Overview
The Pepperl+Fuchs 52FR1 magnetic reed sensor is a precision magnet actuator engineered for industrial automation and motion control applications. This sensor actuator pair provides mechanical reed switch actuation triggered by magnetic fields, making it ideal for position sensing, limit detection, and proximity applications. The 52FR1 combines rugged construction with reliable switching performance, delivering consistent actuation across demanding industrial environments.
Key Features
- Magnetic actuation: Reed switch mechanism responds to magnetic field proximity with no moving external parts
- Compact design: Space-efficient form factor simplifies system integration
- Wide temperature range: Rated -40°C to +125°C for harsh industrial conditions
- Phenolic housing: Durable material resists impact and chemical exposure
- Simple installation: Two-hole mounting pattern enables quick panel or machine integration
- Series connection capable: Reed switches can be wired in series or parallel without restrictions
Technical Specifications
| Part Number | 52FR1 |
| Manufacturer Part Code | 450071 |
| Product Type | Magnetic Reed Sensor Actuator |
| Switch Type | Magnetically actuated reed contact |
| Housing Material | Phenolic |
| Operating Temperature Range | -40°C to +125°C (-40°F to +257°F) |
| Dimensions (L × W × H) | 36 × 23 × 9 mm (1.4 × 0.9 × 0.35 in.) |
| Mounting | 2 holes, 5.1 mm diameter |
| Connection Type | Direct reed switch (2-wire) |
| Switching Mechanism | Electromechanical reed contact |
Typical Applications
- Cylinder position sensing and end-of-stroke detection
- Door, gate, and barrier open/close monitoring
- Elevator and lift position feedback
- Machine tool limit switches and home position detection
- Conveyor and material handling system position sensing
- Pneumatic and hydraulic actuator position confirmation
Compatibility & Replacements
Compatible With
- Pepperl+Fuchs magnetic field sensors and proximity sensors
- Industrial control systems requiring binary position feedback
- Standard 24 VDC and AC control circuits
- Pneumatic and electromechanical automation systems
- Any application utilizing reed switch technology for magnetic actuation
Replaces / Drop-In Replacement For
- Direct replacement for OEM part number 450071
- Compatible with legacy Pepperl+Fuchs magnetic actuator applications requiring the 52FR1 form factor
- Verify compatibility with your system integrator before ordering if replacing other manufacturer actuators
Works With
- Pepperl+Fuchs proximity sensors (20FR1, 6FR1, and related series)
- Standard industrial PLC input modules via direct wiring
- Safety relay circuits and hardwired automation logic
- Variable frequency drives (VFDs) with discrete input cards
