Applications

duct High limit switch Applications

Firestat duct high limit switches are used anywhere HVAC equipment must automatically shut down when duct temperatures exceed a safe operating limit. These controls are commonly installed in commercial buildings, apartment complexes, schools, hospitals, industrial facilities, and electric duct heater systems to help protect equipment, reduce fire risk, and support applicable building code requirements.

Firestat Duct High Limit Switches provide an added layer of protection for HVAC systems by monitoring for excessive air temperatures in ductwork. These controls use a helix bi-metal sensing element that reacts quickly to sudden temperature rises, triggering a snap-action switch to interrupt the circuit. By automatically shutting down equipment when temperatures exceed a preset threshold, Firestat switches help prevent overheating and potential system failure.

View the application notes below to explore how Firestats are implemented across different HVAC scenarios.

CERTIFICATION

Firestat Duct High Limit Controls are UL Approved and fully compliant with Section 907.3.1 of the North Carolina Mechanical Code, ensuring they meet industry standards for safety and performance.

CUSTOM OPTIONS

Firestat Duct High Limit Thermostat Switches are customizable with selectable temperature ranges, element lengths, and fixed temperature set points to meet specific HVAC application requirements.

MADE IN THE U.S.A.

Senasys temperature and limit switches are 100% tested for quality and reliability before leaving our facility, ensuring consistent performance in every application.

SAFETY

Safety is our priority. Firestat Duct High Limit Controls are an ideal solution for apartment complexes and multi-dwelling units, helping prevent hazardous conditions by monitoring and controlling overheating in HVAC air ducts.