Westinghouse Electric Corp. · Electronic Components
S999189
Tripper, Circuit Breaker
Part NumberS999189
ManufacturerWestinghouse Electric Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-258-5049 (NSN)
Federal Item NameTRIPPER,CIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Pole Quantity2
Body StyleRECTANGULAR DIMENSIONAL ENVELOPE
Trip Delay Time In Seconds Per Rat92.000 MINIMUM AT 200 PCT AND 400.000 MAXIMUM AT 200 PCT ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Internal Trip Release ConfiguratioSERIES TRIP ALL LOCATIONS
Adjustable Trip Setting Current Ra+350.0 TO 1000.0 AC AND +350.0 TO 1000.0 DC ALL LOCATIONS
Features ProvidedADJUSTABLE TRIP RELEASE
Overall Width4.312 INCHES NOMINAL
Ultimate Trip Rating Of Continuous124.0 ALL LOCATIONS
Overall Height3.562 INCHES NOMINAL
Frequency In Hertz60.0 ALL LOCATIONS
Vendor Part Numbers45185PC31
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 S999189 available?
We can source S999189 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 S999189 by Westinghouse Electric Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If S999189 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 S999189?
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 S999189?
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.