Siemens Combustion QRA75.A17 Detector 326010-701 Contractors appreciate the spring return

Contractors appreciate the spring return pneumatic actuator design for its high close-off pressure ratings and the exposed yoke that allows for easy maintenance and visual stroke verification in the field

this specific power element and HCA charge are designed exclusively for R22 or R407C pressure-temperature curves

reducing energy loss and supporting consistent burner performance

meaning the contacts will re-close automatically once the temperature recedes below the 450°F set point

While contents can vary by production run

Siemens Combustion QRA75.A17 Detector 326010-701 Contractors appreciate the spring returnThe Siemens Combustion QRA75. A17 is a high precision, self checking UV detector engineered specifically for continuous duty industrial burner applications. Designed for the supervision of gas and oil flames, this ultraviolet flame detector utilizes a high sensitivity UV cell to monitor combustion and ignition spark proving with professional grade reliability. Operating at AC 120 V, the QRA75. A17 features a 69mm detector tube and a built in stepper