Schneider Electric USA · Electronic Components
AR5.3
Heater, Thermal Release
Part NumberAR5.3
ManufacturerSchneider Electric USA
AvailabilityAvailable to order — request a quote
Specifications
NSN5999-00-779-1105 (NSN)
Federal Item NameHEATER,THERMAL RELEASE
Federal Supply Class5999 — Miscellaneous Electrical Components
Overall Height1.408 INCHES NOMINAL
Overall Width0.501 INCHES NOMINAL
Overall Length1.846 INCHES NOMINAL
Current Rating For Which Designed4.1 AMPERES MINIMUM AND 4.6 AMPERES MAXIMUM
Cancelled NSN5999-00-677-4067 (cancelled)
ESD/EMICode B — ESD/EMI sensitive item
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 AR5.3 available?
We can source AR5.3 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 AR5.3 by Schneider Electric USA obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If AR5.3 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 AR5.3?
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 AR5.3?
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.