DRS Naval Power Systems · Electronic Components
976-1-1X21PC1B
Tripper, Circuit Breaker
Part Number976-1-1X21PC1B
ManufacturerDRS Naval Power Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-628-7769 (NSN)
Federal Item NameTRIPPER,CIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Overall Width4.000 INCHES NOMINAL4.000 INCHES NOMINAL
Overall Height3.875 INCHES NOMINAL3.875 INCHES NOMINAL
Trip Release CharacteristicINSTANTANEOUS AND TIME DELAY ALL LOCATIONS
Ultimate Trip Rating Of Continuous105.0 ALL LOCATIONS
Maximum Continuous Load Current Ra50.0 AMPERES AC ALL LOCATIONS
Operating Voltage Type And Rating500.0 AC ALL LOCATIONS
Mounting Facility Type And Quantit6 UNTHREADED HOLE(S)6 UNTHREADED HOLE(S)
Unthreaded Mounting Hole Diameter0.312 INCHES MINIMUM AND 0.312 INCHES MINIMUM AND 0.375 INCHES MAXIMUM0.375 INCHES MAXIMUM
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Features ProvidedADJUSTABLE TRIP RELEASEADJUSTABLE TRIP RELEASE
Trip Delay Time In Seconds Per Rat25.000 NOMINAL AT 600 PCT ALL LOCATIONS
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 976-1-1X21PC1B available?
We can source 976-1-1X21PC1B 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 976-1-1X21PC1B by DRS Naval Power Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 976-1-1X21PC1B 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 976-1-1X21PC1B?
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 976-1-1X21PC1B?
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.