$ 229.31
Ensure safe shutdowns with Phoenix Contact PSR-MC34-3NO-1DO-24DC-SC. Compact 12.5 mm relay, SIL 3, Cat. 4, PL e certified for reliable machine safety.
The Phoenix Contact PSR-MC34-3NO-1DO-24DC-SC safety relay is designed to safeguard people and machines in demanding industrial environments. Built to meet SIL 3, Category 4, and Performance Level e requirements, it ensures dependable shutdown of emergency stops and safety doors. With a compact 12.5 mm housing, it saves space in crowded control cabinets while delivering full safety functionality. Offering 1- or 2-channel operation, automatic or manual reset, and integrated cross-circuit monitoring, the device provides a practical solution for achieving high levels of operational safety in modern production facilities.
The PSR-MC34-3NO-1DO-24DC-SC safety relay brings reliability and efficiency to machine safety circuits. Its force-guided relay contacts support fault detection, reducing risks and improving uptime. With three enabling outputs and a digital monitoring signal, engineers can easily integrate it into existing systems. Fast reaction times and flexible start options help tailor safety functions to different applications. By combining ease of installation on DIN rails with durable components rated for continuous operation, this relay ensures long-term performance. It is especially valuable where space is limited but maximum safety compliance and uninterrupted operation are required.
Because it packs world-class safety performance into just 12.5 mm of space. This compact relay combines SIL 3 and PL e certification, force-guided contacts, and flexible start options to deliver reliable protection in the smallest form factor. It’s the smarter choice when you want maximum safety without sacrificing valuable panel real estate.
It eliminates the risk of unreliable emergency stops and safety door monitoring in fast-paced industrial environments. By providing fault detection, dual-channel control, and cross-circuit monitoring, the relay ensures machines shut down safely under every scenario. This reduces downtime, prevents accidents, and gives engineers confidence that their systems are always compliant and secure.
| Feature | Details | Benefit |
|---|---|---|
| Housing Width | 12.5 mm ultra-slim design | Saves valuable control cabinet space |
| Safety Standards | Up to SIL 3 (IEC 62061), Cat. 4 / PL e (ISO 13849-1) | Ensures maximum operator and machine safety |
| Control Channels | 1- or 2-channel operation | Flexible integration into different safety architectures |
| Outputs | 3 enabling current paths, 1 digital signal output | Reliable safety switching with diagnostic feedback |
| Relay Type | Electromechanical with force-guided contacts | Guarantees fault detection and safe shutdown |
| Start Options | Automatic or manual monitored start | Adaptable to machine-specific safety requirements |
| Cross-Circuit Detection | Integrated | Prevents wiring faults and ensures reliable function |
| Response Times | <175 ms activation, <20 ms release | Fast reaction improves overall safety performance |
| Operating Voltage | 24 V DC (20.4–26.4 V DC range) | Standardized supply for industrial automation |
| Power Consumption | Approx. 2 W | Energy-efficient operation |
| Current Capacity | Up to 6 A continuous per output | Suitable for demanding safety loads |
| Status Indicators | Multiple green LEDs for function and power | Easy on-site diagnostics and monitoring |
| Temperature Range | –40 °C to +55 °C | Reliable use in harsh industrial conditions |
| Mounting | DIN rail, vertical or horizontal | Quick installation and flexible cabinet layout |
| Protection Class | IP20 (housing), install in IP54+ enclosure | Protected for industrial environments |
| Service Life | Up to 10 million mechanical cycles | Long-lasting and dependable operation |
| Dimensions | H: 112.2 mm, D: 114.5 mm | Compact design for modern panels |
Download PSR-MC34-3NO-1DO-24DC-SC 2700540 Datasheet
| Commercial Data | Details |
|---|---|
| GTIN Number | 4046356912716 |
| Tariff Number | 85371098 |
| Weight (with packaging) | 182.5 g |
| Weight (without packaging) | 143.74 g |
| Country of Origin | Germany (DE) |
In modern packaging lines, safety is crucial where operators interact with machines that run at high speed. The PSR-MC34 relay ensures that access doors or safety guards immediately disable conveyors, sealing units, or labeling equipment when opened. Thanks to its dual-channel monitoring and cross-circuit detection, wiring faults cannot bypass the safety logic. With three independent enabling outputs, multiple machine sections can be disconnected simultaneously, allowing operators to safely intervene without compromising system performance.
Machine tools such as CNC mills and lathes often require strict door monitoring to protect workers during spindle operation. This relay supports redundant door sensors, shutting down high-powered drives if unauthorized access occurs. Its compact size makes it ideal for retrofitting within control cabinets that have limited space. The force-guided relay contacts add a critical layer of protection, ensuring safe stop behavior even in the rare event of a contact failure. Rapid response times further minimize the risk of accidental exposure to rotating tools.
Robotic cells used in automotive or electronics assembly need reliable safety controls. The PSR-MC34 can interface with light curtains or gate switches to halt robotic motion instantly when a person enters the cell. Its three enabling outputs allow separate control of robot drives, end-of-arm tooling, and safety brakes. The monitored start function ensures operations only resume after the area is verified safe. Cross-circuit monitoring eliminates risks from wiring errors, giving engineers confidence in the system’s integrity during continuous production.
Large-scale conveyor systems often include multiple emergency-stop stations across different zones. With this safety relay, a triggered stop command cuts power to motors, activates braking systems, and signals alarms through separate outputs. The diagnostic feedback output helps maintenance teams quickly identify the fault source, reducing downtime. By combining compact dimensions with high reliability, the PSR-MC34 ensures safe and efficient material handling in industries ranging from logistics to food processing.
| Category | Model | Part Number | Benefit |
|---|---|---|---|
| Coding Profile | CP-MSTB | 1734634 | Prevents incorrect plugging and ensures secure connection |
| Coding Section | CR-MSTB | 1734401 | Enhances connection reliability and safety |
| Crimping Tool | CRIMPFOX 6 | 1212034 | Enables precise, durable conductor termination |
| Actuator | PSR-ESS-M0-H110 | 1221757 | Provides safe, ergonomic emergency stop operation |
| Module Holder | PSR-ESS-ACC-CB1-C3 | 1221747 | Ensures secure and modular emergency stop assembly |
| Contact Module | PSR-ESS-ACC-CB1-NC-SC | 1221752 | Reliable switching element for modular E-stop systems |
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Warranty – 1-year warranty for your peace of mind.
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