Guardmaster SensaGuard | Allen-Bradley | 440N-Z21S17H Guardmaster Non Contact Switch SensaGuard

Product Description: Allen-Bradley 440N-Z21S17H

The Allen-Bradley 440N-Z21S17H is a non-contact safety interlock switch that utilizes RFID technology to provide high-level tamper resistance. Designed with a robust 18 mm stainless steel cylindrical housing, it is suitable for harsh industrial environments. The switch includes a standard coded RFID actuator and offers reliable monitoring of guard doors and access panels.

Key Features

• RFID-coded actuation for enhanced security
• 18 mm stainless steel cylindrical housing
• Assured sensing distance: 10 mm (0.39 in)
• Two PNP safety outputs (0.2 A max)
• One PNP auxiliary output (0.2 A max)
• LED indicators for door status and diagnostics
• 6-inch pigtail with 8-pin Micro (M12) connector
• Suitable for series connection in safety circuits
• IP69K enclosure rating for high-pressure washdown environments

Technical Specifications

• Operating Voltage: 24V DC (20.4–26.4 VDC)
• Safety Outputs: 2 x PNP, 0.2 A max
• Auxiliary Output: 1 x PNP, 0.2 A max
• Sensing Distance: 10 mm (0.39 in)
• Housing Material: Stainless Steel
• Connection: 6-inch pigtail with 8-pin Micro (M12) connector
• Enclosure Rating: IP69K
• Operating Temperature Range: -10°C to +55°C (14°F to 131°F)
• Certifications: CE, UL, CUL, KC, CCC, C-TICK
• Safety Standards Compliance: ISO 13849-1: Performance Level PLe
• Safety Standards Compliance: IEC 62061: SIL 3
• Safety Standards Compliance: EN 954-1: Category 4
• MTTFd: > 385 years

Application Areas

• Monitoring of guard doors and access panels
• Safety interlock systems in machinery
• Applications requiring high tamper resistance
• Environments with potential misalignment issues
• Food and beverage industry with washdown requirements

Advantages

• High tamper resistance through RFID coding
• Non-contact operation reduces wear and maintenance
• Compact design allows for installation in confined spaces
• LED indicators provide clear status and diagnostic information
• Suitable for high-risk applications requiring stringent safety measures