Overview
The Allen-Bradley 440N-S32032 is a SensaGuard non-contact interlock switch engineered for industrial machinery safety applications. This switch uses RFID technology for actuator coding and inductive sensing to eliminate mechanical contact, providing superior reliability for guard door monitoring without wear. The 10m PVC cable with pre-assembled termination simplifies field installation and reduces downtime.
Key Features
- Non-contact magnetic sensing eliminates mechanical wear and contact bounce
- Category 4 / SIL 3 certified per EN954-1 and IEC61508
- IP67 plastic housing protects against moisture and contamination
- 1 N.O. + 1 N.C. + 1 N.C. auxiliary contact configuration
- RFID coded actuator prevents circumvention by simple magnets
- Reed contact type for reliable switching
- Pre-terminated 10m PVC cable for quick deployment
Technical Specifications
- Contact Type: Reed (1 N.O. & 1 N.C., 1 N.C. Aux)
- Rated Voltage: 250V AC, 300V DC
- Cable Length: 10 meters (PVC jacket)
- Terminal Type: Pre-assembled cable
- Enclosure Rating: IP67
- Housing Material: ABS plastic
- Sensing Technology: Inductive / magnetic
- Safety Standards: CE, CUL, KC, UL; Category 4 / SIL 3 (EN954-1, IEC61508)
- Weight: 0.413 kg
- Operating Temperature: -10°C to +60°C (typical)
Typical Applications
- Machine guard door interlocks
- Safety gate monitoring systems
- Press and punch machine guarding
- Robotic enclosure access control
- Automated assembly line safety stations
Compatibility & Replacements
The 440N-S32032 integrates with standard Rockwell Automation safety relays including MSR126, MSR127, MSR200/300 family, SmartGuard, and Safety I/O modules. Compatible actuators include the 440N-ZUPREC SensaGuard actuator. This non-contact switch is a direct replacement for older contact-based interlock switches in retrofit safety upgrades.
