Mestek j11r00306-002 High Limit Switch Xf Series

Product Description

The MESTEK j11r00306-002 is a high limit switch designed for use in XF Series heating units rated from 100,000 to 400,000 BTU/h. High limit switches are safety controls that monitor heat exchanger or plenum temperatures and shut down the burner or heat source when temperatures exceed a safe threshold, preventing equipment damage and potential hazards. This component is a direct replacement part for qualified HVAC technicians servicing MESTEK Sterling XF Series commercial or residential heating equipment.

This high limit switch is rated for the XF Series product line covering the 100K through 400K BTU/h capacity range. It is suited for installation in forced-air heating applications where the unit requires a reliable over-temperature shutoff control. Licensed HVAC technicians performing preventive maintenance or component replacement on XF Series units will encounter this part as a standard service item.

Key Features

• Factory-specified high limit switch for MESTEK Sterling XF Series heaters
• Compatible across the full 100,000 to 400,000 BTU/h output range of the XF Series
• Provides automatic over-temperature shutoff to protect heat exchanger and system components
• OEM-style direct replacement for simplified installation and reliable fit

Compatibility

Designed for use with MESTEK Sterling XF Series heating units rated from 100,000 to 400,000 BTU/h.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect all electrical power and allow the unit to cool completely before removing or installing any limit switch. The switch must be mounted securely and wired according to the equipment wiring diagram and applicable NEC requirements. Do not bypass or jumper the high limit switch during testing or normal operation.

Technical Specifications

• Application: XF Series 100,000 to 400,000 BTU/h
• Component Type: High Limit Switch

Standard Information

• Brand: MESTEK
• Manufacturer Part Number: j11r00306-002