How to select power supply rating for Schneider Electric contactor according to coil VA burden

Schneider Electric contactor inrush peaks can reach 10 to 20 times the required holding current. This leads to the transformer being oversized in relation to the continuous power it has to supply.

EasyPact TVS thermal overload relay : 0.1-630A thermal overload relay

EasyPact TVS Thermal Overload Relays (from 0.1 to 630 A) compatible with EasyPact TVS contactors up to 630 A.

In the standard Blok Set MCC coordination tables, the type of overload

relays used is class 10 only. If customer specifies class 20 or class 30,

what should we do?

Depending on the application, the motor starting time can vary from a few seconds (for no-load starting, low resistive torque, etc.) to several tens of seconds (for a high resistive torque, high inertia of the driven load, etc.). It is therefore necessary to fit relays appropriate to the starting time. To meet this requirement, IEC Standard 60947-4-1 defines several classes of overload relays, each characterized by its tripping curve. Safety limit switches XCS – XCSR RFID safety switches XCSRC*1AM12 standalone model with automatic start : is it possible to use it without EDM loop

The XCSRC standalone model with automatic start XCSRC*1AM12 can be used without the EDM loop. See attached wiring diagram. This disposition has an impact on the Performance Level or safety level of the solution (contactors not monitored)

Molded Case Circuit Breakers – MCCBs

Schneider Electric India's ranges of Molded Case Circuit Breaker devices for industrial applications provide unique and customized solutions depending on different load requirements. The different ranges of MCCB's are among the most sophisticated industrial circuit breakers available in the country.