ABB product details:

group:mms
code:1SAM150000R1013
type:MS 325 - 20 In = 16... 20 (A), Ics a 400 V = 55 (kA)
Current:20
Range:16 ... 20
Production:discontinued
AuxiliaryContact:n/a
Isc 400VAC [kA]:55
Protection:Thermomagnetic
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