NSN 5925-01-256-8511 — this item is cataloged by the U.S. Government under National Stock Number 5925-01-256-8511. Manufacturer of record part number: 4294016-3.
Operating Voltage Type and Rating Per Pole in Volts: 500.0 AC ALL LOCATIONS
Frequency in Hertz: 60.0 ALL LOCATIONS
Circuit Protection Type: UNDERVOLTAGE ALL LOCATIONS
Pole Quantity: 33
2 manufacturer part numbers on file
Manufacturer of record: Whipp & Bourne Inc.
Identification
NSN: 5925-01-256-8511
NIIN: 012568511
FSC: 5925 — Circuit Breakers
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: 4294016-3
Manufacturer: Whipp & Bourne Inc.
General Description
The Circuit Breaker, cataloged under National Stock Number 5925-01-256-8511, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Whipp & Bourne Inc.. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5925-01-256-8511
Primary Part Number
4294016-3
Item Name
Circuit Breaker
FSC / FSG
5925 / 59 — Circuit Breakers
Manufacturer
Whipp & Bourne Inc.
Status
ACTIVE
Operating Voltage Type and Rating Per Pole in Volts
500.0 AC ALL LOCATIONS
Frequency in Hertz
60.0 ALL LOCATIONS
Circuit Protection Type
UNDERVOLTAGE ALL LOCATIONS
Pole Quantity
33
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5925-01-309-73544294014-7POSSIBLE MATCH
CIRCUIT BREAKER
Possible match (shared part number)Whipp & Bourne Inc.
5925-01-320-27674294022-4POSSIBLE MATCH
CIRCUIT BREAKER
Possible match (shared part number)Whipp & Bourne Inc.
5925-01-322-11464294023-2POSSIBLE MATCH
CIRCUIT BREAKER
Possible match (shared part number)Whipp & Bourne Inc.
5925-01-324-52594294021-6POSSIBLE MATCH
CIRCUIT BREAKER
Possible match (shared part number)Whipp & Bourne Inc.
5925-01-324-52604294019-8POSSIBLE MATCH
CIRCUIT BREAKER
Possible match (shared part number)Whipp & Bourne Inc.
5925-01-336-68794294026-7POSSIBLE MATCH
CIRCUIT BREAKER
Possible match (shared part number)Whipp & Bourne Inc.
5925-01-336-68814294028-3POSSIBLE MATCH
CIRCUIT BREAKER
Possible match (shared part number)Whipp & Bourne Inc.
5925-01-336-68824294029-1POSSIBLE MATCH
CIRCUIT BREAKER
Possible match (shared part number)Whipp & Bourne Inc.
NSN 5925-01-256-8511 is a Circuit Breaker, manufactured by Whipp & Bourne Inc., classified under FSC 5925, Circuit Breakers. Status: active.
What part numbers are listed for NSN 5925-01-256-8511?
NSN 5925-01-256-8511 has 2 manufacturer part numbers on file: 4294016-3 (Fki Engineering Ltd T/a Whipp & Bourne), 4294016-3 (Whipp & Bourne Inc.).
What NSN replaces 5925-01-256-8511?
8 possible matches (shared part number, not a government interchangeability claim): 5925-01-309-7354, 5925-01-320-2767, 5925-01-322-1146. Verify interchangeability with system specifications before substitution.
What are the specifications of 4294016-3?
Key specifications for 4294016-3: Operating Voltage Type and Rating Per Pole in Volts: 500.0 AC ALL LOCATIONS; Frequency in Hertz: 60.0 ALL LOCATIONS; Circuit Protection Type: UNDERVOLTAGE ALL LOCATIONS; Pole Quantity: 33. 4 specifications are documented in the U.S. Government catalog.
Is NSN 5925-01-256-8511 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.