GOSSEN METRAOHM 41 pieniohmimilliohmmimittari (M630A) - VDE 0413

Measures low resistance from 0.01 Ω to 19.99 Ω with 0.01 Ω resolution using a 4-wire Kelvin connection and 200 mA constant test current, compliant with VDE 0413 Part 4.

Overview

The METRAOHM 41 is a low-resistance ohmmeter for testing protective conductors, equipotential bonding, and other low-resistance connections. It features automatic zero adjustment and polarity reversal, and is powered by six AA batteries for approximately 2000 measurements.

What stands out

• 4-wire Kelvin measurement eliminates lead resistance for accurate low-resistance readings.
• Automatic polarity reversal compensates for thermal EMF.
• 3½ digit LCD display with clear readout.
• Overload protection and CAT III 300V safety rating.

Technical details

• Measurement range: 0.01 Ω to 19.99 Ω
• Resolution: 0.01 Ω
• Test current: 200 mA constant
• Accuracy: ±(1% of reading + 2 digits)
• Display: 3½ digit LCD
• Compliance: VDE 0413 Part 4 (EN 61557-4)
• Safety: EN 61010-1, CAT III 300V
• Power supply: 6 x 1.5 V AA batteries
• Battery life: approx. 2000 measurements
• Operating temperature: 0 °C to +40 °C
• Protection class: IP40 (housing), IP20 (terminals)
• Included accessories: 4-wire test leads, batteries, operating instructions

Our verdict

A dependable tool for low-resistance testing in electrical installations, meeting VDE 0413 requirements with straightforward operation and robust build quality.