• Two ranges: 10 A (5 mA to 10 Aac) and 100 A (1 to 100 Aac)
• Voltage output: 1 mV/mA on the 10 A range, 1 mV/A on the 100 A range
• Accuracy: 3 percent of reading plus 0.15 mA (10 A range); 2 percent of reading plus 50 mA (100 A range)
• Connects to voltmeters and recorders with input impedance above 1 megohm
• Frequency range 48 Hz to 500 Hz
• Permanent overload: 15 A (10 A range), 150 A (100 A range)
• Jaw opening for conductors up to 0.39 in (10 mm); 5 ft (1.5 m) lead with two 4 mm safety banana plugs
• Safety IEC 61010-2-32: 300 V CAT IV, 600 V CAT III; IP40; AC measurement only

• Low-level and leakage-type AC current measurement where a standard clamp meter lacks resolution
• Secondary transformer and industrial circuit measurement
• Extending high-impedance voltmeters, DMMs, and recorders to clamp-on AC current
• Electrical maintenance in breaker and control panels rated up to 600 V CAT III

• Type: AC current probe (clamp), voltage output, Type A sensor
• Nominal ranges: 10 Aac and 100 Aac
• Measurement range: 5 mA to 10 Aac (10 A range); 1 to 100 Aac (100 A range)
• Output signal: 1 mV/mA (10 A range, 10 V at 10 A); 1 mV/A (100 A range, 100 mV at 100 A)
• Accuracy: 3 percent reading plus 0.15 mA (10 A range); 2 percent reading plus 50 mA (100 A range)
• Phase shift: not specified (per AEMC datasheet)
• Frequency range: 48 Hz to 500 Hz
• Overload: 15 A permanent (10 A range); 150 A permanent (100 A range)
• Working and common mode voltage: 600 VRMS
• Required meter input impedance: above 1 megohm; for rated accuracy use a voltmeter accurate to 0.75 percent or better
• Output termination: 5 ft (1.5 m) lead, two 4 mm safety banana plugs
• Maximum conductor size: 0.39 in (10 mm) diameter
• Dimensions: 4.43 x 1.48 x 1.02 in (112.5 x 37.5 x 26 mm); weight: 6.35 oz (180 g)
• Material: polycarbonate UL 94 V2
• Safety: IEC 61010-2-32, 300 V CAT IV, 600 V CAT III, Pollution Degree 2; IP40
• Replaces: Model MN103 (Cat. #1031.02)

The AEMC MN05 is a small AC current probe that turns a high-impedance voltmeter or data recorder into a clamp-on AC ammeter for low-level currents. Clamp it around a single conductor and it outputs a voltage proportional to the AC current: 1 mV/mA on the 10 A range and 1 mV/A on the 100 A range. Because the output is a voltage, the MN05 connects to any voltmeter, multimeter, or recorder with an input impedance above 1 megohm. To meet its rated accuracy, pair it with a voltmeter accurate to 0.75 percent or better.

Two ranges matter here. The 10 A range reads from 5 mA, which is what makes the MN05 useful for low-level and leakage-type AC current measurement where a standard clamp meter lacks resolution. The 100 A range covers general secondary and industrial circuits. The clothes-pin jaw fits conductors up to 0.39 in (10 mm), so it reaches into breaker and control panels.

The MN05 measures AC current only and does not measure DC. It replaces the discontinued Model MN103, so existing procedures carry over.