$ 287.50
Phoenix Contact PSR-SPP-24UC/THC4/2X1/1X2 safety relay delivers SIL3, Cat.4 two-hand control with compact design, fast monitoring, and reliable protection.
The Phoenix Contact PSR-SPP-24UC/THC4/2X1/1X2 safety relay is built for demanding two-hand control applications that require maximum operator protection. It supports compliance with international safety categories up to SIL 3 and Cat. 4 PL e, making it suitable for equipment where both hands must be engaged for safe operation. Its slim 22.5 mm design and Push-in connections make installation straightforward, while its fast synchronous monitoring ensures that both control signals are pressed within milliseconds. This combination helps protect operators from hazards in industrial machinery while ensuring processes remain reliable and efficient.
The PSR-SPP-24UC/THC4/2X1/1X2 relay uses dual enabling paths and a separate signaling output to deliver consistent and safe performance in critical machine applications. With automatic reset functionality and LED indicators for clear status feedback, it simplifies day-to-day use and reduces downtime. Designed for long service life with force-guided relay contacts, it withstands heavy industrial use while maintaining dependable safety functions. For operators, it provides peace of mind by preventing accidental machine starts, while for plant managers, it ensures compliance, lowers maintenance effort, and improves overall productivity in environments where safety cannot be compromised.
The Phoenix Contact PSR-SPP-24UC/THC4/2X1/1X2 stands out because it combines compact design, advanced safety certifications, and ease of integration. Unlike standard relays, it is purpose-built for two-hand control applications, ensuring precise synchronous monitoring that keeps operators protected. Its durable electromechanical build, long service life, and intuitive LED indicators make it a reliable safeguard for industries that demand both high performance and absolute safety.
This model directly addresses the challenge of preventing accidental machine activation in hazardous environments. In applications like presses or cutting machinery, it ensures operators use both hands, reducing the risk of severe injuries. By enforcing controlled and intentional machine operation, it protects workers, supports compliance with global safety standards, and minimizes costly downtime caused by accidents or misoperation. It essentially transforms safety-critical processes into streamlined, reliable operations without compromising efficiency.
| Feature | Details | Benefit |
|---|---|---|
| Two-Hand Control Compliance | Meets ISO 13851 Type IIIC | Ensures operator must use both hands, preventing accidental machine starts |
| High Safety Certification | SIL 3 (IEC 61508 / EN 62061), Cat. 4 PL e (EN ISO 13849-1) | Trusted safety performance for critical applications |
| Synchronous Activation | Response < 0.5 s | Guarantees coordinated and safe activation timing |
| Relay Contacts | 2 N/O enabling, 1 N/C signaling, force-guided | Provides redundant safety outputs and reliable monitoring |
| Operating Voltage | 24 V AC/DC (20.4 … 26.4 V range) | Flexible integration into standard control systems |
| Housing Width | 22.5 mm slim design | Saves panel space, easy DIN rail installation |
| Connection Type | Push-in pluggable terminals | Fast, tool-free wiring for reduced setup time |
| Service Life | Approx. 10⁷ mechanical cycles | Long-lasting performance under industrial conditions |
| Environmental Resistance | –20 °C to +55 °C, IP20 housing | Stable operation across wide industrial environments |
| Status Indication | Green LED display | Quick visual confirmation of relay status and operation |
| Durability | Shock 15 g, Vibration up to 2 g | Reliable under heavy-duty machine conditions |
Download Phoenix Contact PSR-SPP-24UC/THC4/2X1/1X2 (2963983) Datasheet
| Commercial Attribute | Details |
|---|---|
| GTIN (EAN/UPC) | 4017918904807 |
| Customs Tariff Number | 85371098 |
| Weight (excluding packing) | 160.32 g |
| Weight (including packing) | 219.54 g |
| Country of Origin | Germany (DE) |
In sheet-metal workshops, power presses are among the most hazardous machines due to their crushing force. A two-hand safety relay ensures that the operator must press both control buttons within a fraction of a second to activate the press. If one button is released or pressed too late, the relay cuts the power instantly, stopping the cycle. This mechanism forces both hands to remain clear of the press area, reducing the chance of accidental hand injuries while maintaining smooth production flow.
Punch presses require precise timing when loading parts, and accidental activation can cause severe injuries. By installing a two-hand safety relay, the press only operates when both activation switches are engaged at the same time. This setup ensures the operator’s hands are positioned safely outside the danger zone before any movement begins. Even if one switch fails or is pressed unintentionally, the machine remains inactive. The result is safer, more controlled punch press operation with reduced risk of human error and downtime.
Automated assembly lines often use touch-sensitive controls that can be triggered too easily. A two-hand relay adds a safety layer by requiring both sensors to be pressed within a tight synchronization window. If one sensor is released, the machine halts immediately, stopping actuators and preventing unintended motion. The system also checks for faults before restarting, ensuring only a deliberate and safe command will initiate the cycle. This approach helps operators work efficiently with robots and automated tools without compromising safety.
Industrial guillotines, used for cutting paper or sheet materials, pose significant risks if started accidentally. By integrating a two-hand relay, the cutter blade only descends when both activation buttons are pressed at the same time. This prevents accidental starts caused by bumped controls, falling objects, or single-hand triggers. Operators must use both hands intentionally, which keeps them safely away from the cutting zone. This safeguard not only protects workers but also ensures machines run with fewer unexpected interruptions, improving productivity.
| Category | Product / Accessory | Part Number | Description & Relevance |
|---|---|---|---|
| Crimping Tool | Phoenix Contact CRIMPFOX 6 | 1212034 | Crimping pliers for ferrules, ensuring reliable wiring connections with the relay’s Push-in terminals. |
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