Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making itIn order to qualify the contactor
power all users asked about its rated current. Some of them know that the contactor
have two ratings. Less of them know that the contactor current should be identified
as (AC1 or AC3). This identification called UTILISATION CATEGORY for
Alternating Current applications.

For more specifications, utilization
categories are deferent levels of ratings that identify the contactor capacity
for specific loads. For that it will be very helpful to use the AC1 rating for resistive
loads (cheaper) and use AC3 ratings for motor starters (dependable). The same
thing for the Direct Current applications

Both of the two categories are the
most famous ratings.

Furthermore, there are many other
ratings and all of them are for the same contactor but for other application.
These categories are identified through standard IEC60947 as following:-

Alternating current:

Direct current:

For contactor relays, circuit breakers and
switch dis-connectors also, other categories are used. We may talk about in
other article.

GOOD DAY,

Smart Solutions.