The FNIRSI MC-40 is a high-precision digital clamp meter built for accuracy, durability, and versatility. With a high current capacity of up to 600A, True RMS technology, and intelligent auto-ranging, it delivers precise readings across a variety of applications. The large, backlit display ensures clear visibility in any environment, while the data hold function allows users to freeze measurements for easy analysis.

Equipped with a wide range of professional features, the MC-40 supports non-contact voltage detection (NCV), diode testing, resistance measurement, and continuity checks. It also includes an automatic shutdown to conserve battery life. Designed with a durable, ergonomic body and a 26mm jaw opening, this tool is ideal for both industrial diagnostics and everyday electrical maintenance, making it a reliable choice for professionals and hobbyists alike.

Note: Batteries are not included with the device.

Key Features

• Automatic Range Selection: Eliminates manual range adjustments by automatically identifying the correct measurement range, ensuring efficiency and ease of use.
• 600A High Current Measurement: Measures current up to 600A, suitable for heavy-duty electrical systems and industrial applications.
• High-Quality Chip – Enhanced Accuracy: Incorporates an advanced chip with a high sampling rate (3 times per second) for fast, precise measurements.
• Versatile Measurement Capabilities: Supports AC voltage, AC current, resistance, NCV voltage detection, diode testing, and continuity checks.
• 6000 Counts Display: Provides high-resolution measurement output, ensuring accuracy for detailed diagnostic work.
• Intelligent Anti-Burnout Protection: Built-in overload protection enhances device safety and longevity.
• 26mm Large Jaw Design: Accommodates a variety of cable sizes, simplifying current measurements in complex setups.
• Non-Contact Voltage Detection (NCV): Ensures safe voltage detection with audible and visual alerts for user safety.
  • Alarm Sound: Emitted a slow beep at a distance of 2-5 cm.
  • Warning Light: Flashes rapidly at 0-1 cm proximity.
• Automatic Shutdown: Device powers off after 25 minutes of inactivity to conserve battery life.
• Built-In Flashlight & Backlight Display: Facilitates measurements in dim or dark environments.
• Data Hold Function: Retains the last reading for convenient reference.

Technical Specifications

Product Parameters

DC Voltage

• Input Resistance: 10MΩ
• Max Input Voltage: 600V DC or 600V rms AC

AC Voltage

• Input Resistance: 10MΩ
• Frequency Range: 40Hz ~ 400Hz
• Max Input Voltage: 600V DC or 600V rms AC

AC Current

• Frequency Range: 50Hz ~ 60Hz
• Max Input Current: 120% of full scale, less than 60s

Resistance

• Overload Protection: 600V DC or 600V rms AC

Diode Test

• Overload Protection: 600V DC or 600V rms AC

Continuity

• Overload Protection: 600V DC or 600V rms AC

Application

• Electrical maintenance and diagnostics
• Industrial and commercial electrical systems
• Home appliance servicing
• Automotive electrical troubleshooting
• Educational and laboratory use