FR MC-40 AC clamp meter — 600A True RMS, auto-ranging, NCV, backlit display
The FR MC-40 is a professional-grade AC clamp meter designed for electricians, engineers, and technicians who need accurate, reliable measurements across a wide range of electrical tasks. With a 600A AC current rating and True RMS measurement capability, it delivers precise readings on both sinusoidal and non-sinusoidal waveforms — essential for modern variable-frequency drives, switching power supplies, and non-linear loads.
The intelligent auto-ranging function selects the correct measurement range automatically, eliminating manual range selection and reducing the risk of overload. A large backlit LCD ensures clear readings in dimly lit panels and enclosures, while the data hold function freezes the display for easy logging in tight spaces.
Key Specifications:
- AC current: 0–600A (clamp, True RMS)
- AC voltage: 0–600V
- DC voltage: 0–600V
- Resistance: 0–2000Ω
- Measurement type: True RMS
- Ranging: Auto-ranging
- Display: Large LCD with backlight
- Non-contact voltage (NCV): yes
- Diode test: yes
- Data hold: yes
- Auto power-off: yes (battery conservation)
- Jaw opening: large (fits standard cable sizes)
- Power: AAA batteries
Key Features:
- True RMS measurement — accurate readings on non-sinusoidal waveforms from VFDs, inverters, and switching supplies
- 600A AC clamp range — handles high-current industrial and commercial loads without breaking the circuit
- Auto-ranging — automatically selects the correct range for fast, safe measurements
- Non-contact voltage detection (NCV) — quickly identify live conductors without direct contact
- Backlit LCD display — clear readings in dark panels, switchboards, and enclosures
- Data hold — freeze readings for easy recording in confined spaces
- Auto power-off — extends battery life during field use
- Diode and resistance testing — multi-function capability in a single tool
Applications:
- AC current measurement on live conductors without circuit interruption
- Electrical panel and switchboard testing
- Motor and HVAC load current measurement
- Industrial and commercial electrical maintenance
- Solar and inverter system commissioning
- Home and building electrical troubleshooting