Page 129 - MCCB-XT5

ABB | SACE Tmax XT
Internal electronic accessories

1 - Rating Plug

The Rating Plug, supplied with the trip unit establishes the rated current In required by the measuring
range and for setting the current protections (with reference to In).
It is installed on a dedicated front connector which can be accessed by the user.
The trip unit continuously checks for the presence of the Rating Plug and signals its absence or any
assembly or installation errors.
If a new model is installed, the Trip unit displays the request for installation when first powered.
In Ekip Touch, field Nom.Curr in the About-Circuit breaker menu displays the In quantity read by the unit.

Replacement The module can be replaced by the user; any Rating Plug with maximum rated current equal to the current
of the sensor in the unit can be installed.
WARNING!
• with original Rating Plug less than or equal to 400 A it is possible to mount models up
to 400 A
• models up to 250 A at 630 A can be installed if the original Rating Plug is 500 A or 630 A
Further details about assembly and the Rating Plug installation procedure are available in ABB Library,
particularly in document 1SdH002011A1505.
IMPORTANT: to avoid alarms or undesired trips, the Rating Plug must be replaced when
Trip unit is off, the CB open and in the absence of primary currents and voltages.

127 | © 2022 ABB | 1SDH002039A1002 - ECN000212994 Internal electronic accessories | 1 - Rating Plug