Sensata Technologies Maryland, Inc. · Electronic Components
521A402
Circuit Breaker
Part Number521A402
ManufacturerSensata Technologies Maryland, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-226-1036 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Ultimate Trip Rating Of Continuous125.0 SINGLE LOCATION
Maximum Interrupting Capacity Curr500.0 AC SINGLE LOCATION
Reset MethodMANUAL
Body StyleSINGLE POLE TYPE
Maximum Continuous Load Current Ra4.0 AMPERES AC SINGLE LOCATION
Pole Quantity1
Thread Quantity Per Inch32
Fragility FactorMODERATELY RUGGED
Storage TypeUNIMPROVED OPEN
Mounting Surface To Terminal End D1.500 INCHES NOMINAL
Center To Center Distance Between0.687 INCHES NOMINAL
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 521A402 available?
We can source 521A402 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 521A402 by Sensata Technologies Maryland, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 521A402 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 521A402?
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 521A402?
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.