Bus Plugs | McMaster-Carr

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25 amp to 49.9 amp

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100 amp to 199.9 amp

200 amp or greater

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1,442 Products

Terminal Blocks

Modular DIN-Rail Mount Terminal Blocks

Modular DIN-Rail Mount Terminal Blocks

Mix and match blocks to get the exact number of circuits you need

Terminal Blocks

Terminal Blocks

Dividers separate live wires and keep your setup tidy

Space-Saving Modular DIN-Rail Mount Terminal Blocks

Space-Saving Modular DIN-Rail Mount Terminal Blocks

Snap onto low-profile DIN 2 rail to save space in compact enclosures

Touch-Safe Terminal Blocks

Touch-Safe Terminal Blocks

Recessed terminals protect you from shocks and prevent short circuits

Quick-Connect Modular DIN-Rail Mount Terminal Blocks

Quick-Connect Modular DIN-Rail Mount Terminal Blocks

Snap wire into place with a clamp instead of fussing with a screw

Quick-Connect Terminal Blocks

Quick-Connect Terminal Blocks

Snap wire into place with a clamp instead of fussing with a screw

Enclosure-Mounted Terminal Blocks

Enclosure-Mounted Terminal Blocks

Ready to install without mounting the terminal block first

Through-Panel Quick-Connect Terminal Blocks

Through-Panel Quick-Connect Terminal Blocks

Snap wire in by hand to connect components on opposite sides of a panel

Terminal Blocks for Thermocouples

Terminal Blocks for Thermocouples

Connect thermocouple wire without distorting or destroying the signal

High-Temperature Terminal Blocks

High-Temperature Terminal Blocks

The ceramic body handles temperatures up to 1,200° F

Plug-and-Socket Circuit Board Terminal Blocks

Plug-and-Socket Circuit Board Terminal Blocks

Cut power and swap out components on your circuit board without removing any wire

Circuit Board Terminal Blocks

Circuit Board Terminal Blocks

Pins on the bottom align with circuit board layouts

Enclosure-Mounted Quick-Connect Terminal Blocks

Enclosure-Mounted Quick-Connect Terminal Blocks

Release a spring instead of fussing with a screw to attach your wire

Space-Saving Terminal Blocks

Space-Saving Terminal Blocks

Connect the same number of circuits as standard terminal blocks in a narrower footprint

Terminal Blocks for Motors

Terminal Blocks for Motors

Rotate jumpers to match wye, delta, and other wiring layouts on motors

Clear-View Enclosure-Mounted Terminal Blocks

Clear-View Enclosure-Mounted Terminal Blocks

Check circuits through the clear cover while blocking out dirt and liquids

Terminal Blocks for RTD and Thermocouple Connection Heads

Terminal Blocks for RTD and Thermocouple Connection Heads

Connect thermocouple and RTD probes to wire and instrumentation

Space-Saving Circuit Board Terminal Blocks

Space-Saving Circuit Board Terminal Blocks

Handle as much voltage as other circuit board blocks while taking up half the space

Through-Panel Terminal Blocks

Through-Panel Terminal Blocks

Mount in a panel cutout to connect components on opposite sides

Touch-Safe Plug-and-Socket Terminal Blocks

Touch-Safe Plug-and-Socket Terminal Blocks

Cut power with the pull of a plug while preventing shocks and short circuits

Quick-Connect Plug-and-Socket Modular DIN-Rail Mount Terminal Blocks

Quick-Connect Plug-and-Socket Modular DIN-Rail Mount Terminal Blocks

Pull the plug to cut power and swap out equipment

Other Products

Disconnect Switches

Disconnect Switches

Make sure equipment stays turned off during inspection and maintenance

Circuit Breakers

Circuit Breakers

Reusable way to interrupt circuits when they overload or short

Circuit Breaker Boxes

Circuit Breaker Boxes

Hold a series of circuit breakers in line; also known as load centers

Motor Switches

Turn motors, lighting, and electric heat circuits on and off

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)