MIL-SPEC · Electronic Components
AQB-A400-400K
Circuit Breaker
Part NumberAQB-A400-400K
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-181-8981 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Mounting Facility Type And Quantit6 UNTHREADED HOLE(S)
Center To Center Distance Between3.000 INCHES NOMINAL
Main Contact Tripping Mechanism TyTRIP FREE
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Trip Release CharacteristicTIME DELAY ALL LOCATIONS
Maximum Interrupting Capacity Curr100000.0 AC AND 150000.0 DC ALL LOCATIONS
Ultimate Trip Rating Of Continuous130.0 ALL LOCATIONS
Fragility FactorMODERATELY RUGGED
Pole Quantity3
Operating Voltage Type And Rating500.0 AC AND 335.0 DC ALL LOCATIONS
Distance Between Centerlines Of Mo3.000 INCHES NOMINAL
Cancelled NSN5925-00-110-0147 (cancelled)
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 AQB-A400-400K available?
We can source AQB-A400-400K 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 AQB-A400-400K by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If AQB-A400-400K 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 AQB-A400-400K?
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 AQB-A400-400K?
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.