actuator and contact block, easy installation |
| Contact Module | PSR-ESS-ACC-CB1-NC-SC | 1221752 | Provides safety-related shutdown, rated up to SIL 3 / PL e |
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.
