$ 184.00
Phoenix Contact PSR-MS55-1NO-1DO-24DC-SC safety relay, SIL 3 certified, slim 6.8 mm design with 24V DC input for reliable machine and operator protection.
The Phoenix Contact PSR-MS55-1NO-1DO-24DC-SC Safety Relay delivers advanced protection for industrial systems where people and machinery need reliable safeguarding. It is certified up to SIL 3 and Performance Level e, ensuring it meets the highest safety standards. With a slim 6.8 mm design, this relay conserves valuable space in crowded control panels. Its two-channel non-equivalent operation increases fault tolerance, while a 24 V DC supply guarantees compatibility with modern automation setups. Providing one enabling current path and a digital output, it ensures quick response and secure interruption of hazardous circuits when required.
The PSR-MS55 Safety Relay blends compact size with high performance to improve both safety and efficiency. Its force-guided contacts and monitored manual start give operators better control over machines, reducing the chance of accidents. Clear LED indicators simplify system checks, while screw-terminal wiring speeds up installation. Built to work with devices such as magnetic switches and safety doors, it is engineered for long-term durability under demanding factory conditions. By integrating international safety standards into one small housing, it helps engineers build reliable safety circuits that reduce downtime and keep production lines running smoothly.
The Phoenix Contact PSR-MS55-1NO-1DO-24DC-SC stands out because it combines advanced safety certifications with one of the slimmest housings in its class. At only 6.8 mm wide, it saves critical cabinet space while still delivering SIL 3 and PL e protection. Its dual-channel non-equivalent monitoring ensures maximum fault tolerance, making it the go-to choice for engineers seeking reliable, compact, and future-proof safety solutions in modern industrial environments.
This safety relay tackles the critical challenge of machine and operator protection in high-risk automation setups. Complex production lines often face hazards like unsafe restarts, wiring errors, or unreliable shutdowns. The PSR-MS55 solves these by offering force-guided contacts, monitored manual start, and rapid response times, ensuring dangerous energy is safely interrupted. It creates confidence in safety-critical circuits, helping industries avoid downtime, reduce accidents, and comply with global safety standards effortlessly.
| Feature | Details | Benefit |
|---|---|---|
| Housing Width | 6.8 mm | Saves valuable space in control cabinets |
| Safety Certification | SIL 3 (IEC 62061), Cat. 4 / PL e (ISO 13849-1) | Ensures highest safety integrity and compliance |
| Control Type | Two-channel, non-equivalent | Increases fault tolerance and safety reliability |
| Contacts | 1 enabling current path (NO), 1 digital signal output | Provides secure shutdown and monitoring |
| Supply Voltage | 24 V DC (20.4…26.4 V DC) | Compatible with modern industrial automation |
| Response Time | <175 ms | Rapid detection and safe system shutdown |
| Operating Temperature | -40 °C to +60 °C | Reliable operation in harsh environments |
| Connection Method | Screw terminals, rigid/flexible 0.2–2.5 mm² | Simplified wiring and secure connections |
| Status Display | 2x LEDs (green) | Clear visual diagnostics and easy monitoring |
| Material & Color | PBT housing, yellow (RAL 1018) | Durable construction with high visibility |
| Protection Rating | IP20 (unit), IP54 (installation) | Ensures safe use in industrial conditions |
| Mechanical Service Life | 10 million cycles | Long-lasting reliability and reduced maintenance |
| Mounting Type | DIN rail, vertical/horizontal | Flexible integration into panels |
Download Phoenix Contact PSR-MS55-1NO-1DO-24DC-SC (2904957) Datasheet
| Commercial Attribute | Value | Benefit |
|---|---|---|
| GTIN Number | 4046356904872 | Enables global product identification and smooth supply chain handling |
| Tariff Number | 85371098 | Simplifies customs clearance and international trade classification |
| Weight (Net/Gross) | 69 g / 89 g | Lightweight for easy installation and reduced shipping costs |
| Country of Origin | Germany | Assurance of precision engineering and reliable German manufacturing quality |
High-speed packaging systems demand that protective doors remain closed before equipment is energized. By using the PSR-MS55’s dual-channel monitoring, even small wiring faults or tampering are detected immediately, shutting down the enabling current path. The manual reset feature prevents automatic restarts, ensuring operators can safely inspect equipment. Maintenance staff also benefit from quick fault identification through clear LED indicators, helping keep productivity high while maintaining strict safety standards.
In conveyor networks and warehouse automation, magnetic or position sensors control safe flow of goods. With two-channel non-equivalent input monitoring, the PSR-MS55 ensures that if one channel fails, the system still reacts safely. Its compact width is ideal for crowded control panels, while the force-guided contacts guarantee reliable interruption of hazardous energy. This makes it especially suitable for automated storage and retrieval systems where uninterrupted safety is as critical as throughput efficiency.
CNC machines and robotic stations require reliable emergency stop systems that cut power instantly in hazardous conditions. The PSR-MS55 provides stop category 0 functionality, disconnecting power to drives immediately upon activation. Force-guided contacts detect welded or faulty relays, offering an additional layer of assurance. With simple screw connections and a small housing, integration is straightforward, even in retrofits. This ensures both operator protection and compliance with international safety norms in advanced machining cells.
In stamping and forming presses, two-hand control prevents operators from reaching into dangerous zones during machine cycles. The PSR-MS55 processes both pushbuttons in a non-equivalent configuration, ensuring that a fault on one channel cannot compromise safety. Its monitored start means the machine only engages once the operator has intentionally reset the system. This provides peace of mind in high-risk applications where hands-on interaction with equipment cannot be avoided, reinforcing both productivity and compliance.
| Category | Model | Part Number | Benefit |
|---|---|---|---|
| Safety Relays (Same Series) | PSR-MS35 | – | Alternative in PSRmini family with similar slim housing |
| PSR-MS55-1NO-1DO-24DC-URM | – | Offers different wiring options for specific applications | |
| Marking Accessories | ZBF 6:UNBEDRUCKT | 0808710 | Provides clear labeling for relay terminals |
| ZBF 6,LGS:… Series | – | Saves installation time with ready-made labels | |
| Wiring Tools | CRIMPFOX 6 | 1212034 | Ensures reliable wiring connections to screw terminals |
| CRIMPFOX 10S | – | Useful for broader panel wiring needs | |
| DIN Rail Components | NS 35/7,5 G | 0800886 | Secure mounting for PSR relays in cabinets |
| CLIPFIX 35 | 3022276 | Quick installation and stable positioning | |
| Safety System Complements | PSRswitch | – | Companion device for monitoring access points |
| PSR-TRISAFE | – | Scalable solution for larger safety circuits |
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.
