The AAON P81570 is an OEM auto limit switch engineered specifically for AAON HVAC equipment. Designed to protect heating systems from overheating conditions, this limit switch automatically interrupts the circuit when supply-air or heat exchanger temperatures exceed the safe operating threshold, then resets automatically once temperatures return to normal.
Key Features
- Auto-reset limit switch for reliable, hands-free protection
- Operating temperature range: 140°F – 170°F
- 7″ insertion length for proper depth placement in duct or heat exchanger applications
- OEM AAON replacement part — ensures precise fit and performance
- Helps prevent equipment damage caused by overheating or restricted airflow
- Suitable for use in AAON rooftop units and air handling equipment
Specifications
- SKU: P81570
- Brand: AAON
- Type: Auto Limit Switch
- Temperature Range: 140°F – 170°F
- Insert Length: 7″
Application
This limit switch is a direct OEM replacement for AAON commercial rooftop units and air handlers. It mounts in the heat exchanger or supply-air section and provides critical high-temperature cutout protection. The auto-reset design eliminates the need for manual intervention after a nuisance trip, reducing service calls and downtime. Always verify compatibility with your specific AAON unit model before installation.
