$ 229.31
Phoenix Contact PSR-MC40-3NO-1DO-24DC-SC safety relay, SIL 3, Cat.4, PL e. Compact 24V DC solution for E-stop, safety doors, and light grids.
The Phoenix Contact PSR-MC40-3NO-1DO-24DC-SC Safety Relay delivers advanced protection for machines and operators in demanding environments. Built for use with emergency stop functions, safety doors, and light barriers, it meets the highest global safety levels up to SIL 3 and PL e, Cat. 4. Its slim 12.5 mm design saves space in crowded control cabinets, while the 24 V DC supply ensures consistent performance. With three enabling current paths and a digital monitoring output, it is engineered for fast reaction, dependable operation, and compliance with international safety requirements.
The PSR-MC40 safety relay offers more than compact size—it integrates dual-channel monitoring, manual or automatic reset options, and force-guided contacts in one unit. This design reduces wiring complexity, improves system uptime, and enhances machine reliability. Its low energy use, quick switching behavior, and strong resistance to vibration make it suitable for harsh industrial conditions. For manufacturers and plant operators, the result is greater operational safety, easier integration, and long-term cost efficiency. Whether used in production lines, automated handling, or safety-critical systems, it ensures protection without compromising performance.
The Phoenix Contact PSR-MC40-3NO-1DO-24DC-SC is chosen for its combination of slim housing, high safety ratings, and multi-function flexibility. Unlike standard relays, it merges two-channel control, selectable reset modes, and three enabling paths into a single, space-saving unit. This design empowers engineers to simplify their control panels while ensuring compliance with SIL 3 and PL e standards. It’s the go-to safety relay when space efficiency, reliability, and global certification matter most.
Modern industrial systems often face the challenge of balancing compact design with uncompromised safety. The PSR-MC40-3NO-1DO-24DC-SC addresses this by providing a robust, quick-response solution that protects both operators and machines. It eliminates the need for multiple safety devices, reducing wiring effort and downtime risks. By integrating advanced monitoring and reliable force-guided contacts, it ensures safe shutdowns and continuous protection—a crucial answer to the growing demand for smarter, leaner, and safer automation systems.
| Feature | Details | Benefit |
|---|---|---|
| Safety Ratings | SIL 3 (IEC 62061), Cat. 4 / PL e (EN ISO 13849-1) | Meets the highest industrial safety standards |
| Housing Width | 12.5 mm | Saves cabinet space in dense installations |
| Control Type | 1- or 2-channel monitoring | Flexible setup for different safety applications |
| Outputs | 3 enabling current paths, 1 digital output | Reliable switching and feedback for safety systems |
| Operating Voltage | 24 V DC (20.4–26.4 V range) | Stable performance with standard control power supplies |
| Response Time | <175 ms start, <20 ms release | Fast reaction ensures operator and machine safety |
| Reset Options | Automatic or manual monitored start | Adaptable to machine design and operator requirements |
| Service Life | 10 million mechanical cycles | Long operational life reduces maintenance needs |
| Operating Temperature | -40 °C to +55 °C | Designed for harsh industrial environments |
| Mounting | DIN rail, vertical or horizontal | Quick installation in control cabinets |
| Approvals | CE, cULus listed, functional safety certifications | Assures compliance with global regulations |
Download Phoenix Contact PSR-MC40-3NO-1DO-24DC-SC (2700569) Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4046356912570 |
| Tariff Number | 85371098 |
| Weight | 172.9 g (net) / 173.9 g (with packing) |
| Country of Origin | Germany (DE) |
High-speed packaging machines often require protective barriers to keep operators safe during product changeovers or adjustments. When combined with light curtains, the PSR-MC40 relay ensures that any interruption of the beam cuts power instantly through its enabling current paths. With a response time under 20 milliseconds and compact 12.5 mm width, it fits easily into crowded control cabinets while still delivering top-level functional safety. This prevents accidents on moving conveyors and keeps production lines fully compliant with modern safety regulations.
Robotic manufacturing cells typically use interlocked safety gates to restrict entry during operation. The PSR-MC40 monitors dual-channel inputs from these gates, immediately shutting down motion when opened. Its manual reset function ensures the robot cannot restart until the gate is securely closed and verified, while its digital output provides feedback to the control system. This protects workers from accidental contact with robotic arms and ensures smooth compliance with global safety standards.
Large conveyor installations often rely on multiple emergency-stop buttons positioned along the line. The PSR-MC40 links these controls into a monitored circuit, guaranteeing that pressing any stop button instantly removes power from the conveyor drive. Thanks to its force-guided contacts and redundant input monitoring, the relay prevents faults from bypassing safety. By centralizing emergency control, it simplifies wiring, reduces downtime during service, and delivers consistent machine protection.
Press brakes and other heavy machinery demand strict operator safety during loading and maintenance. When used with guard doors or access covers, the PSR-MC40 triggers an immediate stop if a protective barrier is opened. Its fast reaction time and monitored start capability prevent premature restarting of the press. With durability rated up to 10 million cycles and compliance with SIL 3 and PL e levels, it offers reliable, long-term protection in demanding metalworking environments.
| Category | Model | Part Number | Description | Benefit |
|---|---|---|---|---|
| Coding Profile | CP-MSTB | 1734634 | Red insulating coding profile for plug or header slot | Prevents miswiring and ensures correct connector placement |
| Coding Section | CR-MSTB | 1734401 | Red insulating coding section for header or inverted plug | Adds mechanical coding to avoid mismatched connections |
| Crimping Tool | CRIMPFOX 6 | 1212034 | Crimping pliers for ferrules, 0.25–6.0 mm², lateral entry | Ensures reliable and professional conductor terminations |
| Emergency Stop Actuator | PSR-ESS-M0-H110 | 1221757 | Actuator with anti-lock collar for modular E-stop switches | Enables safe, secure operator activation of emergency stop |
| Module Holder | PSR-ESS-ACC-CB1-C3 | 1221747 | Holder for modular E-stop switches with bayonet lock | Connects actuator and contact block for stable mounting |
| Contact Module | PSR-ESS-ACC-CB1-NC-SC | 1221752 | Force-guided N/C contact module for modular E-stop switches | Provides reliable safety shutdown in accordance with SIL 3, PL e |
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Warranty – 1-year warranty for your peace of mind.
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