Littelfuse · Electronic Components
81503.5
Circuit Breaker
Part Number81503.5
ManufacturerLittelfuse
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-204-6094 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Body StyleSINGLE POLE TYPE
Reset MethodMANUAL
Maximum Continuous Load Current Ra3.5 AMPERES AC SINGLE LOCATION
Main Contact Tripping Mechanism TyTRIP FREE
Maximum Interrupting Capacity Curr50.0 AC SINGLE LOCATION
Operating Voltage Type And Rating125.0 AC SINGLE LOCATION
Fragility FactorMODERATELY RUGGED
Center To Center Distance Between0.453 INCHES NOMINAL
Pole Quantity1
Mounting Surface To Terminal End D0.844 INCHES NOMINAL
Storage TypeGENERAL PURPOSE WAREHOUSE
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 81503.5 available?
We can source 81503.5 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 81503.5 by Littelfuse obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 81503.5 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 81503.5?
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 81503.5?
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.