MIL-SPEC · Electronic Components
MS3320-20
CIRCUIT BREAKER, 20 AMP *
Part NumberMS3320-20
ManufacturerMIL-SPEC
AvailabilityIn stock — ships fast
Specifications
NSN5925-00-407-1952 (NSN)
Federal Item NameCIRCUIT BREAKER
Terminals2 SCREW
Body StyleSINGLE POLE TYPE
Nominal Thread Size0.438 INCHES
Reset MethodMANUAL
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Operating Voltage Type And Rating200.0 AC SINGLE LOCATION
Ultimate Trip Rating Of Continuous138.0 SINGLE LOCATION
Maximum Interrupting Capacity Curr1500.0 AC SINGLE LOCATION
Manual Actuator Type And Quantity1 PUSH-PULL
Inclosure Protection Type For WhicMOISTURE RESISTANT AND EXPLOSION RESISTANT
Federal Supply Class5925 — Circuit Breakers
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 MS3320-20 in stock?
Yes — MS3320-20 is in our stock database. Request a quote for current pricing and lead time.
Is MS3320-20 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MS3320-20 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 MS3320-20?
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 MS3320-20?
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.