ABB Control · Electronic Components
S203U-K50
Circuit Breaker
Part NumberS203U-K50
ManufacturerABB Control
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-708-0915 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Overall Width55.0 MILLIMETERS NOMINAL
Arc Quenching MethodAIR
Operating Voltage Type And Rating240.0 AC ALL LOCATIONS
Reset MethodAUTOMATIC
Body StyleMULTIPOLE-MULTIPLE ACTUATOR TYPE
Pole Quantity3
Mounting Facility Type And Quantit1 DIN RAIL
Trip Release CharacteristicINSTANTANEOUS ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Maximum Continuous Load Current Ra50.0 AMPERES AC ALL LOCATIONS
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
ESD/EMICode A — ESD/EMI sensitive item
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is S203U-K50 available?
We can source S203U-K50 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is S203U-K50 by ABB Control obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If S203U-K50 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like S203U-K50?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for S203U-K50?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.