600V AC Switches | McMaster-Carr

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423 Products

Limit Switches

Compact Safety Limit Switches

Shorter and thinner than other safety limit switches, these are sized to fit tight spaces.

Safety Limit Switches

Protect machinery and ensure the safety of personnel—these switches will open the circuit when actuated even if a spring fails or the contacts stick.

Hazardous Location Limit Switches

Use these switches where ignitable gas and dust may be present. They meet NEC Class I, Division 1, Groups B, C, and D; and Class II, Division 1, Groups E, F, and G for hazardous locations.

Motor Control Switches

Motor Switches

Use these switches to turn motors on and off, or with lighting and electric heat circuits. They do not provide overload protection.

Washdown Enclosed Motor Switches

Rated NEMA 4X, these switches are protected from corrosion and washdowns.

Enclosed Motor Switches

These switches are housed in a protective enclosure.

Hazardous Location Enclosed Motor Switches

Use these switches where ignitable gas and dust may be present. They're rated Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G for hazardous locations.

Raintight Enclosed Motor Switches

These switches are rated NEMA 3R for protection from falling water and light splashing.

Manual Motor Starters

Operated by hand, these starters are more compact than electrically actuated motor starters; use them when multiple motor circuits are housed in one panel.

Disconnect Switches

Panel-Mount Compact Disconnect Switches

Install these switches in a panel cutout.

Enclosed Compact Disconnect Switches

These switches are housed in a protective enclosure so they can be mounted wherever needed.

Panel-Mount Disconnect Switches

Harsh Environment Panel-Mount
Disconnect Switches

Rated IP69K, these switches are protected from high-pressure and high-temperature washdowns.

Durable Disconnect Switches

Protected by a steel enclosure, these switches withstand tougher conditions than switches in a plastic housing. Also known as safety switches, they have quick-make/quick-break action to eliminate arcing and prolong switch life.

Outdoor Durable Disconnect Switches

A raintight NEMA 3R rated enclosure protects these switches outdoors.

Enclosed Disconnect Switches

Washdown Enclosed Disconnect Switches

Rated IP66, these switches are protected from washdowns.

Enclosure Disconnect Switches

Mount these switches inside your enclosure to prevent it from opening when power is on—actuating the switch disconnects power and releases the door.

Relays

DIN-Rail Mount Solid State Relays

Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation.

DIN-Rail Mount Touch-Safe Screw Terminal Relays

Quickly and safely mount these relays on 35 mm DIN rail (also known as DIN 3). IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits.

Solid State Screw Terminal Relays

With no moving parts, these solid-state relays are fast switching and require less maintenance, last longer, and are quieter than mechanical switches.

Touch-Safe DIN-Rail Mount Infrequent-Cycle Relays

Operate equipment that cycles on and off from your control cabinet.

Infrequent-Cycle Relays

For use with equipment that cycles on and off, these relays meet UL 508 for air conditioning and heating. Also known as definite-purpose contactors.

Analog-Input Proportional-Control Relays

Often used to regulate the speed of AC fans or keep a heater at a set temperature, these relays connect directly to sensors to calculate and adjust output power. This allows you to use an analog input without converting it to a digital signal to control output power.

Safety Relays

Receive signals from safety monitoring relays or controllers to switch devices off and on because of a system failure.

Machine-Guard Relays

The interlocked opposing contacts won't close at the same time, so these relays are suitable for safety applications such as machine guarding.