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4990D03G28 — CIRCUIT BREAKER

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

4990D03G28: CIRCUIT BREAKER.

The CIRCUIT BREAKER is a the manufacturer industrial component. Key specifications include material: PLASTIC CASE, body_style: MULTIPOLE-MULTIPLE ACTUATOR TYPEMULTIPOLE-MULTIPLE ACTUATOR TYPE, body_width: 2.750 INCHES NOMINAL2.750 INCHES NOMINAL IN, body_length: 6.000 INCHES NOMINAL6.000 INCHES NOMINAL IN, reset_method: MANUALMANUAL, storage_type: GENERAL PURPOSE WAREHOUSEGENERAL PURPOSE WAREHOUSE. This part is cataloged in the U.S.

Government catalog under NSN 5925-00-262-5672, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 4990D03G28
NSN: 5925-00-262-5672
FSC: 5925 — Circuit Breakers
CAGE: 89946 — EATON CORPORATION DBA EATON INOAC (USA)
SPECIFICATIONS
materialPLASTIC CASE
body_styleMULTIPOLE-MULTIPLE ACTUATOR TYPEMULTIPOLE-MULTIPLE ACTUATOR TYPE
body_width2.750 INCHES NOMINAL2.750 INCHES NOMINAL IN
body_length6.000 INCHES NOMINAL6.000 INCHES NOMINAL IN
reset_methodMANUALMANUAL
storage_typeGENERAL PURPOSE WAREHOUSEGENERAL PURPOSE WAREHOUSE
pole_quantity22
bushing_length0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
fragility_factorMODERATELY RUGGEDMODERATELY RUGGED
actuator_functionTRIP-RESETTRIP-RESET
frequency_in_hertz60.0 ALL LOCATIONS60.0 ALL LOCATIONS
trip_release_methodTHERMAL-MAGNETIC ALL LOCATIONSTHERMAL-MAGNETIC ALL LOCATIONS
NSN5925-00-262-5672
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CIRCUIT BREAKER TITLE COMPONENT PN 4990D03G28 MFR CIRCUIT BREAKER
KEY FEATURES
•
BUSHING LENGTH: 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
•
RESET METHOD: MANUALMANUAL
•
OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS: 240.0 AC AND 240.0 AC AND 250.0 DC ALL LOCATIONS250.0 DC ALL LOCATIONS
•
MOUNTING FACILITY TYPE AND QUANTITY: 2 UNTHREADED HOLE(S)2 UNTHREADED HOLE(S)
•
ACTUATOR POSITION DESIGNATION: AT POLE TWOAT POLE TWO
•
FREQUENCY IN HERTZ: 60.0 ALL LOCATIONS60.0 ALL LOCATIONS
•
UNPACKAGED UNIT WEIGHT: 3.000 POUNDS NOMINAL3.000 POUNDS NOMINAL LBS
•
CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO WIDTH: 1.375 INCHES NOMINAL1.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
BUSHING LENGTH0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
RESET METHODMANUALMANUAL
OPERATING VOLTAGE TYPE AND RATING PER POLE IN VOLTS240.0 AC AND 240.0 AC AND 250.0 DC ALL LOCATIONS250.0 DC ALL LOCATIONS
MOUNTING FACILITY TYPE AND QUANTITY2 UNTHREADED HOLE(S)2 UNTHREADED HOLE(S)
ACTUATOR POSITION DESIGNATIONAT POLE TWOAT POLE TWO
FREQUENCY IN HERTZ60.0 ALL LOCATIONS60.0 ALL LOCATIONS
UNPACKAGED UNIT WEIGHT3.000 POUNDS NOMINAL3.000 POUNDS NOMINAL LBS
CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO WIDTH1.375 INCHES NOMINAL1.375 INCHES NOMINAL IN
FRAGILITY FACTORMODERATELY RUGGEDMODERATELY RUGGED
BODY STYLEMULTIPOLE-MULTIPLE ACTUATOR TYPEMULTIPOLE-MULTIPLE ACTUATOR TYPE
SUBSTITUTES & CROSS-REFERENCES 5
EA2100Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
S4990D03G28Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
EB2100Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
EB2100NReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
31-064Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4990D03G28?
4990D03G28 is a CIRCUIT BREAKER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4990D03G28?
There are 5 known substitutes for 4990D03G28: EA2100, S4990D03G28, EB2100 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4990D03G28?
4990D03G28 is cataloged in the U.S. Government catalog under NSN 5925-00-262-5672. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.