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600 A True RMS Clamp Meters
and Non-Contact Voltage
HHM-MA640
U True RMS for Accurate
Readings of NonSinusoidal Waveforms
U Built-In Non-Contact
Voltage Detector with
LED Alert
U 40 mm (1.5") Jaw Size
for Conductors up
to 500 MCM
U 6000 Count, Backlit LCD
U Includes Multimeter
Functions
U Measures DC Current
U Relative Mode for
Capacitance Zero and
Offset Adjustment
U Data Hold, Min/Max, and
Auto Power Off
The HHM-MA640 is a true RMS
clamp meter. This meter measures
AC current, DC current, AC/DC
voltage, resistance, capacitance,
frequency, diode test, duty cycle
and continuity. The molded case
is designed for heavy duty use.
The integrated non-contact voltage
detector quickly checks for the
presence of live wires before
testing needs to be started.
HHM-MA640
shown smaller
than actual size.
Q
Built-in non-contact voltage
detector with LED alert.
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FREE
Thermocouple Included!
All models include a free 900 mm (36") Type
K insulated beaded wire thermocouple with
subminiature connector and wire spool caddy.
Order a Spare! Model No. SC-GG-K-30-36
Basic Accuracy
Specifications Range Max Resolution (% readings+digits)
Clamp Jaw Opening 40 mm (1.5") approx. — —
Display Counts 6000 backlit LCD — —
Input Impedance 10M Ω (Vdc and Vac) — —
Measurement Rate 2 readings per second, nominal — —
AC Current Bandwidth 50/60 Hz — —
AC Voltage Bandwidth 50 to 400 Hz — —
AC Response True RMS (AAC and Vac) — —
Crest Factor
(50/60 Hz and 5 to 100% of range)
3.0 in 60A and 600A ranges,
AC Current (True RMS) 60.00A, 600.0A 0.01A ±(2.8% + 8d)
DC Current (MA640 only) 60.00A, 600.0A 0.01A ±(2.8% + 8d)
AC Voltage (True RMS) 6.000V, 60.00V, 600.0V 0.001V ±(1.8% + 8d)
DC Voltage 600.0mV, 6.000V, 60.00V, 600.0V 0.1 mV ±(1.5% + 2d)
Resistance
600.0 KΩ, 6.000M Ω, 60.00M Ω 0.1Ω ±(1.0% + 4d)
600.0 Ω, 6.000 KΩ, 60.00 KΩ,
Frequency 10Hz to 10kHz 0.01nF ±(3.0% + 5d)
Capacitance
400.0μF, 4000μF 0.01nF ±(3.0% + 5d)
40.00nF, 400.0nF, 4.000μF, 40.00μF,
Temperature -20 to 760°C (-4 to 1400°F) 0.1° ±(3% + 9°F/5°C)
Thermocouple Sensor Type K thermocouple required
Duty Cycle 0.5 to 99.0% 0.1% ±(1.2% + 2d)
Open circuit voltage 2.8 Vdc typical
Test current of 0.9 mA typical;
Diode
Continuity Threshold 60Ω; Test current < 0.35mA — —
Operating Temperature 5 to 40°C (41 to 104°F) — —
Storage Temperature -20 to 60°C (-4 to 140°F) — —
Operating Humidity
decreasing linearly to 50% at 40°C (104°F)
Max 80% up to 31°C (87°F)
Storage Humidity <80% — —
Operating Altitude 2000 m (7000') max — —
Dimensions 232 L x 77 W x 39 mm D (9.1 x 3 x 1.5") — —
Low Battery Indication Battery symbol is displayed — —
Over-Range Indication ‘OL’ display — —
Auto Power OFF After approx. 15 minutes, with disable — —
Weight 271 g (9.6 oz) — —
For indoor use and in accordance
with the requirements for double insulation
Safety to IEC1010-1 (2001): EN61010-1 (2001) — —
Overvoltage Category III 600V
and Category II 1000V, Pollution Degree 2
40 mm (1.5") jaw size
for conductors up to
500MCM.
— —
— —
To Order Visit omega.com/hhm-ma640 for Pricing and Details
Model No. Description
HHM-MA640 600A True RMS AC/DC clamp meter with non-contact voltage
Comes complete with test leads, general purpose Type K bead wire temperature probe, 9V battery, carrying case and operator’s manual.
Ordering Example: HHM-MA640, 600A true RMS AC/DC clamp meter with non-contact voltage.
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