$ 44.62
Compact Phoenix Contact PSR-SCF-24UC/URM/2X21 coupling relay ensures safe switching, force-guided contacts, SIL 1 certified, and long service life.
The Phoenix Contact PSR-SCF-24UC/URM/2X21 coupling relay is designed to deliver dependable safety in industrial automation systems. With its slim 17.5 mm housing and force-guided contacts, it ensures secure signal monitoring and controlled shutdown of machinery. Operating on 24 V AC/DC, the relay provides two changeover contacts and supports both single-channel and dual-channel operation. Certified up to SIL 1 and performance level c, it meets modern functional safety requirements. Its screw terminal connections and quick response time help create compact, efficient, and highly reliable control solutions where safety is non-negotiable.
The Phoenix Contact PSR-SCF-24UC/URM/2X21 is built for applications that demand reliable fault detection and consistent shutdown performance. Its force-guided design ensures accurate feedback, minimizing undetected errors in critical circuits. A built-in test contact streamlines proof testing, making safety verification faster and easier. Engineered for long service life with up to ten million mechanical cycles, it reduces replacement costs and downtime. The DIN-rail mounting format saves cabinet space, while the integrated LED indicator provides immediate status visibility for quick troubleshooting. Together, these features make it a practical and cost-effective choice for maintaining safe and efficient industrial operations.
The PSR-SCF-24UC/URM/2X21 stands out as a compact yet powerful safety relay, engineered with force-guided contacts that guarantee accurate switching feedback. Its slim design fits easily into crowded control panels, while its dual-channel capability provides flexibility for varied safety architectures. Built for reliability and certified to SIL 1 and PL c, it delivers peace of mind in demanding industrial environments.
In many automation systems, detecting contact failures and ensuring a safe shutdown is critical. The PSR-SCF-24UC/URM/2X21 solves this by offering force-guided contacts and integrated test functions, preventing hidden faults from compromising safety. It bridges the gap between control and safety circuits, reducing downtime, simplifying proof testing, and safeguarding both equipment and operators in mission-critical applications.
| Feature | Details | Benefit |
|---|---|---|
| Rated Control Voltage | 24 V AC/DC ±10% | Flexible operation with both AC and DC supply |
| Relay Outputs | 2 changeover contacts (force-guided) | Reliable switching and accurate fault detection |
| Safety Certifications | SIL 1 (IEC 61508), PL c (EN ISO 13849-1) | Meets functional safety requirements for industrial systems |
| Mechanical Service Life | Up to 10 million cycles | Long-lasting performance reduces replacement costs |
| Width | 17.5 mm (DIN-rail mountable) | Space-saving design for compact control cabinets |
| Operating Temperature | -20 °C to +50 °C | Reliable performance in diverse environments |
| LED Indicator | Yellow status LED | Quick visual feedback simplifies troubleshooting |
| Connection Type | Screw terminals, 0.2–2.5 mm² | Secure and easy wiring for various conductor sizes |
| Housing Material | Polycarbonate, green (RAL 6021) | Durable and robust for industrial conditions |
Download PSR-SCF-24UC/URM/2X21 – 2981363 Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4017918946906 |
| Customs Tariff Number | 85364900 |
| Weight (per piece, excl. packing) | 56.7 g |
| Country of Origin | Germany |
In robotic welding stations, sparks and high temperatures present significant risks for operators. By using a safety relay with force-guided contacts, signals from light curtains or guard door switches can trigger an immediate shutdown of power. The PSR-SCF-24UC/URM/2X21 ensures reliable monitoring by showing if a contact fails to switch correctly. Its compact width and clear LED indication allow integration into confined panels while helping maintenance teams quickly verify safe operation, reducing downtime and ensuring compliance with safety requirements.
Fast-moving packaging lines require dependable emergency stop functions to protect both staff and equipment. The PSR-SCF-24UC/URM/2X21 enables E-stop buttons to be wired in a way that guarantees power is cut immediately while its monitoring contact checks for failures in the switching process. With two changeover outputs and a robust mechanical life, it delivers consistent safety performance even under frequent stop-start cycles. This ensures machine operators can react swiftly to jams or misfeeds, minimizing production losses.
Metal presses and cutting equipment demand reliable guard door interlocks to prevent access during operation. When the guard is opened, the PSR-SCF-24UC/URM/2X21 relay responds instantly by cutting the power supply, while its force-guided mechanism confirms that contacts have changed state correctly. This reduces the risk of undetected failures that could endanger workers. Its space-saving design makes it ideal for installation in press control cabinets where multiple safety relays are needed but panel space is limited.
Food and beverage conveyor systems include multiple access doors for cleaning and inspection. The PSR-SCF-24UC/URM/2X21 can link these interlock switches into a monitored safety circuit. If any contact sticks or malfunctions, the force-guided design ensures the fault is detected before operations continue. Its certified safety level and high cycle life provide long-term reliability, essential in plants running continuous shifts. By simplifying proof testing and maintenance checks, it helps facilities maintain safety compliance while minimizing interruptions in production flow.
| Category | Model / Name | Part Number | How It Complements |
|---|---|---|---|
| Accessory | CRIMPFOX 6 Crimping Pliers | 1212034 | Ensures reliable conductor connection by properly crimping ferrules for secure screw terminal wiring. |
| Ferrules (various sizes) | 3200055 | Used with screw connections to ensure safe and durable conductor terminations. | |
| Complementary Safety Relay | PSR-MXF24UC/3X1/1X2 | 2981015 | Higher channel version for complex safety architectures requiring additional monitored contacts. |
| PSR-ESAM4-24UC/ESAM4/2X1 | 2981210 | Provides expanded emergency stop monitoring functions, useful when multiple E-stops must be connected. | |
| Mounting & Installation | DIN Rail, standard 35 mm | 1201733 | Enables quick and secure mounting of the coupling relay inside control cabinets. |
| Testing & Service Tool | Screwdriver SZF 1-0,6X3,5 | 1204517 | Precision tool for tightening/loosening relay screw terminals during installation and maintenance. |
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.
