Phoenix Contact PSR-MS25-1NO-1DO-24DC-SC Safety Relay

Phoenix Contact PSR-MS25-1NO-1DO-24DC-SC Safety Relay – Slim and Reliable Protection

The Phoenix Contact PSR-MS25-1NO-1DO-24DC-SC safety relay is a compact device engineered for emergency stop and safety door monitoring. Designed to meet stringent standards up to SIL 3, Category 4, and Performance Level e, it delivers high reliability in safeguarding people and equipment. With its exceptionally slim 6.8 mm housing, the relay saves valuable panel space while maintaining robust safety control. Operating on a 24 V DC supply, it provides one enabling current path along with a signal output, ensuring dependable system shutdown when needed. This relay is the right choice for compact installations that demand advanced safety compliance.

The Phoenix Contact PSR-MS25-1NO-1DO-24DC-SC combines force-guided contacts with fast switching times to provide effective protection in industrial applications. Its compact design not only simplifies cabinet layouts but also reduces wiring effort during installation. Built to operate in temperatures ranging from -40 °C to +60 °C, the relay is highly dependable even in demanding environments. Industries benefit from its ability to enable secure emergency stops and monitor protective doors, which directly reduces downtime and improves worker safety. For machine builders and operators, the PSR-MS25 ensures international safety compliance while offering a long service life and minimal maintenance needs.

Why Phoenix Contact PSR-MS25-1NO-1DO-24DC-SC?
Because it delivers powerful safety control in a housing just 6.8 mm wide. This compact relay ensures space efficiency without compromising protection, giving machine builders a reliable and certified solution that meets SIL 3 and PL e standards. It’s the perfect balance of safety, durability, and design flexibility.

What problem does it solve?
It eliminates the risks of unsafe machine operation by providing dependable emergency stop and safety door monitoring. With fast response, force-guided contacts, and international compliance, it helps manufacturers protect workers, reduce downtime, and meet legal requirements for machine safety—while saving space and simplifying cabinet design.

Key Features & Specifications – Phoenix Contact PSR-MS25-1NO-1DO-24DC-SC: Article 2904951

Download PSR-MS25-1NO-1DO-24DC-SC (2904951) Datasheet

Commercial Data – Phoenix Contact PSR-MS25-1NO-1DO-24DC-SC: Article 2904951

The Applications

1. Automated Assembly Line Emergency Stops

In modern robotic assembly environments, multiple work zones demand quick and reliable shutdown systems. The PSR-MS25 relay links directly to emergency-stop buttons, ensuring instant power cut-off whenever a hazard is detected. Its monitored restart function means production cannot resume until an operator verifies conditions are safe. With rapid response times and SIL 3 certification, it provides robust protection without slowing down the overall pace of manufacturing.

2. Packaging Machine Safety Door Control

High-speed packaging machines rely on safety doors to protect operators from moving parts. By wiring door interlocks into the PSR-MS25, any attempt to open the enclosure results in an immediate stop. The slim housing makes integration easy, even in crowded panels, while force-guided contacts guarantee safe shutdown every cycle. This combination of compact design and high reliability minimizes downtime while maintaining strong operator safety.

3. Press Brake Guarding in Metal Fabrication

Metal presses require precise safety measures to avoid accidents when operators load materials. The PSR-MS25 can monitor guard switches, ensuring the press brake only activates when the safety shield is secured. Its enforced manual reset prevents unintentional restarts, and its wide temperature tolerance makes it dependable in tough workshop conditions. Built for millions of switching cycles, it provides consistent safety performance across heavy-duty production tasks.

4. Conveyor System Zone Protection

Long conveyor systems often span multiple zones where workers may need to intervene. By integrating PSR-MS25 relays across different sections, each emergency button or interlock instantly halts the respective zone. The digital signal output allows supervisors to monitor status in real time, improving diagnostics and reducing downtime. Its narrow profile simplifies panel design, while its international safety compliance ensures peace of mind for operators and maintenance teams.

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