Hydrolevel 1100H3 24V Low Water Cut-Off Auto Reset Without Harness

The Hydrolevel 1100H3 is a compact 24-volt low water cut-off safety control designed to protect residential and commercial hot water boilers from damage caused by low water levels. This essential safety device automatically shuts off the burner when water levels drop too low, preventing costly dry-firing damage and extending equipment life.

Key Features:

• Compact design ideal for tight installation spaces
• Automatic reset function restores operation once water level returns to safe level
• Built-in burner circuit test button for system diagnostics
• Power and low water LED indicators for easy status monitoring
• SPST switch type with 5 amp current rating
• Operates on 24V AC, 60 Hz power supply
• Rated for 250°F water temperature and 160 PSI pressure
• UL listed for both US and Canada

Specifications:

• Voltage: 24V AC
• Switch Type: SPST (Single Pole Single Throw)
• Current Rating: 5 Amps
• Temperature Rating: 250°F
• Pressure Rating: 160 PSI
• Dimensions: 1.72" W x 3.75" D x 1.38" H
• Switching Capacity: 50 VA
• Ambient Temperature: 170°F maximum

Important Note: This model (1100H3) does not include a wiring harness. Wire harnesses are available separately for various boiler models. Also known by part number 45-1103, this low water cut-off is suitable for hydronic heating systems and provides reliable electronic sensing for accurate water level monitoring in residential and commercial HVAC applications.