Overview
The Allen-Bradley 440N-G02085 is a magnetically actuated, non-contact safety interlock switch from the Guardmaster Ferrogard series. Designed for installation on machine guard doors and safety barriers, this switch isolates power to machinery when the guard is opened, preventing unauthorized access to hazardous areas. Its non-contact operation eliminates wear and mechanical failure, while the rectangular FRS20 housing and sealed design make it suitable for harsh industrial environments.
Key Features
- Non-contact actuation: Magnetic operation eliminates mechanical wear and extends service life with minimal maintenance
- 2 NC safety contacts: Both safety relay contacts switch simultaneously to ensure positive isolation of control power
- Internal overload protection: Non-resettable overload protection on safety contact prevents unsafe operation following electrical stress
- High misalignment tolerance: Reliable operation with up to 23 mm break distance, accommodating guard door inconsistencies
- IP67 sealed construction: Fully dust-tight and capable of withstanding temporary immersion in water; ideal for washdown and wet environments
- Quick disconnect ready: Standard 4 m PVC cable with M4 mounting flexibility
Technical Specifications
- Control voltage: 24 Vdc
- Switching current: 1 A
- Contact type: 2 NC (Normally Closed) safety reed contacts
- Make distance: 12 mm
- Break distance: 23 mm
- Housing material: Moulded ABS plastic (red)
- Enclosure rating: IP67 (NEMA 6P)
- Operating temperature range: –10 to +55 °C (14 to 131 °F)
- Cable length: 4 m PVC
- Weight: 0.75 lbs (0.34 kg)
- Mounting: M4 mountable in any position
- Certifications: EN 954-1, ISO 13849-1, IEC/EN 60204-1, NFPA 79, EN 1088, ISO 14119, ANSI B11.19, AS 4024.1
Typical Applications
The 440N-G02085 is widely used in industrial machine safety systems including press brake guards, robot cell perimeter fencing, conveyor belt protection, CNC machining enclosures, injection molding machine doors, and automated assembly line barriers. Its robust design and compliance with international safety standards make it ideal for pharmaceutical manufacturing, food processing, automotive assembly, and general factory automation where personnel protection is critical.
Compatibility & Replacements
The Allen-Bradley 440N-G02085 is part of the Guardmaster Ferrogard FRS20 family and is compatible with standard 24 Vdc safety control circuits. It integrates with Guardmaster safety relays and controllers including the 440N, 440T, and safety modules from Rockwell Automation. For applications requiring different voltage, contact configuration, or cable lengths, related models include the 440N-G02028 (FRS6 housing, 250 Vac) and other Ferrogard variants. Direct drop-in replacements are limited to identical model numbers due to contact configuration specificity; consult Rockwell Automation technical documentation or authorized distributors for alternative solutions. The 440N-G02085 can also be paired with Guardlink safety linking technology for EtherNet/IP diagnostic integration.
