PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1-2-70AElectronic Isolator

Roi Development Corp. Dba Newmar · NSN 5999-01-378-4404 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-378-4404 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-378-4404. Primary manufacturer part number: 1-2-70A.
Features
  • Electronic Isolator — FSC 5999
  • General Characteristics Item Description: HEAVY DUTY ISOLATORS ALLOW YOU TO CHANGE MULTIPLE BATTERIES AUTOMATICALLY FROM ONE OR TWO ALTERNATORS, AND PREVENT DISCHARGE OF ONE BATTERY INTO ANOTHER, EACH BATTERY IS CHARGE ACCORDING TO ITS NEED WITHOUT OVERCHARGING, 1 ALTERNATOR, 2 BATTERIES, 70 AMPS
  • General Characteristics Item Description: HEAVY DUTY ISOLATORS ALLOW YOU TO CHANGE MULTIPLE BATTERIES AUTOMATICALLY FROM ONE OR TWO ALTERNATORS, AND PREVENT DISCHARGE OF ONE BATTERY INTO ANOTHER, EACH BATTERY IS CHARGE ACCORDING TO ITS NEED WITHOUT OVERCHARGING, 1 ALTERNATOR, 2 BATTERIES, 70 AMPS
  • 2 verified cross-references
  • Primary manufacturer: Roi Development Corp. Dba Newmar
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Electronic Isolator, cataloged under National Stock Number 5999-01-378-4404, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Roi Development Corp. Dba Newmar. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-378-4404
Primary Part Number1-2-70A
Item NameElectronic Isolator
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerRoi Development Corp. Dba Newmar
StatusACTIVE
General Characteristics Item DescriptionHEAVY DUTY ISOLATORS ALLOW YOU TO CHANGE MULTIPLE BATTERIES AUTOMATICALLY FROM ONE OR TWO ALTERNATORS, AND PREVENT DISCHARGE OF ONE BATTERY INTO ANOTHER, EACH BATTERY IS CHARGE ACCORDING TO ITS NEED WITHOUT OVERCHARGING, 1 ALTERNATOR, 2 BATTERIES, 70 AMPS
General Characteristics Item DescriptionHEAVY DUTY ISOLATORS ALLOW YOU TO CHANGE MULTIPLE BATTERIES AUTOMATICALLY FROM ONE OR TWO ALTERNATORS, AND PREVENT DISCHARGE OF ONE BATTERY INTO ANOTHER, EACH BATTERY IS CHARGE ACCORDING TO ITS NEED WITHOUT OVERCHARGING, 1 ALTERNATOR, 2 BATTERIES, 70 AMPS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight1.4800 lbs
Cube0.2083 cu ft
Verified Substitutes 2
5905-00-279-1890 INTERCHANGEABLE
Resistor,fixed,composition
4710-01-229-6065 INTERCHANGEABLE
Tube,metallic
Cross-Reference Index
Part NumberManufacturer
495-1270-0 Roi Development Corp. Dba Newmar (USA)
1-2-70A PRIMARY Roi Development Corp. Dba Newmar (USA)
Related Parts
5905-00-279-1890INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
4710-01-229-6065INTERCHANGEABLE
TUBE,METALLIC

Frequently Asked Questions

What is NSN 5999-01-378-4404?

NSN 5999-01-378-4404 is a Electronic Isolator, manufactured by Roi Development Corp. Dba Newmar, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-378-4404?

NSN 5999-01-378-4404 has 2 cross-referenced part numbers: 495-1270-0 (Roi Development Corp. Dba Newmar), 1-2-70A (Roi Development Corp. Dba Newmar).

What NSN replaces 5999-01-378-4404?

There are 2 known substitutes for 5999-01-378-4404: 5905-00-279-1890, 4710-01-229-6065. Verify interchangeability with system specifications before substitution.

What are the specifications of 1-2-70A?

Key specifications for 1-2-70A: General Characteristics Item Description: HEAVY DUTY ISOLATORS ALLOW YOU TO CHANGE MULTIPLE BATTERIES AUTOMATICALLY FROM ONE OR TWO ALTERNATORS, AND PREVENT DISCHARGE OF ONE BATTERY INTO ANOTHER, EACH BATTERY IS CHARGE ACCORDING TO ITS NEED WITHOUT OVERCHARGING, 1 ALTERNATOR, 2 BATTERIES, 70 AMPS; General Characteristics Item Description: HEAVY DUTY ISOLATORS ALLOW YOU TO CHANGE MULTIPLE BATTERIES AUTOMATICALLY FROM ONE OR TWO ALTERNATORS, AND PREVENT DISCHARGE OF ONE BATTERY INTO ANOTHER, EACH BATTERY IS CHARGE ACCORDING TO ITS NEED WITHOUT OVERCHARGING, 1 ALTERNATOR, 2 BATTERIES, 70 AMPS. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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