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.
