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Rectangular LCD panel meter with current transformer, dark casing, digital readout showing voltage and amperage

Digital AC 40-300V 100A Power Energy Panel Meter LCD electrical system tool

SKU CH-JR22-7GQ21

Measures AC voltage 40.0–300.0V and current up to 99.99A, displaying power, energy, power factor and frequency on a colour LCD panel

  • Team affiliation1 Piece
  • Key features1*AC power meter, 1*instruction manual, Corded Electric, fal
  • Overall height7 L x 4.5 W x 4.5 H centimeters
  • Overall width7 L x 4.5 W x 4.5 H centimeters
  • Overall length7 L x 4.5 W x 4.5 H centimeters
  • Measures voltage, current, power, energy, power factor and frequency simultaneously
  • Voltage range AC 40.0–300.0 V, current up to 99.99 A
  • Energy accumulator retains kWh after power loss, resets with five-second hold
  • ±1 % accuracy from high-precision chip in flame-retardant ABS housing
  • Dry-environment rating suits generator, solar, refrigeration and electromechanical loads

AC 40–300 V 100 A panel meter

This digital panel meter measures AC voltage, current, active power, energy, power factor and frequency on a single colour LCD. It is intended for electricians, technicians and hobbyists who need to monitor single-phase circuits in generators, solar arrays, refrigeration units or general electromechanical equipment. The unit includes a current transformer and mounts in a standard panel cut-out.

Replaces separate voltmeter ammeter

Instead of wiring individual analog meters or a basic kWh counter, this device shows six parameters simultaneously with ±1 % accuracy. The jump is worth it when you need real-time power-factor or frequency data alongside cumulative energy, and when the circuit stays within the 40.0–300.0 V and 0–99.99 A ranges. It does not suit three-phase loads or DC systems.

Check your existing setup before ordering

Verify that the supply is single-phase AC between 45–65 Hz and that the conductor fits the supplied CT without exceeding 100 A. The meter requires a dry indoor location and correct CT polarity; reversing voltage or CT connections will damage the instrument. Ensure the panel cut-out accommodates the 7 × 4.5 cm housing depth.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $33.99
Pricier than about 55% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameaFe Power
Size & build
Overall height7 L x 4.5 W x 4.5 H centimeters
Overall width7 L x 4.5 W x 4.5 H centimeters
Overall length7 L x 4.5 W x 4.5 H centimeters
More details
Team affiliation1 Piece

Questions about this item

What are the panel cut-out dimensions for the 7 L x 4.5 W x 4.5 H cm meter?

The meter body measures 7 cm long, 4.5 cm wide and 4.5 cm high; cut the panel opening to match those outer dimensions so the bezel sits flush.

How do I connect the current transformer without damaging the unit?

Clamp the CT around the live conductor only, then plug its lead into the meter’s CT terminals — never reverse the CT or apply voltage to the CT input.

When does the accumulated kilowatt-hour reading roll over or need a manual reset?

Energy accumulates up to 99999 kWh and is retained after power loss; press and hold the button for 5 seconds to reset it to zero.

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