Phoenix Contact PSR-PS40-1NO-1DO-24DC-SC Coupling Relay

Phoenix Contact PSR-PS40-1NO-1DO-24DC-SC Coupling Relay for SIL 3 Applications

The Phoenix Contact PSR-PS40-1NO-1DO-24DC-SC coupling relay is a compact safety relay engineered for high- and low-demand SIL 3 applications. With a housing width of just 6.8 mm, it enables reliable coupling of digital output signals from safety controllers to connected devices such as actuators or valves. Its force-guided contacts and integrated signal contact provide dependable performance while simplifying functional testing. Designed for industrial use, this relay ensures secure isolation, rapid switching, and long service life, making it ideal for integration into modern process and factory automation systems.

The PSR-PS40-1NO-1DO-24DC-SC coupling relay combines advanced safety functions with practical advantages in real-world operation. It supports fast start-up, stable release times, and integrated test pulse filtering, which reduces wear and extends product longevity. Engineers benefit from the easy DIN rail installation, robust screw terminal connections, and international certifications that allow deployment in a wide range of global projects. Its ability to maintain safety integrity under challenging conditions improves system uptime, while the compact size saves valuable cabinet space. This makes it a cost-effective and reliable choice for industrial automation, process control, and energy management systems.

Why Phoenix Contact PSR-PS40-1NO-1DO-24DC-SC?
Because it delivers maximum safety in minimum space. This compact 6.8 mm relay provides SIL 3 compliance, force-guided contacts, and long service life, ensuring reliable signal coupling in critical industrial environments. It’s engineered for efficiency, reducing downtime, simplifying proof testing, and saving cabinet space—all while meeting global certification standards.

What problem does it solve?
It tackles the challenge of safe and dependable signal transfer between safety controllers and field devices. By isolating outputs, filtering test pulses, and providing secure switching, it prevents dangerous failures and system interruptions. The result is enhanced operational safety, reduced maintenance complexity, and greater confidence in high-demand industrial applications.

Key Features & Specifications – Phoenix Contact PSR-PS40-1NO-1DO-24DC-SC : 2700398

Download Phoenix Contact PSR-PS40-1NO-1DO-24DC-SC 2700398 Datasheet

Commercial Information – Phoenix Contact PSR-PS40-1NO-1DO-24DC-SC : 2700398

The Applications of Phoenix Contact PSR-PS40-1NO-1DO-24DC-SC

1. Emergency Valve Shutoff in Chemical Plants

In chemical production, safety valves must react immediately during abnormal pressure or leak events. The PSR-PS40-1NO-1DO-24DC-SC couples the controller signal to the valve actuator, ensuring isolation between low-voltage logic and high-current field devices. Its force-guided contacts provide clear status feedback, making proof testing easier for operators. With built-in pulse filtering, nuisance trips are minimized, reducing downtime. Compact housing allows more relays to be fitted into safety cabinets without expanding panel size, offering reliable protection for both personnel and equipment in hazardous plant areas.

2. Guard Door Interlocks on Packaging Machinery

Automated packaging lines rely on safety interlocks to keep operators protected when accessing moving components. The PSR-PS40-1NO-1DO-24DC-SC enables safe shutdown by linking the safety controller to the guard door actuator. If a door is opened, the relay ensures power is cut, preventing accidental start-up. The integrated signal output provides real-time monitoring, helping maintenance teams verify system health. Its narrow 6.8 mm width is particularly valuable in packaging machines with crowded control panels. This design enhances compliance with safety standards while maintaining high machine availability.

3. Overload and Motion Control in Cranes

Heavy lifting cranes used in ports and manufacturing require dependable monitoring of loads and travel paths. The PSR-PS40-1NO-1DO-24DC-SC connects safety logic to motor drives, isolating control electronics from large inductive loads. If the controller detects overload or unsafe movement, the relay interrupts power instantly. Its robust mechanical endurance ensures continuous service, even under frequent cycling. With operating capability across wide temperatures, the relay performs reliably in outdoor or unconditioned environments. This application improves operational safety while extending the life of costly lifting equipment.

4. Blade Pitch Control in Wind Turbines

Wind turbines rely on pitch systems to adjust blade angles during storms or grid faults. The PSR-PS40-1NO-1DO-24DC-SC transmits commands from the safety controller to pitch actuators, safely separating sensitive logic circuits from high-current motor lines. Its high switching capacity and surge protection make it suitable for inductive loads, ensuring rapid and secure actuation. Force-guided contacts allow system monitoring and predictive maintenance scheduling, reducing unexpected downtime. Compact size supports installation in space-constrained nacelle cabinets, delivering a combination of safety, efficiency, and durability critical to renewable energy systems.

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