Phoenix PSR-MC Series — Safety Relays (24 V DC)
The Phoenix PSR-MC Safety Relay Series offers high-performance safety modules for monitoring emergency stops, safety doors, light curtains, and other critical safety functions in industrial automation systems. Designed for 24 V DC control circuits, these relays provide fail-safe operation, redundancy, and comprehensive diagnostics in a compact format.
With multiple contact configurations (NO, NC, and DO), the PSR-MC series ensures flexibility, reliability, and compliance with international safety standards, making it ideal for modern machine safety and process protection.
1. Product Table
| Part Number | Model | Contacts | Control Voltage | Type | Description |
|---|---|---|---|---|---|
| 1015526 | PSR-MC73-5NO-1DO-24DC-SP | 5 NO + 1 DO | 24 V DC | Plug-in (SP) | Multi-channel safety relay for large machine safety circuits. |
| 1015533 | PSR-MC73-5NO-1DO-24DC-SC | 5 NO + 1 DO | 24 V DC | Screw terminal (SC) | High-reliability relay for E-stop and safety door control. |
| 2702097 | PSR-MC72-2NO-1DO-24DC-SP | 2 NO + 1 DO | 24 V DC | Plug-in (SP) | Compact design for dual-channel safety inputs. |
| 2702096 | PSR-MC72-2NO-1DO-24DC-SC | 2 NO + 1 DO | 24 V DC | Screw terminal (SC) | Standard model for light curtain and two-hand control. |
| 2702095 | PSR-MC70-2NO-1DO-24DC-SP | 2 NO + 1 DO | 24 V DC | Plug-in (SP) | Safety relay with fast response and diagnostic LEDs. |
| 2700564 | PSR-MC50-3NO-1DO-24DC-SP | 3 NO + 1 DO | 24 V DC | Plug-in (SP) | Compact 22.5 mm housing for machine safety control. |
| 2700553 | PSR-MC50-3NO-1DO-24DC-SC | 3 NO + 1 DO | 24 V DC | Screw terminal (SC) | Enhanced isolation for reliable safety chain management. |
| 1082029 | PSR-MC45-3NO-1DO-24DC-SP | 3 NO + 1 DO | 24 V DC | Plug-in (SP) | Flexible safety relay for contactor and actuator control. |
| 1082024 | PSR-MC45-3NO-1DO-24DC-SC | 3 NO + 1 DO | 24 V DC | Screw terminal (SC) | Suitable for safety light barriers and door monitoring. |
| 2702901 | PSR-MC42-2NO-1DO-24DC-SC | 2 NO + 1 DO | 24 V DC | Screw terminal (SC) | Dual-channel relay for E-stop and two-hand control circuits. |
| 2700570 | PSR-MC40-3NO-1DO-24DC-SP | 3 NO + 1 DO | 24 V DC | Plug-in (SP) | Safety relay with LED indication and reset monitoring. |
| 2700569 | PSR-MC40-3NO-1DO-24DC-SC | 3 NO + 1 DO | 24 V DC | Screw terminal (SC) | Versatile relay for machine and process control. |
| 2702412 | PSR-MC37-3NO-1NC-24DC-SP | 3 NO + 1 NC | 24 V DC | Plug-in (SP) | Safety relay with feedback monitoring and stop category 0. |
| 2702411 | PSR-MC37-3NO-1NC-24DC-SC | 3 NO + 1 NC | 24 V DC | Screw terminal (SC) | Reliable NC contact version for feedback loop circuits. |
| 2700548 | PSR-MC34-3NO-1DO-24DC-SP | 3 NO + 1 DO | 24 V DC | Plug-in (SP) | Basic safety relay for standard emergency stop control. |
| 2700540 | PSR-MC34-3NO-1DO-24DC-SC | 3 NO + 1 DO | 24 V DC | Screw terminal (SC) | Cost-effective version for compact safety systems. |
2. Technical Highlights
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Control voltage: 24 V DC
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Output contacts: 2–5 NO, 1 NC, or 1 DO (depending on model)
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Reset options: Manual or automatic reset
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Response time: < 20 ms
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Housing width: 22.5 mm or 45 mm depending on version
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Mounting: DIN rail EN 60715
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Status indicators: LED for Power, Channel 1/2, and Output
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Connection type: Plug-in (SP) or screw terminal (SC)
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Approvals: CE, cULus Listed, TÜV, SIL 3 / PL e
3. Key Advantages
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Ensures compliance with EN ISO 13849-1 (PL e) and IEC 61508 (SIL 3)
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Supports redundant safety circuit design
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Compact, modular design saves cabinet space
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LED status indicators simplify troubleshooting
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Available in multiple contact configurations for flexible applications
4. Typical Applications
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Emergency stop (E-Stop) monitoring
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Safety door and gate switches
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Light curtain and two-hand control monitoring
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Process and machine safety systems
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Conveyor and robotic cell protection
Phoenix PSR-MC Series — Safety Relays (24 V DC)
