Siemens Differential Static Pressure Airflow Switch, Manual Reset, SPST

Siemens 141-0575 Aluminized Steel Airflow Switch senses static differential pressure and at setpoint open/closes a set of electrical contacts. This Switch actuates electrical circuits (positive pressure), fan inlet (negative pressure), or across the fan (differential pressure) to detect excessively high positive pressures or low negative pressures and turn off the fan before damage occurs to ducts or dampers.

The manual reset switch (141-0575) should be used for applications that require safety lock out (shut down) of the fan. The switch can be used on the fan discharge.

Features:
• Can be used in multiple applications: Proof of flow, High limit cut out or Filter ‘dirty’ indication.
• Sample Line Connectors, .2 connectors, complete with nuts and ferrules, which accept 1/4" (6 mm) OD copper or polyethylene tubing
• Body has Zinc-plated Steel with blue erudite dip
• Can be mounted in any position as long as the diaphragm is in any vertical plane