Extech MN16 Digital-Multimeter, DMM, LCD MN16A Fiche De Données

MN16-EU  V1.3    7/08 

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Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in 
which measures are taken to limit the transient overvoltages to an appropriate low level. 

Note – Examples include protected electronic circuits. 
OVERVOLTAGE CATEGORY II 

Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be 
supplied from the fixed installation. 

Note – Examples include household, office, and laboratory appliances. 
OVERVOLTAGE CATEGORY III 

Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations. 

Note – Examples include switches in the fixed installation and some equipment for industrial 
use with permanent connection to the fixed installation. 
OVERVOLTAGE CATEGORY IV 

Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation. 

Note – Examples include electricity meters and primary over-current protection equipment 
 

 

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