Relay, Fan Interlock4140-01-142-1225

NSN 4140-01-142-1225 · NIIN 011421225 · Part number DA0900

Wellman Thermal Systems Corp · FSC 4140 — Fans, Air Circulators, and Blower Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment · CAGE 58823

Government record, cited

NSN 4140-01-142-1225 — this item is cataloged by the U.S. Government under National Stock Number 4140-01-142-1225. Manufacturer of record part number: DA0900.

Also searched as 4140-01-142-1225 · 4140011421225 · NIIN 011421225 · 01-142-1225 · FSC 4140 Fans, Air Circulators, and Blower Equipment · CAGE 58823 · DA0900

Nearby stock numbers ← 4140-01-142-1214 Fan · 4140-01-142-2250 →

Features

Relay,fan Interlock — FSC 4140
1 manufacturer part number on file
Manufacturer of record: Wellman Thermal Systems Corp

Identification

NSN: 4140-01-142-1225
NIIN: 011421225
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
Primary part number: DA0900
Manufacturer: Wellman Thermal Systems Corp

General Description

The Relay,fan Interlock, cataloged under National Stock Number 4140-01-142-1225, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Wellman Thermal Systems Corp. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts

Item Name	Relay,fan Interlock
FSC / FSG	4140 — Fans, Air Circulators, and Blower Equipment (FSG 41)
Manufacturers	Wellman Thermal Systems Corp (CAGE 58823)

Technical Specifications

Parameter	Value
NSN	4140-01-142-1225
Primary Part Number	DA0900
Item Name	Relay,fan Interlock
FSC / FSG	4140 / 41 — Fans, Air Circulators, and Blower Equipment
Manufacturer	Wellman Thermal Systems Corp
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

1005-01-624-9887DA0900 POSSIBLE MATCH

ROTOR,GUN,AUTOMATIC

Possible match (shared part number)Dillon Aero, Inc.

Cross-Reference Index

Part Number	Manufacturer
DA0900 PRIMARY	Wellman Thermal Systems Corp (USA)

Related Parts

1005-01-624-9887POSSIBLE MATCH

ROTOR,GUN,AUTOMATIC

DA0900

Frequently Asked Questions

What is NSN 4140-01-142-1225?

NSN 4140-01-142-1225 is a Relay,fan Interlock, manufactured by Wellman Thermal Systems Corp, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.

What part numbers are listed for NSN 4140-01-142-1225?

NSN 4140-01-142-1225 has 1 manufacturer part number on file: DA0900 (Wellman Thermal Systems Corp).

What NSN replaces 4140-01-142-1225?

1 possible match (shared part number, not a government interchangeability claim): 1005-01-624-9887. Verify interchangeability with system specifications before substitution.

Is NSN 4140-01-142-1225 hazardous material?

No hazard code in the DLA record (HMIC N). 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.

PartsTable Design LLC · partstable.com