Mestek j11r08365-001 High Limit Switch Gg Series

Product Description

The MESTEK j11r08365-001 is a high limit switch designed for use in GG Series gas-fired heating units rated from 60,000 to 120,000 BTU/h. The high limit switch monitors heat exchanger or plenum temperature and interrupts the burner circuit when temperatures exceed a safe threshold, protecting the unit from overheating damage. This is an OEM-replacement safety control component installed by licensed HVAC technicians during routine service or failure diagnosis on commercial and residential hydronic or forced-air heating equipment bearing the Sterling brand.

This high limit switch is specifically rated for GG Series units in the 60,000 to 120,000 BTU/h capacity range. It is used in applications where the heating unit requires a factory-matched safety cutout device to maintain proper sequencing and thermal protection. Installers working on Sterling-branded GG Series equipment will find this part a direct-fit replacement for the original factory component.

Key Features

• Designed for GG Series gas-fired heating units in the 60,000 to 120,000 BTU/h range
• Interrupts burner operation when plenum or heat exchanger temperature exceeds safe limits
• OEM-replacement part for precise fit and function in original equipment
• Critical safety component for overheat protection and system reliability

Compatibility

Designed for Sterling GG Series heating units rated 60,000 to 120,000 BTU/h as stated in the product data.

Installation Notes

High limit switch replacement is performed by a licensed HVAC technician. Shut off all electrical power and gas supply to the unit before beginning any service work. Follow applicable local codes and the unit manufacturer service documentation when disconnecting and reconnecting control wiring. Do not bypass or jumper the high limit switch under any circumstances.

Technical Specifications

• Application: GG Series 60,000 to 120,000 BTU/h
• Component Type: High Limit Switch

Standard Information

• Brand: MESTEK
• Manufacturer Part Number: j11r08365-001