Thanks to their ability to handle higher current than switches with contact blocks, these switches are often found in applications from large motors to warehouse lighting systems. The cam pushes contacts more tightly together than contact blocks, allowing more electricity to flow through. However, they aren’t made to be rewired like switches with contact blocks are. These switches require you to grip and twist a lever to turn circuits on or off, so they won’t accidentally actuate if you bump into them. Mount them in a standard panel cutout diameter.

Choose a switch based on the complexity of your application. On/off switches have two positions. Changeover switches have three positions. They work well if you need to toggle between a primary power source and a backup generator. Selector switches have up to six positions. They give you the most control, allowing you to turn on or off multiple devices or different parts of your machine.

Legend plates (sold separately) give you a way to change your switch’s message.

The wide surface of these switches makes them easy to press on and off, even if your hands are full and you need to use an elbow. They’re often used as power switches on electronic devices and control panels.

Switches for a 13/16” dia. panel cutout are round, so you can use a drill bit or knockout to install them instead of cutting a rectangular hole.

Install these switches in a panel cutout. Small enough to fit in tight spaces, they handle comparable electrical loads to standard sized switches. They cut power and keep it isolated to prevent equipment from starting up during inspection and maintenance. All have a lockout so you can secure them in the off position with a padlock (not included). They’re rated IP65 for protection from washdowns.

Small yet mighty, these switches are about as tall and wide as an index card yet durable enough to mount directly to a wall. Their polycarbonate housing protects the switch and resists denting, chipping, and cracking. Rated IP65, the housing also seals out water even in frequently washed down areas. Don’t be fooled by their size—these switches can handle electrical loads comparable to a standard sized switch.

These switches cut power and keep it isolated to prevent equipment from starting up during inspection and maintenance. All have a lockout, so you can secure them in the off position with a padlock (not included).

Fit these relays where standard spade-terminal relays are too big. You can connect them three ways. Plug them into a socket (sold separately), connect them with quick-disconnect terminals, or solder wires directly to the terminals. An LED indicator shows you the status of the relay, so you know it’s connected and wired correctly.

Relays that control 2 or more circuits have a lockable test button, so you can test their function. When you press the button, the relay switches contacts. Use this button when checking a relay for proper function before installing it, or when investigating issues with wired relays.

Relay sockets mount directly on 35 mm DIN rail (also known as DIN 3 rail) for fast installation. You can also mount them to a flat surface using screws.

Sealed for safety, these relays are a good choice for hazardous locations where combustible or corrosive gases may be present.

Relays with screw terminals or spring-clamp terminals are considered interface relays, so they’re placed between your controller and components to isolate the input and output circuits. This means they protect your component from voltage spikes while amplifying the relay’s signal and reducing interference for reliable transmission. They are often used for switching applications, such as small motors and pilot lights. The included relay socket mounts on 35 mm DIN rail (also known as DIN 3 rail). Relays with spring-clamp terminals connect and disconnect to wires without needing to turn screws. With no screws to shake loose with vibration, the terminals hold tight over time.

Relays with circular-pin terminals or quick-disconnect terminals are hermetically sealed—completely air- and watertight—to shield internal parts from gases, moisture, and other contaminants. They plug into relay sockets (sold separately) for easy installation.

Relay sockets mount to 35 mm DIN rail (also known as DIN 3 rail) or flat surfaces.

Receive signals from safety monitoring relays or controllers to switch devices off and on because of a system failure. Also known as force-guided or mechanically linked contacts, the interlocking opposing contacts on these relays cannot be open or closed at the same time. To keep your system from receiving false switching signals, the interlocking opposing contact must remain open even if a contact welds closed.

IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits. These relays have been tested to safety standards that can help you achieve your system's PL (performance level) and SIL (safety integrity level). Choose a relay with a PL and SIL rating to meet the needs of your system. Higher ratings indicate greater safety protection. As your system becomes more complex, you generally require a higher safety protection level. Mount them to 35mm DIN rail (also known as DIN 3 Rail).

Relays that meet SIL3 are tested for applications with a probability of failure of 0.01% to 0.1% and are used for preventing fires, explosions, or toxic releases. Relays that meet CAT 4 withstand circuit surges in electrical applications up to 600V.

When a failure is detected, relays with self-monitoring circuitry signal the controller to remove power and prevent restarting until the issue is resolved.

Relays with nondetachable contacts have auxiliary contacts that won’t separate from the relay if there is shock or vibration. Relays with mirror auxiliary contacts have contacts that are normally closed and cannot be open at the same time as a normally open main contact.