Siemens QP Series Pressure Switch

Pressure Switches for Gas and Air QPH and QPL pressure switches are used for gas and air pressure supervision on industrial and commercial burner applications.The QPL31 series pressure switches break the electrical circuit when the pressuredrops below the adjusted value.The QPH31 series pressure switches break the electrical circuit when the pressureincreases above the adjusted value. UL listed for USA and Canada, FM approved, ISO 9001 certified; European approved versions available. Adjustable pressure range from 1 to 112 inches water column (WC). Automatic and manual reset models. Ventless installation. Surge protected up to 15 psi. Available Part Numbers: Automatic Reset QPL31.050A00 - Automatic Reset, Low Execution, 1 - 20"WC (2.5 - 50mbar)QPL31.075A00 - Automatic Reset, Low Execution, 5 - 30"WC (12.5 - 75 mbar)QPL31.280A00 - Automatic Reset, Low Execution, 28 - 112"WC (70 - 280 mbar) QPH31.010A00 - Automatic Reset, High Execution, 0.8 - 4" WC (2 - 10mbar)QPH31.050A00 - Automatic