Rheem 47-21900-06 Limit Switch, Manual Reset, Normally Closed, SPST, Close at -31F, Opens at 180F
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Product Overview
The Rheem 47-21900-06 is a manual reset limit switch designed for reliable temperature-based circuit protection in heating and HVAC applications. This switch operates in a normally closed (NC) configuration and features a Single Pole Single Throw (SPST) design for straightforward integration into control circuits.
Temperature Operation
- Opens at: 180°F — disconnects the circuit when temperature reaches this threshold to prevent overheating
- Closes at: -31°F — ensures the circuit remains closed under normal and low-temperature operating conditions
Manual Reset Functionality
This limit switch features a manual reset mechanism, meaning that once the switch has opened due to a high-temperature condition, it must be manually reset before the circuit can be restored. This design provides an added layer of safety by requiring a deliberate action to resume operation, helping to identify and address the root cause of the temperature fault before restarting the system.
Key Specifications
- Part Number: 47-21900-06
- Brand: Rheem
- Switch Type: Limit Switch
- Reset Type: Manual Reset
- Switch Configuration: SPST (Single Pole Single Throw)
- Normal State: Normally Closed (NC)
- Opens At: 180°F
- Closes At: -31°F
Compatibility
This is a genuine Rheem OEM replacement part, engineered to meet the exact specifications of compatible Rheem heating systems. Always verify compatibility with your specific unit model before installation.
Dimensions
| Length: | 1.0" |
| Width: | 1.0" |
| Height: | 1.0" |
Part Rheem 47-21900-06 Limit Switch, Manual Reset, Normally Closed, SPST, Close at -31F, Opens at 180F fits 0 models
Product Overview
The Rheem 47-21900-06 is a manual reset limit switch designed for reliable temperature-based circuit protection in heating and HVAC applications. This switch operates in a normally closed (NC) configuration and features a Single Pole Single Throw (SPST) design for straightforward integration into control circuits.
Temperature Operation
- Opens at: 180°F — disconnects the circuit when temperature reaches this threshold to prevent overheating
- Closes at: -31°F — ensures the circuit remains closed under normal and low-temperature operating conditions
Manual Reset Functionality
This limit switch features a manual reset mechanism, meaning that once the switch has opened due to a high-temperature condition, it must be manually reset before the circuit can be restored. This design provides an added layer of safety by requiring a deliberate action to resume operation, helping to identify and address the root cause of the temperature fault before restarting the system.
Key Specifications
- Part Number: 47-21900-06
- Brand: Rheem
- Switch Type: Limit Switch
- Reset Type: Manual Reset
- Switch Configuration: SPST (Single Pole Single Throw)
- Normal State: Normally Closed (NC)
- Opens At: 180°F
- Closes At: -31°F
Compatibility
This is a genuine Rheem OEM replacement part, engineered to meet the exact specifications of compatible Rheem heating systems. Always verify compatibility with your specific unit model before installation.
Dimensions
| Length: | 1.0" |
| Width: | 1.0" |
| Height: | 1.0" |
Part Rheem 47-21900-06 Limit Switch, Manual Reset, Normally Closed, SPST, Close at -31F, Opens at 180F fits 0 models