Westinghouse Electric Corp. · Electronic Components
1299375
Tripper, Circuit Breaker
Part Number1299375
ManufacturerWestinghouse Electric Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-248-1437 (NSN)
Federal Item NameTRIPPER,CIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Pole Quantity3
Overall Width4.500 INCHES NOMINAL
Adjustable Trip Setting Current Ra+900.0 TO 1050.0 AC ALL LOCATIONS
Operating Voltage Type And Rating500.0 AC ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Frequency In Hertz60.0 ALL LOCATIONS
Trip Release CharacteristicINSTANTANEOUS AND TIME DELAY ALL LOCATIONS
Trip Delay Time In Seconds Per Rat600.000 MINIMUM AT 200 PCT AND 1440.000 MAXIMUM AT 200 PCT ALL LOCATIONS
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Overall Height3.750 INCHES NOMINAL
Features ProvidedADJUSTABLE TRIP RELEASE
Vendor Part Numbers1764-665
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 1299375 available?
We can source 1299375 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 1299375 by Westinghouse Electric Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1299375 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 1299375?
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 1299375?
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.