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MA430-en-GB_V1.3   10/16 

Operation 

NOTES

: Read and understand all 

Warning

 and 

Caution

 statements in this operation manual prior 

to using this meter. Set the function select switch to the OFF position when the meter is not in use. 
 

Non-Contact Voltage Detector 

WARNING:  

Risk of Electrocution. Before use, always test the Voltage Detector on a known live 

circuit to verify proper operation

1. 

Rotate the Function switch to any position. 

2. 

Place the detector probe tip on the conductor to be tested. 

3. 

If AC voltage is present, the NCV detector light will turn on with a 
steady red light. 

NOTE

: The conductors in electrical cord sets are often twisted. For best 

results, move the probe tip along a length of the cord to assure 
placing the tip in close proximity to the live conductor. 

NOTE

: The detector is designed with high sensitivity. Static electricity or other sources of energy 

may randomly trip the sensor. This is normal operation. 

 
 
 

AC Current Measurements  

 

WARNING: 

Disconnect the test leads before making clamp measurements. 

 

1.  Rotate the Function switch to the 

400A 

position 

2.  Press the trigger to open jaw. Fully enclose only one 

conductor. 

3.  Read the current value in the display. 
4.  If the value is less than 200A, rotate the function switch to a 

lower range to improve resolution. 

 

 

 

 

Summary of Contents for MA430

Page 1: ...User Manual 400Amp AC Clamp Meter NCV Model MA430 Additional User Manual Translations available at www extech com...

Page 2: ...th or serious injury This CAUTION symbol indicates a potentially hazardous situation which if not avoided may result damage to the product PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY OVERVOLTAGE CAT...

Page 3: ...ways remove the test leads before replacing the battery or fuses Inspect the condition of the test leads and the meter itself for any damage before operating the meter Repair or replace any damage bef...

Page 4: ...E select button 8 COM input jack 9 Rotary Function switch 10 Backlight button 11 Range button 12 MAX button 13 V Hz jack 14 Battery Cover rear Display icons Description HOLD Data Hold AUTO Autoranging...

Page 5: ...light will turn on with a steady red light NOTE The conductors in electrical cord sets are often twisted For best results move the probe tip along a length of the cord to assure placing the tip in clo...

Page 6: ...oltage value in the display Resistance Diode Continuity Measurements Note Remove power from the device under test before making resistance measurements 1 Set the function switch to the position 2 Inse...

Page 7: ...e AUTO icon will turn of 2 Press the RANGE button to step through the available ranges until the range needed appears 3 Press and hold the RANGE button for 2 seconds to exit the Manual Ranging mode an...

Page 8: ...attery cover 2 Open the battery compartment 3 Replace the 9V battery 4 Secure the battery compartment door Never dispose of used batteries or rechargeable batteries in household waste As consumers use...

Page 9: ...1A 3 0 4 digits AC Voltage 50 to 60Hz 200 0mV 0 1mV 1 5 30 digits 2 000 V 0 001V 1 8 8 digits 20 00 V 0 01V 200 0 V 0 1V 600 V 1V 2 5 8 digits DC Voltage 200 0 mV 0 1mV 0 8 2 digits 2 000 V 0 001V 1...

Page 10: ...5 C to 40 C 41 F to 104 F Storage Temperature 20 C to 60 C 4 F to 140 F Operating Humidity Max 80 up to 31 C 87 F decreasing linearly to 50 at 40 C 104 F Storage Humidity 80 Operating Altitude 2000met...

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