Phoenix Contact PSR-MS35-1NO-24DC-SC Safety Relay SIL 3

Phoenix Contact PSR-MS35-1NO-24DC-SC Safety Relay – Compact SIL 3 Protection

The Phoenix Contact PSR-MS35-1NO-24DC-SC safety relay provides dependable protection for emergency stop buttons and safety doors. It is engineered for up to SIL 3 and Cat. 4/PL e applications, ensuring machines meet stringent international safety standards. With its ultra-slim 6.8 mm width, the relay is ideal where space in the control cabinet is limited. Features such as dual-channel monitoring, cross-circuit detection, and a single enabling current path make it both versatile and highly secure. Operating on 24 V DC, it offers consistent performance for industrial safety requirements.

Built for demanding environments, the PSR-MS35-1NO-24DC-SC combines compact design with high safety integrity. Its fast response and release times help reduce risks by allowing systems to shut down immediately during hazardous situations. The relay’s rugged construction withstands temperatures from -40 °C to +60 °C, vibration, and industrial shocks, ensuring long-term reliability. By saving panel space and simplifying integration, it supports cost-efficient machine design. From automated production lines to material handling systems, this safety relay delivers trusted performance that protects operators while keeping equipment downtime to a minimum.

Why Phoenix Contact PSR-MS35-1NO-24DC-SC?

Because it delivers maximum safety in minimum space. This ultra-slim relay combines SIL 3 and Cat. 4/PL e certification with dual-channel monitoring and cross-circuit detection, all within just 6.8 mm width. It’s the smart choice for engineers who need world-class machine protection without compromising valuable panel real estate.

What Problem Does It Solve?

It eliminates the risk of unsafe machine operation by ensuring reliable emergency stop and safety door monitoring. Designed for harsh industrial conditions, it prevents accidental restarts, short circuits, and wiring faults. By combining compact size, fast response, and high reliability, it safeguards operators and machinery while reducing downtime and compliance headaches.

Key Features & Specifications – Phoenix Contact PSR-MS35-1NO-24DC-SC : 2904953

Download PSR-MS35-1NO-24DC-SC 2904953 Datasheet

Commercial Data – Phoenix Contact PSR-MS35-1NO-24DC-SC : 2904953

The Applications – Phoenix Contact PSR-MS35-1NO-24DC-SC

1. Machine Guarding in High-Speed Press Lines

In metal stamping plants, large presses pose serious risks if safety doors are bypassed. The PSR-MS35-1NO-24DC-SC monitors dual safety door switches so that machinery cannot start until every access point is securely locked. Cross-circuit detection helps identify wiring issues before they become hazards, while fast response times allow presses to stop almost instantly when a guard is opened. The compact 6.8 mm housing ensures it fits inside crowded control cabinets near heavy machinery controls. By combining quick shutdown with compact design, the relay makes machine guarding more reliable and easier to implement in demanding press line environments.

2. Emergency Stop Control for Conveyor Systems

In long conveyor installations such as packaging or material transport lines, emergency stop buttons must guarantee a rapid halt when pressed. The PSR-MS35-1NO-24DC-SC provides dependable two-channel monitoring, so pressing any emergency switch along the line forces the conveyor motors to stop. Its monitored start prevents unexpected restarts, giving maintenance staff additional safety. Designed for 24 V DC operation, it integrates seamlessly into standard industrial power supplies. With its slim build, multiple relays can be installed side-by-side, minimizing the footprint in control panels. This ensures that conveyor systems remain both productive and safe in environments where downtime is costly.

3. Robotic Cell Protection in Manufacturing

Modern robotic welding and handling cells require strict access monitoring to safeguard workers. The PSR-MS35-1NO-24DC-SC connects to interlock switches or light curtains and ensures that the robot can only operate when the area is secure. Dual-channel control enhances reliability, and quick release times help stop robotic arms in milliseconds when someone enters unexpectedly. The relay’s rugged build tolerates high vibration and temperature fluctuations common in production plants, ensuring long service life. By delivering fast shutdown and verified wiring integrity, it helps manufacturers run automated robotic cells safely without compromising throughput.

4. Controlled Access in Clean Room Facilities

Pharmaceutical and electronics clean rooms demand precise safety and contamination control. With the PSR-MS35-1NO-24DC-SC, access doors can be interlocked so that critical equipment only runs when all doors are properly secured. Manual or monitored start functions prevent systems from operating until switches are reset, reducing the risk of unsafe restarts. The relay’s cross-circuit detection avoids hidden wiring faults that could undermine safety. Its narrow design saves space in compact clean room panels, which often have strict layout restrictions. This combination of compact size, reliability, and safety integrity makes it a strong choice for controlled access applications in sensitive environments.

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