Home · NSN 00-491-8921

NSN 00-491-8921 — Circuit Breaker

NIIN 00-491-8921 · unit of issue EA · AAC J (not stocked, central procurement) · source of supply SMS

NSN 00-491-8921 is the national stock number for a circuit breaker. It cross-references to 4 manufacturer part numbers from 2 CAGE codes, including Eaton Corporation, Westinghouse Electric Corp Control Business Unit; the primary is 4990D03G38. The unit of issue is EA and the FLIS list price is $642.91.

No government purchase of this stock number is on our record yet. No seller has confirmed stock of it here in the last 60 days; watching the number is free and the first listing triggers an alert.

part numbers from 2 CAGEs

open solicitations, all agencies

government buys in 24 months

sellers with confirmed stock

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Cross-references

Part numbers filed against this stock number, with the manufacturer (CAGE) and the FLIS reference codes.

Part number	CAGE	Manufacturer	Reference	Variation
EHD3035	89946	Eaton Corporation	3 · Design control (vendor)	2 · Fully interchangeable
4990D03G38	89946	Eaton Corporation	5 · Secondary reference	9 · Reference only
6638C90G08	89946	Eaton Corporation	5 · Secondary reference	2 · Fully interchangeable
EB3035	89946	Eaton Corporation	5 · Secondary reference	9 · Reference only
EB3035	11660	Westinghouse Electric Corp Control Business Unit	C	1 · Not fully interchangeable

Government demand

Nothing open right now. Watch this NSN and we will email you when it is solicited.

What the government paid

No government purchase on record for this NSN.

Sources: DLA DIBBS procurement history (unit cost), DLA award history, FPDS (all agencies), SAM.gov notices.

Sellers with confirmed stock

No seller has confirmed stock on this NSN in the last 60 days. Watch it and we will email you when one does, or request a quote on 4990D03G38.

Listings appear here only while the seller has confirmed them within 60 days. Sellers: list this part free.

DLA management data

FLIS unit price: $642.91
Unit of issue: EA
Acquisition advice: J — Not stocked, central procurement
Source of supply: SMS
Effective: Oct 1, 2026

Item characteristics

Body Length: INCHES NOMINAL 6.000
Body Width: INCHES NOMINAL 4.125
Body Height: INCHES NOMINAL 3.375
Center To Center Distance Between Terminals Parallel To Length: INCHES NOMINAL 5.062
Center To Center Distance Between Terminals Parallel To Width: INCHES NOMINAL 1.375
Unthreaded Mounting Hole Diameter: INCHES NOMINAL 0.188
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length: INCHES NOMINAL 4.750
Distance Between Centerlines Of Mounting Facilities Parallel To Body Width: INCHES NOMINAL 1.375
Fragility Factor: MODERATELY RUGGED
Boss Height: INCHES NOMINAL 0.125
Pole Quantity: 3
Arc Quenching Method: MAGNETIC BLOWOUT
Mounting Facility Type And Quantity: UNTHREADED HOLE(S) 4
Storage Type: GENERAL PURPOSE WAREHOUSE
Special Handling Feature: MAGNETIC
Maximum Continuous Load Current Rating Per Pole: ALL LOCATIONS AMPERES AC 35.0 AND AMPERES DC 35.0
Operating Voltage Type And Rating Per Pole In Volts: ALL LOCATIONS AC 240.0 AND DC 250.0
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps: ALL LOCATIONS AC 10000.0 AND DC 5000.0
Circuit Protection Type: ALL LOCATIONS OVERCURRENT
Trip Release Method: ALL LOCATIONS THERMAL-MAGNETIC
Trip Release Characteristic: ALL LOCATIONS TIME DELAY
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent: 125.0
Reset Method: MANUAL
Main Contact Tripping Mechanism Type: TRIP FREE

Related stock numbers

Other NSNs filed under the same part numbers.

00-825-8116 · Resistor,Fixed,Composition
00-909-4156 · Resistor,Fixed,Composition
00-935-8542 · Resistor,Fixed,Composition

About this page

An NSN is 13 digits: the 4-digit Federal Supply Class and the 9-digit NIIN. Cross-references come from the federal logistics record; demand from DLA DIBBS, SAM.gov and FPDS; ADs from the Federal Register. Refreshed nightly. Market Pulse shows the whole market.