Safely turn motors on and off near ignitable gases and dust—the housing on these switches seals in anything that could ignite flammable material. Made from aluminum, the housing is lightweight and durable. It guards against water, oil, and other materials that could cause damage. Even in harsh conditions, there’s no need to mount these switches inside an electrical panel.

You need to grip and twist the lever to actuate these switches, so they won’t accidentally turn on or off if something bumps into them. In addition to starting and stopping motors, they work with other circuits, such as lighting and electric heat circuits. They don’t provide overload protection.

Safely open or close a circuit near ignitable gases and dust—the housing on these switches seals in anything that could ignite flammable material. You'll know they're safe because they're NEC Class I, Divisions 1, 2 Groups B, C, and D; and Class II, Divisions 1, 2 Groups E, F, and G certified for hazardous locations. These switches send a signal to your circuit when an object hits the actuator—for instance, a box on a conveyor runs into the switch, stopping the conveyor. They open and close circuits as fast as snap-acting switches, but they have a bigger actuator for large objects.

Rated NEC Classes I, II, and III, these switches have a housing that keeps fire and sparks in, so they won’t ignite gases, vapors, or dust. To save space on your panel, they can control multiple circuits. Install them in a standard panel cutout.

Detect unwanted slowdowns in a rotary shaft that could cause machine damage and downtime. These switches are often used on drivetrains, conveyors, and other power-driven components. They come with a pulser disc, which you’ll need to attach to the shaft by drilling and tapping a hole. Once mounted, the disc rotates with the shaft and creates magnetic signals that the switch senses. When the speed falls below a set point, the switch will trigger an alarm or turn off the system.

Switches are UL listed and rated NEC Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G. They have an explosion-proof housing and are also rated NEMA 4X for washdown and corrosion protection.

Get NEMA 4 and IP66 protection from dirt and water. These switches are rated for hazardous locations for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G. If vibration or shock exceeds a set activation point, the contacts actuate to either shut down your machine or activate an alarm. Reset the switch with the push of a button. The activation point is adjustable between 0 to 5 gravity units (g) at 0 to 60 Hz.

Twist the sensor to detect metallic objects where explosive dust or gas may be present—the sensor rotates for front, side, top, or bottom sensing. These sensors are UL and C-UL listed as well as ATEX and IECEx certified for hazardous locations. Their NAMUR signal produces low current and low voltage, so they won’t spark or ignite. You must connect them to a barrier (sold separately), which reduces the current and voltage that enters your hazardous area.

Because you can rotate the sensor, these make good replacements for limit switches with actuators that could break when hit. They’re often known as inductive proximity sensors and detect objects even if they’re covered by water, oil, dirt, or a surface finish. Sensing distance is based on the type of material that’s sensed; the distance listed is for mild steel. Send signals from these sensors to programmable logic controllers (PLCs) to support automated processes.

These sensors have a 4-pole M12 plug that connects to cables with a socket (sold separately), so you can quickly connect and disconnect them. You can also check on them from any angle, thanks to LED status indicators on their corners. All are CE marked for safety.

To view wiring diagrams, select a part number and click Product Detail.

IP rated, all sensors seal out dust and water from high-pressure washdowns.

With an explosion-proof enclosure that meets NEMA 7 and 9 standards for hazardous locations, these switches were tested and verified by UL 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 or from on to off.

In addition to being UL listed, 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.

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.

Safe to use near ignitable gases and dust, the housing on these switches seals in anything that could ignite flammable material. All are UL listed and CSA certified for use in hazardous locations. Yank the cable anywhere along your line to quickly cut power in emergencies. They have positive-force, snap-open contacts that open a circuit when actuated, even if a spring fails or the contacts stick. The contacts will remain open until you tension the cable and reset the switch. Use the tension indicator to visually confirm that they’re reset correctly.

Designed for use in areas where flammable substances are present, these switches are CSA certified for hazardous locations. Mount them through a tank wall.