The Switch,thermostatic, cataloged under National Stock Number 5930-01-252-3920, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-252-3920 |
| Primary Part Number | AR0-2524EP |
| Item Name | Switch,thermostatic |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Contact Action Stimulus | INCREASE |
| Terminal Type | TAB W/SCREW |
| Mounting Facility Pattern | TWO POSITION DIAGONAL |
| Bulb Length | 5.000 INCHES NOMINAL IN |
| Bulb Diameter | 0.250 INCHES NOMINAL IN |
| Mounting Method | BRACKET(S) AND UNTHREADED HOLE(S) |
| Unthreaded Mounting Hole Diameter | 0.312 INCHES NOMINAL IN |
| Longest Vertical Distance Between Mounting Centers | 7.375 INCHES NOMINAL IN |
| Temp Sensing Element Type | CAPILLARY TUBE-BULB |
| Features Provided | CAPILLARY TUBE END SEAL CONNECTION AND INTEGRAL KNOB |
| Capillary Tube Length | 84.0 INCHES NOMINAL IN |
| Body Length | 2.281 INCHES NOMINAL IN |
| Nonpile-Up Contact Arrangement | 2 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED |
| Longest Horizontal Distance Between Mounting Centers | 3.000 INCHES NOMINAL IN |
| Hazardous Locations/environmental Protection | EXPLOSION RESISTANT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AR0-2524EP PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
NSN 5930-01-252-3920 is a Switch,thermostatic, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-252-3920 has 1 manufacturer part number on file: AR0-2524EP (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
Key specifications for AR0-2524EP: Overall Height: 4.094 INCHES NOMINAL IN; Contact Action Stimulus: INCREASE; Terminal Type: TAB W/SCREW; Mounting Facility Pattern: TWO POSITION DIAGONAL. 15 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.