REED R5050 1000A True RMS AC/DC Clamp Meter


This durable True RMS clamp meter is capable of measuring AC/DC current and voltage, resistance and frequency. Featuring a 4,000 count LCD display with a 42-segment analog bargraph, the R5050 includes a peak hold and min/max functions.


  • Measures AC/DC current/voltage, resistance and frequency
  • 4000-count LCD display with analog bargraph
  • Low battery and overrange indicators
  • True RMS measurements
  • Min/Max, display hold, peak hold and relative mode
  • Diode test and continuity check functions
  • Cat. III 600V, Cat. II 1000V safety rating


AC/DC Current
Range40, 400, 1000A
AccuracyAC: ±(1.9% rdg. +5 dgt.)
DC: ±(2.5% rdg. +10 dgt.)
Resolution0.01, 0.1, 1A
AC/DC Voltage
RangeAC: 400, 750V
DC: 400, 1000V
AccuracyAC: ±(1.5% rdg. +5 dgt.)
DC: ±(1% rdg. +2 dgt.)
Resolution0.1, 1V
Range400, 4000Ω
Accuracy±(1% rdg. +3 dgt.)
0.1, 1Ω
Range4kHz, 10kHz
Accuracy±(0.1% rdg. +1 dgt.)
Resolution1Hz, 10Hz
General Specifications
Range SelectionAutoranging / Manual
True RMSYes 
Display4,000 count LCD display
Display HoldYes
Peak HoldYes
Zero Push Button AdjustmentYes
Relative ModeYes
Diode TestYes
Analog BargraphYes (42-segment)
Continuity CheckAudible signal if resistance <100Ω
Autoshut offYes (after 30 mins)
Power Supply9V Battery
Low Battery IndicatorYes
Jaw Opening1.5" (40mm), up to 500 MCM
Overvoltage CategoryCAT. III 600V, CAT. II 1000V
Product CertificationsCE
Operating Temperature32 to 104°F (0 to 40°C)
Storage Temperature14 to 140°F (-10 to 60°C)
Dimensions9.5x 2.6 x 1.4" (242 x 66 x 36 mm)
Weight14oz (400g)