Phoenix Contact PSR-PC40-2NO-1DO-24DC-SP Coupling Relay

Phoenix Contact PSR-PC40-2NO-1DO-24DC-SP Coupling Relay – Compact SIL 3 Safety Solution

The Phoenix Contact PSR-PC40-2NO-1DO-24DC-SP coupling relay is a high-integrity safety component designed for SIL 3 applications in modern industrial automation. It acts as a reliable interface between digital outputs and connected I/O devices, ensuring electrical isolation and dependable signal transfer. With a slim 12.5 mm housing, it saves valuable space in control cabinets while delivering safe shutdown performance. Built for critical safety circuits, it integrates a pulse filter and allows simple proof testing according to IEC standards. Its robust construction and international approvals make it a trusted choice for demanding environments where compactness and certified safety are key.

Engineered for durability and flexibility, the PSR-PC40-2NO-1DO-24DC-SP improves system reliability by linking failsafe controllers to actuators such as valves or contactors. Its force-guided contacts and corrosion-protected PCB provide consistent operation in challenging industrial conditions, while the internal lock mechanism supports safe operation and reduces unexpected downtime. LED indicators simplify diagnostics, and the device supports both manual and automatic monitoring, giving operators full control. Thanks to its vibration resistance, wide temperature range, and long service life, this relay reduces maintenance demands and ensures dependable protection in industries like oil & gas, chemical processing, and manufacturing automation.

Why Phoenix Contact PSR-PC40-2NO-1DO-24DC-SP?

The Phoenix Contact PSR-PC40-2NO-1DO-24DC-SP is chosen by engineers who need maximum safety in minimum space. With SIL 3 compliance, slim design, and built-in test pulse filtering, it delivers confidence in every shutdown command. Its rugged build, diagnostic LEDs, and international certifications make it a future-ready solution for industries that cannot afford compromise on safety or reliability.

What Problem Does It Solve?

This coupling relay eliminates the risk of unsafe signal transmission between failsafe controllers and I/O devices. In critical applications where power isolation and dependable shut-off are mandatory, it ensures every safety command reaches its target reliably. By filtering unwanted test pulses, preventing false trips, and reducing downtime, it solves the challenge of combining compact design with uncompromised functional safety.

Key Features & Specifications – Phoenix Contact PSR-PC40-2NO-1DO-24DC-SP : 2700589

Download Phoenix Contact PSR-PC40-2NO-1DO-24DC-SP 2700589 Datasheet

Commercial Data – Phoenix Contact PSR-PC40-2NO-1DO-24DC-SP : 2700589

The Applications

1. Safety Shutdown in Chemical Processing Plants

In chemical plants, processes such as mixing or pressurized pumping must be brought to a safe state quickly if conditions go outside limits. The PSR-PC40-2NO-1DO-24DC-SP acts as the bridge between safety controllers and devices like valves or contactors. Its dual enabling current paths with force-guided contacts provide redundancy, ensuring shutdown even if one path fails. The integrated pulse filter prevents false trips from controller test signals, keeping operations stable. With its slim 12.5 mm profile, it fits easily into compact cabinets, allowing multiple safety channels to be added without expanding enclosure size. This combination makes it highly suitable for critical chemical safety loops.

2. Safety Interface for Packaging Automation

Modern packaging lines in food and pharmaceutical facilities rely on rapid yet safe machine control. E-stops, interlocks, or light curtains feed into a safety controller, but actuators still require secure isolation. The PSR-PC40 provides this by safely coupling signals between the controller and actuators. Its self-monitoring lock mechanism ensures contacts cannot remain closed in the event of an internal fault. Clear LED displays assist technicians with fast diagnostics during maintenance. Thanks to its narrow width, many relays can be lined up in crowded cabinets, making it ideal for high-density packaging systems where space is at a premium yet safety cannot be compromised.

3. Hazardous Zone Safety in Oil & Gas Facilities

Oil and gas installations often operate in classified areas where explosive gases may be present. The PSR-PC40-2NO-1DO-24DC-SP, designed and certified for demanding industrial conditions, can be integrated into shutdown loops to control valves, motors, or emergency cut-off devices. Its reinforced insulation withstands high surge voltages, reducing the risk of dangerous failures. The unit’s vibration resistance and wide temperature tolerance mean it continues to perform reliably on offshore rigs or desert pipelines. Compact DIN-rail mounting makes it practical for installation inside remote field panels, cutting down on long cable runs. By combining resilience and SIL 3 certification, it provides a dependable safety link in hazardous energy systems.

4. Safety Control in Robotic Assembly Cells

Robotic cells in automotive or electronics assembly must guarantee worker safety while maintaining productivity. The PSR-PC40 ensures that signals from interlock switches, light curtains, or emergency stops are correctly transmitted to actuators such as robot brakes or guard locks. With dual channels and force-guided contacts, it delivers the assurance that machinery will stop safely under both high and low demand. Its compact form allows placement in localized safety boxes right next to the robotic system, shortening wiring and minimizing latency. Maintenance teams benefit from simple LED diagnostics, reducing troubleshooting time. By combining compactness, durability, and certified safety, it helps robotic production lines run both efficiently and securely.

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