CHINT M3M Frame Size 400A (MCP),
M3M
– 400 A offers a range of interrupting voltage ratings from 240-600 Vac. This
series MCP conforms to global standards that include UL 489, CSA C22.2
No 5 and IEC 60947-2.
The traditional system used for this purpose is based on three different
devices: a circuit breaker for protection against short-circuit, a thermal
relay for protection against overload and phase loss or unbalance of
phase, and a contactor for motor switching.
In particular, when selecting these devices, different factors must be
taken into consideration, such as:
• The motor power
• The diagram and type of starting
• The type of motor: with cage rotor or with wound rotor
• The fault current at the point of the network where the motor is
installed
All
