High-Current Switches | McMaster-Carr

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391 Products

Manual Switches

High-Current Toggle Switches

Able to withstand high currents, these switches are often used with motors and pumps.

High-Starting-Current Rocker Switches

Also known as high-inrush current switches, these switches can handle starting currents up to 10 times greater than their rating, such as when a motor starts.

Submersible High-Starting-Current Rocker Switches

Rated IP67 for protection from dust and temporary submersion.

High-Current Rocker Switches

Able to withstand high currents, these switches are often used with motors and pumps.

High-Amp Outlet-Box-Mount Key Switches

Timer Switches

High-Current Wall-Mount Timer Switches

Control equipment with high currents such as air conditioners, heaters, and ventilation fans.

High-Current Time and Day Activated Switches

Control equipment with high currents, such as landscape lighting, pumps, and heaters.

Outdoor High-Current Time
and Day Activated Switches

Rated NEMA 3R, these rain-tight switches protect against falling liquids and light splashing.

Outdoor Set-to-the-Minute High-Current
Time and Day Activated Switches

Rated NEMA 3R, these rain-tight switches protect against falling liquids and light splashing.

Set-to-the-Minute High-Current
Time and Day Activated Switches

For precise control of high-current equipment such as landscape lighting, pumps, and heaters, these switches schedule on/off times to the exact minute.

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.

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.

Touch-Safe DIN-Rail Mount Infrequent-Cycle Relays

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

Replacement Contacts for Relays

Replace worn contacts instead of replacing the entire relay.

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.

High-Current Lighting Relays

Switch lighting systems on and off—these relays can handle the high switching current on large overhead light systems.