Klein Tools Klein Tools MM400 Manual
ENGLISH
Auto-Ranging
Digital Multimeter
600V
10A
40M
INSTRUCTION MANUAL
• DATA HOLD
• AUDIBLE
CONTINUITY
• MIN / MAX
• TEMPERATURE
• DIODE TEST
• CAPACITANCE
MM400
Ω
ENGLISH
GENERAL SPECIFICATIONS
Klein Tools MM400 is an auto-ranging multimeter that measures AC/DC
voltage, AC/DC current, and resistance. It can also measure temperature,
capacitance, frequency, duty-cycle, and test diodes and continuity.
• Operating Altitude: 6562 ft. (2000m)
• Relative Humidity: <80% non-condensing
• Operating Temp: 32°F to 104°F (0°C to 40°C)
• Storage Temp: 14°F to 140°F (-10°C to 60°C)
• Accuracy: Values stated at 65°F to 83°F (18°C to 28°C)
• Temp Coef cient: 0.1 x (Quoted Accuracy) per °C above
28°C or below 18°C, corrections are required when ambient
working temp is outside of Accuracy Temp range
• Dimensions: 6.04" x 3.07" x 1.78" (153.4 x 78.0 x 45.2 mm)
• Weight: 8.1 oz. (230 g)
• Calibration: Accurate for one year
• Standards: Conforms to: UL STD 61010-1, 61010-2-030,
61010-2-033.
Certified to: CSA STD C22 2 # 61010-1,
61010-2-030, 61010-2-033.
IEC EN 61010-1, 61010-2-030,
61010-2-033, 61326-1.
• Pollution degree: 2
• Accuracy: ± (% of reading + # of least significant digits)
• Drop Protection: 3.3 ft. (1m)
• Safety Rating: CAT III 600V, Class 2, Double insulation
CAT III: Measurement category III is applicable to test and
measuring circuits connected to the distribution part of the
building’s low-voltage MAINS installation.
• Electromagnetic Environment: IEC EN 61326-1. This
equipment meets requirements for use in basic and controlled
electromagnetic environments like residential properties,
business premises, and light-industrial locations.
Specifications subject to change.
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
2
ELECTRICAL SPECIFICATIONS
VOLTAGE (AUTO-RANGING)
Function Range Resolution Accuracy
4.000V 1mV ±(1.2% + 5 digits)
AC Voltage
(V AC)
DC Voltage
(V DC)
Input Impedance: 10MΩ
Frequency Range: 50 to 60Hz
Maximum Input: 600V AC RMS or 600V DC
40.00V 10mV
400.0V 100mV
600V 1V ±(2.0% + 5 digits)
400.0mV 0.1mV ±(1.0% + 8 digits)
4.000V 1mV
400.0V 100mV
600V 1V ±(1.5% + 3 digits)
±(1.5% + 5 digits)
±(1.2% + 3 digits)40.00V 10mV
CURRENT (AUTO-RANGING)
400.0μA 0.1μA ±(1.5% + 5 digits)
AC Current
(μA and mA)
DC Current
(μA and mA)
Overload Protection: 500mA / 600V and 10A / 600V Fuses
Frequency Range: 50 to 60Hz
Maximum Input: µA/mA setting: 500mA AC RMS / DC
10A setting: 10A AC RMS / DC
4000μA 1μA
±(1.8% + 5 digits)40.00mA 10μA
400.0mA 100μA
10A 10mA ±(3.0% + 7 digits)
400.0μA 0.1μA ±(1.0% + 5 digits)
4000μA 1μA
±(1.5% + 5 digits)40.00mA 10μA
400.0mA 100μA
10A 10mA ±(3.0% + 7 digits)
RESISTANCE (AUTO-RANGING)
Range Resolution Accuracy
400.0Ω 0.1Ω
4.000kΩ 1Ω
40.00kΩ 10Ω
400.0kΩ 100Ω
4.000MΩ 1kΩ
40.00MΩ 10kΩ
Maximum Input: 600V DC or 600V AC RMS
±(1.5% + 5 digits)
±(2.0% + 10 digits)
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ENGLISH
ELECTRICAL SPECIFICATIONS
CAPACITANCE (AUTO-RANGING)
Range Resolution Accuracy
40.00nF 10pF ±(5.0% + 35 digits)
400.0nF 0.1nF
±(3.0% + 5 digits)4.000μF 1nF
40.00μF 10nF
200.0μF 0.1μF ±(5.0% + 5 digits)
Maximum Input: 600V DC or 600V AC RMS
FREQUENCY (AUTO-RANGING)
9.999Hz 0.001Hz
99.99Hz 0.01Hz
999.9Hz 0.1Hz
50.00kHz 10Hz
Sensitivity: >8V RMS
Maximum Input: 600V DC or 600V AC RMS
±(1.5% + 5 digits)
±(1.3% + 5 digits)9.999kHz 1Hz
DUTY CYCLE
0.1% to 99.9%
Pulse width: >100us, <100ms
Frequency width: 5Hz to 10kHz
Sensitivity: >8V RMS
Maximum Input: 600V DC or 600V AC RMS
0.1% ±(1.2% + 2 digits)
TEMPERATURE
0° to 1000°F 0.1°F / 1.0°F ±(3.0% + 9°F)
-18° to 538°C 0.1°C / 1.0°C ±(3.0% + 5°C)
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ELECTRICAL SPECIFICATIONS
• Diode Test: 1.5 mA max, open circuit voltage 3.0V DC
• Continuity Check: Audible signal <50Ω
• Sampling Frequency: 3 samples per second
• Overload: "OL" indicated on display, overload protection
600V RMS in all settings
• Polarity: "-" on display indicates negative polarity
• Display: 3 ¾ digit, 4000 Count LCD
WARNINGS
To ensure safe operation and service of the meter, follow these
instructions. Failure to observe these warnings can result in
severe injury or death.
• Before each use verify meter operation by measuring a known
voltage or current.
• Never use the meter on a circuit with voltages that exceed the
category based rating of this meter.
• Do not use the meter during electrical storms or in wet weather.
• Do not use the meter or test leads if they appear to be damaged.
• Use only with CAT III or CAT IV rated test leads.
• Ensure meter leads are fully seated, and keep fingers away
from the metal probe contacts when making measurements.
• Do not open the meter to replace batteries while the probes
are connected.
• Use caution when working with voltages above 25V AC RMS
or 60V DC. Such voltages pose a shock hazard.
• To avoid false readings that can lead to electrical shock,
replace batteries when a low battery indicator appears.
• Do not attempt to measure resistance or continuity on a live
circuit.
• Always adhere to local and national safety codes. Use personal
protective equipment to prevent shock and arc blast injury
where hazardous live conductors are exposed.
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
5
ENGLISH
SYMBOLS ON METER
AC/DC Voltage or Current Resistance (in Ohms)
Audible Continuity Diode
Capacitance
Duty-cycle Double Insulated Class II
%
Temperature (Fahrenheit / Celsius) Ground
°F/°
C
Fuse (with rating below symbol)
Warning or Caution
Hz
Frequency
To ensure safe operation and service of this meter, follow all warnings
and instructions detailed in this manual.
Risk of Electrical Shock
Improper use of this meter can lead to risk of electrical shock. Follow
all warnings and instructions detailed in this manual.
SYMBOLS ON LCD
Data Hold Audible Continuity
H
Diode Auto Ranging
AC (Alternating Current) DC (Direct Current)
Low Battery Auto Power Off
MAX
Maximum Value
°F
Degrees Fahrenheit
M
Mega (value x 106)
m
mili (value x 10-3)
n
nano (value x 10-9)
A
Amps
Ohms
%
Duty-Cycle
MIN
Minimum Value
°C
Degrees Celsius
k
kilo (value x 103)
μ
micro (value x 10-6)
V
Volts
F
Farads
Hz
Hertz (Frequency)
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