The IEC 61010 standard defines overvoltage categories (also known as electrical safety categories) for low-voltage installations (< 1000 V). These categories classify the different parts of electrical circuits according to their risk of overvoltage and consequent level of danger.
There are four overvoltage categories:
CAT I: Electronic devices
CAT II: Equipment connected to single-phase outlets, such as household appliances
CAT III: Three-phase distribution...
digital multimeter
473320
... Ergonomically shaped two-component casing with rubber cover. Large easy-to-read digital display with switchable background lighting. Auto ranging meters. All meters with test prod mounting on the rear for one-hand operation, with a stand. Application: Digital ...
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