The K-curve is designed for motor and inductive loads, tripping between 10× and 14× In, which means it handles inrush currents from motors and transformers without nuisance tripping. The S800 platform is a high-density DIN-rail mount design, so it slots into a standard panel enclosure alongside other modular devices.
ABB S803U-K90 MCB S800 3P K 90A, current lifecycle
MPNS803U-K90
ABB S803U-K90 MCB, S800 series, 3-pole, K-curve, 90 A, current lifecycle.
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
Where can I buy S803U-K90 and how do I get a price?
The S803U-K90 is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
What is S803U-K90's listed lifecycle stage?
The listed lifecycle stage for the S803U-K90 is current.
What is S803U-K90's listed description?
The listed description is ABBTB S803U-K90 MCB S800 3P K 90A.
MPN
S803U-K90