What it is, in plain terms
The ABB 1SDA048964R1 is the PR010/T test unit for the Emax air circuit-breaker family, weighing 2.06 kgs. It is not a backplane-resident I/O card; the PLC Expansion Modules listing reflects taxonomy only.

ABB 1SDA048964R1, Emax series PR010/T test unit, 2.06 kgs, catalogued under PLCs and Accessories / PLC Expansion Modules.
| Parameter | Value |
|---|---|
| Weight | 2.06 kgs |
The ABB 1SDA048964R1 is the PR010/T test unit for the Emax air circuit-breaker family, weighing 2.06 kgs. It is not a backplane-resident I/O card; the PLC Expansion Modules listing reflects taxonomy only.
No — the two parts are not in the same device class. The 1SVR427071R0000 peer weighs 0.86 kgs against this unit's 2.06 kgs and sits in a different functional slot; a swap would not be transparent to the trip-unit side.
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