CSA C22.2 NO. 60947-4-2:14 (R2019) PDF Download

CSA C22.2 NO. 60947-4-2:14 (R2019) is a standard that focuses on low-voltage switchgear and controlgear, specifically contactors and motor-starters, with an emphasis on AC semiconductor motor controllers and starters. The standard applies to controllers and starters that are intended to be connected to circuits with a rated voltage not exceeding 1,000 V AC.

This standard includes requirements for controllers and starters with and without bypass means. It is important to note that these devices are not designed to interrupt short-circuit currents, so suitable short-circuit protection should be part of the installation, but not necessarily part of the controller or starter itself. The standard also specifies that contactors, overload relays, and control circuit devices used in these controllers and starters should comply with their relevant product standards.

The main objective of this standard is to define the characteristics of controllers and starters and associated equipment, establish the conditions they must comply with regarding their operation, behavior, dielectric properties, and construction, provide guidelines for tests to confirm compliance with these conditions, and outline the necessary information to be provided with the equipment or in the manufacturer's literature.

In addition to the main scope and objectives, the standard includes modifications related to circuit breakers, disconnect switches, fuses, and molded case switches used as short-circuit protective devices in combination starters and protected starters. These modifications specify the requirements that these devices must meet.