Allen-Bradley 817S-PTC-48 MachineAlert Thermistor Monitoring Relay - 24-48V AC/DC, Series B

The Allen-Bradley 817S-PTC-48 (Series B) is a professional MachineAlert thermistor monitoring relay designed to safeguard industrial motors and mechanical equipment against damaging over-temperature conditions. Operating in conjunction with PTC thermistor sensors embedded directly within motor windings, this highly reliable monitoring unit effectively prevents insulation breakdowns, minimizes unexpected downtime, and optimizes asset operational safety.

Features:

• Brand: Allen-Bradley / Rockwell Automation
• Model: 817S-PTC-48
• Series: Series B (MachineAlert)
• Control Supply Voltage: 24...48V AC/DC
• Monitoring Type: PTC Thermistor temperature tracking
• Protection Rating: IP20

Technical Specifications:

• Input Terminals: T1, T2 for external PTC sensors
• Max Cold PTC Resistance: 1500 Ω
• Mounting: 35 mm DIN rail snap-on fixing (EN 60715 / EN 50022)
• Diagnostics: Built-in LED indicators for real-time status and fault signaling
• Test Function: Manual test button for quick fault simulation
• Dimensions: 80 mm (H) x 22.5 mm (W) x 99.5 mm (D)

Key Benefits:

• Supplementary Protection: Provides a critical, direct layer of thermal defense for motor control circuits operating in demanding industrial environments.
• Integrated Troubleshooting: Equipped with an intuitive front-panel test button and status LEDs to streamline system diagnostics and setup validation.
• Flexible Integration: Wide control voltage versatility (24-48V AC/DC) allows seamless integration into diverse automation panel configurations.

Important Notes:

• VAT invoices available upon request.
• Returns accepted within 30 days; buyer pays return shipping.