$ 217.81
Compact Phoenix Contact PSR-MC40-3NO-1DO-24DC-SP safety relay ensures SIL3, PL e protection for emergency stops, doors, and light grids.
The Phoenix Contact PSR-MC40-3NO-1DO-24DC-SP safety relay is engineered to protect personnel and machines in demanding industrial environments. It is designed for applications such as emergency stops, safety doors, and light grids, reaching performance levels up to SIL 3, Category 4, and PL e. Despite its advanced functionality, it requires only 12.5 mm of installation width, saving valuable panel space. With three enabling current paths and one monitoring output, it supports both one- and two-channel configurations, and offers flexibility with automatic or manually supervised restart. This combination ensures reliable safety monitoring in compact form.
Built for modern automation systems, the PSR-MC40-3NO-1DO-24DC-SP goes beyond compact size by offering real-world reliability and ease of use. Its force-guided relay contacts guarantee dependable switching in critical circuits, reducing risks of malfunction. Push-in connection technology makes wiring straightforward, cutting installation time and minimizing errors. The integrated LED indicators simplify diagnostics by providing clear status information at a glance. Operating between –40 °C and +55 °C, it delivers stable performance in both cold and hot environments. Whether used in factory lines, machine tools, or automated safety systems, this safety relay helps maintain compliance, reduce downtime, and enhance overall plant productivity.
The PSR-MC40-3NO-1DO-24DC-SP stands out because it combines advanced safety integrity with a slim design that saves space in control cabinets. It allows engineers to achieve top-tier safety levels without compromising on flexibility or ease of installation. With its durability, quick wiring, and high reliability, it is the ideal choice for modern safety-critical automation systems.
This safety relay eliminates the complexity of safeguarding machines by integrating emergency stop, safety door, and light grid functions into one device. It solves the problem of bulky installations and uncertain safety performance by delivering compact size, certified reliability, and simple wiring. Operators benefit from reduced downtime, clearer diagnostics, and compliance with stringent international safety standards.
| Feature | Details | Benefit |
|---|---|---|
| Operating Voltage | 24 V DC (20.4–26.4 V DC) | Stable operation within industrial control systems |
| Safety Standards | Up to SIL 3, Cat. 4, PL e | Meets highest international safety certifications |
| Relay Outputs | 3 enabling current paths, 1 digital output | Reliable machine shutdown and monitoring |
| Housing Width | 12.5 mm | Saves valuable control cabinet space |
| Start Modes | Automatic or manual monitored | Flexible integration into various safety concepts |
| Contacts | Force-guided, AgSnO₂ material | Ensures dependable switching under load |
| Response Time | <175 ms | Fast reaction for emergency situations |
| Temperature Range | –40 °C to +55 °C | Reliable performance in harsh environments |
| Connection Type | Push-in terminal block, pluggable | Speeds up wiring and reduces downtime |
| Status Indicators | Multiple green LEDs | Clear visual diagnostics for fast troubleshooting |
| Mounting | DIN rail, vertical or horizontal | Easy integration into standard panels |
| Approvals | CE, cULus, Functional Safety certified | Compliance with global regulations |
Download PSR-MC40-3NO-1DO-24DC-SP 2700570 Datasheet
| Commercial Attribute | Value |
|---|---|
| GTIN Number | 4046356912532 |
| Customs Tariff Number | 85371098 |
| Weight (Excluding Packing) | 139.89 g |
| Country of Origin | Germany (DE) |
On a fast-moving assembly line, worker safety depends on stopping machines the moment a hazard occurs. The PSR-MC40 relay processes dual emergency-stop inputs and quickly disconnects power through its enabling paths. Its slim 12.5 mm width allows integration in crowded control panels, while its stop category 0 shutdown ensures immediate reaction. Clear LED status indicators shorten troubleshooting time, enabling production to resume with minimal disruption.
In CNC machining environments, access doors must remain locked during active cutting. The relay manages two-channel door switch signals and guarantees the machine cannot restart unless doors are properly closed. Its manual monitored restart mode ensures operators must confirm system readiness before reactivation. The robust, force-guided contacts provide long-term reliability, even in operations with frequent tool changes and high cycle demands.
Modern packaging machines often use light curtains to protect workers near moving belts or sealers. When the light barrier is interrupted, the relay instantly disables machine power. Its digital signal output can also feed safety status back to controllers for better system coordination. With its wide operating temperature range, the relay performs reliably in both cold-storage packaging and warm production environments, while push-in connections make setup quick and efficient.
In chemical plants or food processing facilities, the relay acts as a local safeguard, linking emergency switches or safety sensors with higher-level safety PLCs. By handling immediate shutdowns directly, it reduces system response times while still providing status signals to centralized control. The compact housing frees cabinet space, and compliance up to SIL 3 and PL e ensures operators meet international safety standards without excessive complexity.
| Category | Model / Accessory | Part Number | Benefit / Use Case |
|---|---|---|---|
| Coding Accessories | CP-MSTB Coding Profile | 1734634 | Ensures correct plug alignment and prevents mismating during installation. |
| Coding Accessories | CR-MSTB Coding Section | 1734401 | Provides safe and error-free header/plug connection for the relay module. |
| Tooling | CRIMPFOX 6 Crimping Pliers | 1212034 | For precise crimping of ferrules; ensures reliable wire terminations. |
| Actuator | PSR-ESS-M0-H110 Actuator | 1221757 | Modular actuator with anti-lock collar for emergency stop switch integration. |
| Module Holder | PSR-ESS-ACC-CB1-C3 Holder | 1221747 | Connects contact block and actuator; suitable for modular E-stop configurations. |
| Contact Module | PSR-ESS-ACC-CB1-NC-SC Contact Module | 1221752 | Force-guided N/C contact for safety shutdown; integrates with modular E-stop systems. |
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Warranty – 1-year warranty for your peace of mind.
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