Home · NSN 01-040-8957

NSN 01-040-8957 — Circuit Breaker

NIIN 01-040-8957 · unit of issue EA · AAC Z (insurance item) · source of supply SMS

NSN 01-040-8957 is the national stock number for a circuit breaker. It cross-references to 6 manufacturer part numbers from 3 CAGE codes, including Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M, Sensata Technologies Maryland, Inc, Eaton Corp Heinemann Products Commercial Controls Div; the primary is AP112. The unit of issue is EA and the FLIS list price is $335.07.

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 3 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
M39019/05-243	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	2 · Item ident. reference	2 · Fully interchangeable
MIL-PRF-39019/5	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	4	1 · Not fully interchangeable
M39019-5-110	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
MIL-C-39019/5	81349	Military Specifications Promulgated By Military Departments/Agencies Under Authority Of Defense Standardization Manual 4120 3-M	5 · Secondary reference	9 · Reference only
AP112	81541	Sensata Technologies Maryland, Inc	C	1 · Not fully interchangeable
HB3Z1-110	74193	Eaton Corp Heinemann Products Commercial Controls Div	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 AP112.

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

DLA management data

FLIS unit price: $335.07
Unit of issue: EA
Acquisition advice: Z — Insurance item
Source of supply: SMS
Effective: Oct 1, 2025

Item characteristics

Thread Pitch Diameters: INCHES 0.3503 TO 0.3537
Bushing Length: INCHES MINIMUM 0.332 AND INCHES MAXIMUM 0.380
Body Length: INCHES MINIMUM 1.531 AND INCHES MAXIMUM 1.562
Body Width: INCHES MINIMUM 1.906 AND INCHES MAXIMUM 1.937
Center To Center Distance Between Terminals Parallel To Length: INCHES MINIMUM 0.875 AND INCHES MAXIMUM 0.906
Center To Center Distance Between Terminals Parallel To Width: INCHES MINIMUM 0.594 AND INCHES MAXIMUM 0.656
Fragility Factor: MODERATELY RUGGED
Mounting Surface To Terminal End Distance: INCHES MINIMUM 1.797 AND INCHES MAXIMUM 1.828
Pole Quantity: 3
Mounting Facility Type And Quantity: THREADED BUSHING WITH PANEL SEAL 1
Storage Type: GENERAL PURPOSE WAREHOUSE
Thread Quantity Per Inch: 32
Maximum Continuous Load Current Rating Per Pole: ALL LOCATIONS AMPERES AC 8.0 AND AMPERES DC 8.0
Operating Voltage Type And Rating Per Pole In Volts: ALL LOCATIONS AC 240.0 AND DC 50.0
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps: ALL LOCATIONS AC 300.0 AND DC 500.0
Circuit Protection Type: ALL LOCATIONS OVERCURRENT
Trip Release Method: ALL LOCATIONS MAGNETIC
Trip Release Characteristic: ALL LOCATIONS TIME DELAY
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent: 115.0
Reset Method: MANUAL
Main Contact Tripping Mechanism Type: TRIP FREE
Manual Actuator Type And Quantity: TOGGLE 1
Actuator Function: TRIP-RESET
Actuator Position Designation: AT POLE TWO

Related stock numbers

Other NSNs filed under the same part numbers.

00-103-5096 · Circuit Breaker
00-103-5097 · Circuit Breaker
00-421-2802 · Circuit Breaker
00-529-0492 · Belt,V
00-724-0520 · Filter Element,Fluid
00-762-2258 · Circuit Breaker
00-871-6476 · Circuit Breaker
01-019-5138 · Circuit Breaker

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.