ETA Circuit Breakers · Electronic Components
4120-G111-K1M1-A1S0ZN-20A
Circuit Breaker
Part Number4120-G111-K1M1-A1S0ZN-20A
ManufacturerETA Circuit Breakers
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-666-3315 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Overall Height1.948 INCHES MINIMUM
Bushing Length0.512 INCHES NOMINAL
Body StyleSINGLE POLE TYPE
Center To Center Distance Between0.504 INCHES NOMINAL
Mounting Surface To Terminal End D1.22 INCHES NOMINAL
Body Width0.555 INCHES NOMINAL
Pole Quantity1
Body Length0.766 INCHES NOMINAL
Terminal Type And Quantity2 SCREW
Manual Actuator Type And Quantity1 PUSH-PULL
Thread Series DesignatorM
Vendor Part Numbers3891442
ESD/EMICode A — 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 4120-G111-K1M1-A1S0ZN-20A available?
We can source 4120-G111-K1M1-A1S0ZN-20A 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 4120-G111-K1M1-A1S0ZN-20A by ETA Circuit Breakers obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4120-G111-K1M1-A1S0ZN-20A 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 4120-G111-K1M1-A1S0ZN-20A?
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 4120-G111-K1M1-A1S0ZN-20A?
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.