Overview
The Allen-Bradley 440N-S32032 Guardmaster Sipha sensor is a miniature non-contact magnetic safety switch designed for interlocked guard doors and access control on industrial machinery. It is a non-contact switch in a miniature ABS housing with moulded-in brackets and incorporates several magnetically sensitive elements triggered in sequence to operate correctly. The switch is shipped complete with actuator. This model provides a 10-meter cable for flexible field installation and must be paired with a Sipha control unit to form a monitored safety circuit.
Key Features
- Designed to operate with its own actuator to prevent the switch being defeated by a simple magnet
- IP67 rated, ideal for steam cleaning or high-pressure hosing down
- Incorporates magnetically sensitive elements triggered in a particular sequence for operation
- 10-meter PVC cable for extended reach installations
- Meets certifications: EN1088, EN954-1, ISO13849-1, ISO14119, IEC/EN60204-1, CE Listed, cULus Listed, ANSI B11.19, AS4024.1, NFPA79, TUV
Technical Specifications
- Part Number: 440N-S32032
- Manufacturer: Rockwell Automation / Allen-Bradley
- Supply Voltage: 250V AC, 300V DC
- Supply Current: 500mA
- Safety Contacts: 1 N.O. & 1 N.C.; Auxiliary Contacts: 1 N.C.; Reed actuator type: Standard
- Switching Distance: 11mm (Break), 5mm (Safety)
- Housing Material: ABS
- IP Rating: IP67
- Dimensions: 48mm (L) × 25mm (W) × 12mm (D)
- Connection: 10m PVC Cable
- Safety Classification: Cat. 4/PLe (EN ISO 13849-1) and SIL 3 (IEC 62061/IEC 61508)
Typical Applications
- Guard door interlocks on packaging machinery
- Access control for metal forming and stamping equipment
- Protective gates on industrial presses and injection molders
- Personnel safety barriers on automated assembly lines
- Cabinet enclosure monitoring on control panels and control systems
Compatibility & Replacements
The Sipha S1 must be connected to a Sipha control unit to provide a monitored circuit. Related Sipha sensors in the 440N series include the 440N-S32022 (3m cable, same contact configuration) and other S-series variants. The 440N-S32032 is a direct replacement for existing installations requiring the same S12 head/actuator assembly and 10m cable length. Consult Rockwell Automation documentation or a qualified integrator to confirm control unit compatibility.
