The Relay-Switch, cataloged under National Stock Number 5999-01-269-9105, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Medical Research Laboratories Inc Dba M R L Div Defibrillation Division. Government technical data includes 5 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-269-9105 |
| Primary Part Number | 500191 |
| Item Name | Relay-Switch |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Medical Research Laboratories Inc Dba M R L Div Defibrillation Division |
| Status | ACTIVE |
| Contact Current Type | DC |
| Current Rating at Maximum Rated Voltage | 10.0 AMPERES RESISTIVE |
| Voltage Rating at Maximum Rated Current | 240.0 VOLTS |
| Relay Type | POWER |
| Maximum Voltage Rating in Volts | 240.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | X |
| Part Number | Manufacturer |
|---|---|
| 500191 PRIMARY | Medical Research Laboratories Inc Dba M R L Div Defibrillation Division (USA) |
NSN 5999-01-269-9105 is a Relay-Switch, manufactured by Medical Research Laboratories Inc Dba M R L Div Defibrillation Division, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-269-9105 has 1 manufacturer part number on file: 500191 (Medical Research Laboratories Inc Dba M R L Div Defibrillation Division).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-350-3916, 5325-01-686-6048. Verify interchangeability with system specifications before substitution.
Key specifications for 500191: Contact Current Type: DC; Current Rating at Maximum Rated Voltage: 10.0 AMPERES RESISTIVE; Voltage Rating at Maximum Rated Current: 240.0 VOLTS; Relay Type: POWER. 5 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.