With an explosion-proof enclosure that meets NEMA 7 and 9 standards for hazardous locations, these switches were tested and verified by UL and CSA for use where explosive gas or dust may be present. Often used with ovens, dryers, and HVAC systems, they can indicate a filter is clogged or help maintain a certain air pressure. These switches turn equipment on and off, activate automated controls, or signal alarms when the differential pressure reaches your setpoint. They are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed).

In addition to being UL listed and CSA certified, these switches are CE marked and FM approved, so they also meet European safety standards. They also are IP and NEMA rated for use outdoors and protect against dust and splashing water.

When measuring pressure in ductwork, pair them with a static pressure probe.

For technical drawings and 3-D models, click on a part number.

To check the difference in pressure between two points, these switches have a dial indicator that shows differential pressure in real time. The dial indicator operates independently of the switch. You’ll sometimes see these switches used to indicate a filter is clogged in a pump or cooling system. When the differential pressure reaches your setpoint, they turn equipment on and off, activate automated controls, or signal alarms. They are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed).

Rated NEMA 4X, these switches protect against dirt, washdown, and corrosion. They are also rated IP65 for protection from dust and rinsing. All are CSA certified, so they meet Canadian safety standards.

Tested and verified by UL and C-UL for use where explosive dust or gas are present, these switches have an explosion-proof enclosure that meets NEMA 7 and 9 standards for hazardous locations. They are often used to indicate a filter is clogged in a pump or cooling system. When the differential pressure reaches your setpoint, these switches can turn equipment on and off, activate automated controls, or signal alarms. They are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed).

In addition to being UL and C-UL listed, these switches are CE marked, so they also meet European safety standards. All switches are IP and NEMA rated for use outdoors and to protect against some corrosion, dust, and washdowns.

For technical drawings and 3-D models, click on a part number.

Safe to use where flammable gases and combustible dust may be present, these switches activate or deactivate when your flow reaches a factory-set level. All are UL listed for hazardous environments. Because their set point is fixed, they’re ready to go, making them easy to install. They actuate when your flowing liquid or gas pushes their paddle into a set position. These switches are single pole, double throw (SPDT) and can turn one device from off to on (normally open) or from on to off (normally closed). They must be mounted horizontally to function accurately.

These switches are calibrated with water and air. They can also be used with other liquids and gases but may not measure accurately if their viscosity is significantly different.

For technical drawings and 3-D models, click on a part number.

UL listed for use where flammable gases or combustible dusts may be present, these flow switches activate or deactivate equipment when your flow rate reaches a set point. Use the adjustment screw to select their set point. They actuate when your flowing liquid or gas pushes their paddle into a certain position determined by the set point. All are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed). Mount them horizontally. Rated NEMA 4, they also protect against weather and washdowns.

These flow switches are calibrated with water and air. You can use them with other liquids and gases, but they may not measure accurately if the viscosity is different from water or air.

For technical drawings and 3-D models, click on a part number.