Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC Safety Relay

$ 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.

SKU Phoenix-2700553 Category

Product Description

Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC Safety Relay – Compact High-Performance Safety Monitoring

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.

Why Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC?

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.

What Problem Does It Solve?

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.

 


Key Features & Specifications – Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC: Article Number 2700553

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 – Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC: Article Number 2700553

Commercial Data Details
GTIN (Global Trade Item Number) 4046356912747
Customs Tariff Number 85371098
Weight (excluding packaging) 176.3 g
Country of Origin Germany (DE)

 


The Applications of the PSR-MC50-3NO-1DO-24DC-SC

1. Packaging Machines with Safety Gate Monitoring

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.

2. Robotic Work Cells with Emergency Stop Functions

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.

3. Conveyor Lines with Magnetic Safety Switches

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.

4. Press Machines with Controlled Start and Reset

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.

 


Related Products & Accessories – Phoenix Contact PSR-MC50-3NO-1DO-24DC-SC

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

 


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