Electrical Testers | McMaster-Carr

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229 Products

Measuring and Inspecting

Multimeters

Take current, voltage, resistance, and other electrical measurements

Voltage Detectors

Voltage Detectors

Check for voltage in receptacles, cables, and other electrical components

Current Detectors

Current Detectors

Check for AC current and voltage without making direct contact with wire

Test Leads

Pair with electrical testers such as multimeters to analyze your devices

Insulation Testers

Insulation Testers

Measure insulation quality in motors, generators, and other electrical equipment

Motor Phase Sequence Testers

Motor Phase Sequence Testers

Analyze a motor's rotation and electrical system to confirm proper wiring

Electrical Outlet Testers

Electrical Outlet Testers

Confirm proper wiring by checking for open circuits

Voltage Meters

Measure voltage in electrical components

Power Consumption Meters

Power Consumption Meters

Measure the amount of power your devices consume to help calculate energy costs

Battery Testers

Battery Testers

Measure the health of rechargeable batteries, or check if it's time to replace disposable batteries

Current Meters

Measure current without interrupting the circuit

Electrical Resistance Meters

Electrical Resistance Meters

Prevent damage to electronics by checking material and surfaces for static discharge

Circuit Breaker Identifiers

Circuit Breaker Identifiers

Determine which circuit breaker is connected to an electrical receptacle

Line Break Detectors

Line Break Detectors

Check for continuity in circuits

Electronic-Component Testers

Electronic-Component Testers

Test, identify, and troubleshoot components such as circuit boards and diodes

Circuit Tracers

Circuit Tracers

Locate cables behind walls, check for continuity, and identify circuit breakers

Power Consumption Data Loggers

Power Consumption Data Loggers

Record data to monitor energy usage and fix intermittent problems, such as voltage spikes

Oscilloscope/Multimeters

Oscilloscope/Multimeters

Perform electrical tests, record data, and view a graph of electrical waveforms

Oscilloscopes

Analyze problems with electrical equipment by graphing voltage and other electrical waveforms

Fastening and Joining

Screwdriver/Nutdrivers

Screwdriver/Nutdrivers

Quickly switch between driving screws and driving nuts

Containers, Storage, and Furniture

Multimeter Cases

Multimeter Cases

Store and carry multimeters

Electrical

Wire and Cable Strippers

Wire and Cable Strippers

Remove the outer insulation on wire and cable

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