$ 229.31
Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC safety relay ensures SIL 3, PL e certified protection with compact 12.5 mm design for industrial safety control.
The Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC safety relay is a compact solution designed to safeguard industrial machinery by meeting SIL 3 and PL e requirements. Built with a slim 12.5 mm housing, it efficiently monitors non-equivalent two-channel signals such as safety doors, magnetic switches, or emergency stop devices. The relay provides three enabling current paths and one digital output, ensuring reliable interruption of hazardous energy when required. With both automatic and monitored manual start options, plus fast reaction times, it supports high safety standards while minimizing installation space in modern control cabinets.
The PSR-MC50-3NO-1DO-24DC-SC safety relay combines advanced safety performance with long-term durability. Its force-guided contacts guarantee dependable switching, while LED indicators offer clear status feedback for quick diagnostics. Thanks to its resistance to shock, vibration, and wide operating temperatures, the unit remains reliable in demanding factory environments. Engineers benefit from reduced wiring complexity, simple integration into existing safety circuits, and confidence that the device supports international safety norms. The result is a leaner, more efficient control setup that protects operators, lowers downtime risk, and ensures smooth compliance in critical automation applications.
The Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC stands out because it merges high safety integrity with an ultra-slim design. In just 12.5 mm width, it delivers SIL 3 and PL e protection, three enabling current paths, and a monitored start function. This means engineers can save cabinet space without compromising on reliability or compliance. It’s not just a relay; it’s a compact powerhouse designed for modern, high-performance safety systems where precision, efficiency, and certification matter.
Industrial environments often face the challenge of protecting people and machinery while balancing cost and space. The PSR-MC50-3NO-1DO-24DC-SC safety relay solves this by providing a secure shutdown mechanism for hazardous operations in a single, compact unit. By monitoring safety doors, emergency stops, or magnetic switches, it eliminates risks of uncontrolled machine movement. It reduces wiring effort, ensures faster diagnostics with LED feedback, and gives operators peace of mind that every stop command is executed safely and instantly.
| Feature | Details | Benefit |
|---|---|---|
| Safety Certifications | SIL 3 (EN/IEC 62061), Cat. 4 / PL e (EN ISO 13849-1) | Meets highest international safety standards |
| Control Type | Two-channel, non-equivalent operation | Provides redundancy and maximum safety assurance |
| Housing Width | 12.5 mm | Saves valuable space in control cabinets |
| Enabling Current Paths | 3 independent safety outputs | Reliable interruption of hazardous energy |
| Digital Output | 1 non-safety-related (PNP) | Enables monitoring and status signaling |
| Start Options | Manual monitored or automatic | Flexible setup for different machine safety concepts |
| Response Time | <175 ms (start), <20 ms (release) | Fast reaction for critical safety applications |
| Rated Voltage | 24 V DC (20.4…26.4 V DC) | Compatible with standard industrial power supplies |
| Switching Capacity | Up to 250 V AC/DC, 6 A | Suitable for high-current safety applications |
| Mechanical Durability | >10 million cycles | Long service life, reducing maintenance |
| Operating Temperature | -40 °C … +55 °C | Reliable in harsh industrial environments |
| Protection Class | IP20 (device), requires IP54 installation | Ensures safe use in protected environments |
| Mounting | DIN rail, vertical or horizontal | Easy installation and flexibility in design |
| Status Indicators | 3x LED safety, 1x LED power | Clear visual diagnostics for quick troubleshooting |
Download Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC 2700553 Datasheet
| Commercial Data | Details |
|---|---|
| GTIN (Global Trade Item Number) | 4046356912747 |
| Customs Tariff Number | 85371098 |
| Weight (excluding packaging) | 176.3 g |
| Country of Origin | Germany (DE) |
High-speed packaging systems require doors and hatches to remain locked during operation. The PSR-MC50-3NO-1DO-24DC-SC relay monitors two independent channels from gate switches, allowing the machine to run only when all safety conditions are met. If a door opens, the relay disconnects power through its three enabling paths. The slim 12.5 mm design helps save space inside crowded control panels, while LED feedback shows operators exactly where the fault occurred, keeping downtime and troubleshooting time to a minimum.
In automated robot zones, several emergency stop buttons and interlocks are often distributed around the work area. The relay ensures both channels of each stop command are monitored so that a single point of failure cannot compromise safety. When pressed, the relay interrupts power immediately, while its digital output provides status to the PLC for alarms or reports. This combination of quick shutdown and clear feedback enhances worker protection while supporting proactive maintenance.
Long conveyor systems require multiple points of monitoring to prevent accidents during material transfer. By connecting magnetic safety switches in a two-channel configuration, the relay validates that conditions are safe before allowing conveyor operation. Any unexpected door opening or sensor fault forces an immediate shutdown. Its fast release time ensures the conveyor stops quickly, while automatic start capability reduces operator delays when safe conditions are restored, improving overall efficiency.
Heavy-duty presses pose serious hazards if they restart unintentionally. The PSR-MC50 relay requires a deliberate manual reset before resuming operation, preventing unsafe restarts. Both channels must confirm safe status before the press cycle begins. If a door opens or a fault is detected during operation, the relay instantly cuts off energy via its force-guided contacts. This functionality safeguards operators while keeping compliance with strict international safety standards, ensuring both safety and productivity on the factory floor.
| Category | Model Name | Part Number | Benefit / Compatibility |
|---|---|---|---|
| Safety Relay Variant | PSR-MC42-3NO-1NC-24DC | – | Alternative relay with similar functions for different wiring needs |
| Safety Relay Variant | PSR-MC31-2NO-24DC | – | Space-saving relay for applications with fewer outputs |
| Accessory – Crimp Tool | CRIMPFOX 6 | 1212034 | Ensures secure wiring connections for reliable safety relay performance |
| Accessory – Terminal Block | PLC-INTERFACE Relay Socket | – | Simplifies relay wiring and replacement during maintenance |
| Accessory – Labeling System | UC-TM 5,08 | 0811228 | Provides clear identification of safety circuits |
| Accessory – Power Supply | QUINT POWER 24 V DC, 5 A | – | Stable power source for safety relay operation |
| Accessory – Screwdriver | SZS 0,6X3,5 | 1204517 | Safe and precise installation tool |
For expert guidance before placing your order.
Warranty – 1-year warranty for your peace of mind.
Global Shipping – We ship worldwide with secure packaging and reliable delivery.
Technical Support – Contact us for professional after-sales technical assistance.
