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The device is designated 3BHE026955R0633 , also referred to as UNS4017A-E Var. 633 in ABB’s product nomenclature.It is a
thyristor stack / thyristor module / package used in high-power / high-voltage applications. ABB labels it as a
“Thyristor Packet / Module.”The module is manufactured by ABB (Switzerland / global ABB power
electronics division) and appears in their low-voltage /
power electronics product listings.
Crowbar Thyristor Stack Capability: It is specifically referenced in a “crowbar thyristor stack” specification, meaning it is used to clamp or short
for protection in fault conditions (crowbar circuit).
ABB Quality / Industrial Grade:As an ABB part, it likely meets industrial reliability, standardized packaging, robust thermal
and mechanical design, and safety margins.
Industrial / OEM Replacement:It is offered as an OEM spare / module, as seen in ABB’s product listings,
meaning it is intended to replace or integrate with existing ABB /
compatible power electronics systems.
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