Xylem-McDonnell & Miller 309100 Two SPST Auto Reset General Purpose Switch Model 11

Description

The Xylem-McDonnell & Miller 309100 is a dependable general purpose switching device engineered for versatile HVAC and hydronic control applications. Designed as Model Number 11, this switch delivers dual SPST (Single-Pole, Single-Throw) functionality with automatic reset, eliminating the need for manual intervention after a trip event and helping to minimize system downtime.

Key Features

• Two SPST switching contacts for flexible circuit control
• Automatic reset operation — no manual reset required after activation
• Multi-voltage compatibility: 24 VAC, 120 VAC, and 240 VAC
• General purpose design suitable for a wide range of HVAC and hydronic control applications
• Manufactured by McDonnell & Miller, an Xylem brand trusted in the industry for boiler and hydronic controls

Voltage Compatibility

• 24 VAC
• 120 VAC
• 240 VAC

Switch Configuration

• Contact Type: Two SPST (Single-Pole, Single-Throw)
• Reset Type: Automatic
• Model Number: 11
• SKU: 309100

Applications

• Boiler and hydronic system control circuits
• General purpose HVAC switching and safety applications
• Low-voltage and line-voltage control panel integration

Built to the quality standards that have made McDonnell & Miller a go-to name in boiler controls and hydronic systems, the 309100 Model 11 is a reliable choice for contractors and engineers seeking a multi-voltage, auto-reset switching solution.