PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4B-1E-126Relay,electromagnetic

Hi-G S.r.l. · NSN 5945-00-981-7258 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-981-7258 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-981-7258. Primary manufacturer part number: 4B-1E-126.
Features
  • Relay,electromagnetic — FSC 5945
  • Winding Quantity: 1
  • Environmental Protection: HERMETIC
  • Main Contact Maximum Voltage Rating in Volts: 32.0 DC
  • Duty Type: CONTINUOUS
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.400 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Operating Voltage Rating and Type at Specified Temp: 26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Winding DC Resistance Rating: 70.0 OHMS NOMINAL SINGLE WINDING
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-981-7258, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Hi-G S.r.l.. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-981-7258
Primary Part Number4B-1E-126
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerHi-G S.r.l.
StatusCANCELLED
Winding Quantity1
Environmental ProtectionHERMETIC
Main Contact Maximum Voltage Rating in Volts32.0 DC
Duty TypeCONTINUOUS
Center to Center Distance Between Mounting Facilities Parallel to Width0.400 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Operating Voltage Rating and Type at Specified Temp26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Winding DC Resistance Rating70.0 OHMS NOMINAL SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Length1.078 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Coil Quantity1
Terminal Type and Quantity14 PIN ALL FUNCTIONS
Unthreaded Mounting Hole Diameter0.096 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Load Current Rating at Maximum Rated Voltage2.0 AMPERES DC RESISTIVE LOAD
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Nonpile-Up Main Contact Arrangement4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
2825-00-379-3574400-056 INTERCHANGEABLE
Wheel,turbine,blade
Siemens Energy, Inc.
3110-00-516-5489400056 INTERCHANGEABLE
Ring,bearing,outer
Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems
5995-00-830-4715 INTERCHANGEABLE
Cable Assembly
5962-01-086-7029 INTERCHANGEABLE
Microcircuit,digital
2895-01-169-7341AD691 INTERCHANGEABLE
Vane,motor,air
Gast Mfg Corp
5315-01-180-226418-A ITEM39 INTERCHANGEABLE
Pin
Rotex Punch Company, Inc Dba Uni-Wrap
Cross-Reference Index
Part NumberManufacturer
4B-1E-126 Hi-G S.r.l. (ITA)
N186952-3 Safran Electrical & Power Uk Limited (GBR)
35964-001 Rockwell Collins Deutschland Gmbh Div Rockwell Collins International & Service Solutions (DEU)
6421048 Embraer Aviation International (FRA)
6421048 Embraer Empresa Brasileira De Aeronautica Sa (BRA)
4B1E126 Hi-G Co Inc Sub of Nytronics Inc (USA)
4B1923 Hi-G Co Inc Sub of Nytronics Inc (USA)
6421048 Embraer S.a. (BRA)
400-056 Computer Components, Inc Dba Relays Unlimited (USA)
Related Parts
2825-00-379-3574INTERCHANGEABLE
WHEEL,TURBINE,BLADE
400-056
3110-00-516-5489INTERCHANGEABLE
RING,BEARING,OUTER
400056
5995-00-830-4715INTERCHANGEABLE
CABLE ASSEMBLY
5962-01-086-7029INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
2895-01-169-7341INTERCHANGEABLE
VANE,MOTOR,AIR
AD691
5315-01-180-2264INTERCHANGEABLE
PIN
18-A ITEM39

Frequently Asked Questions

What is NSN 5945-00-981-7258?

NSN 5945-00-981-7258 is a Relay,electromagnetic, manufactured by Hi-G S.r.l., classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-981-7258?

NSN 5945-00-981-7258 has 9 cross-referenced part numbers: 4B-1E-126 (Hi-G S.r.l.), N186952-3 (Safran Electrical & Power Uk Limited), 35964-001 (Rockwell Collins Deutschland Gmbh Div Rockwell Collins International & Service Solutions), 6421048 (Embraer Aviation International), 6421048 (Embraer Empresa Brasileira De Aeronautica Sa) and 4 more.

What NSN replaces 5945-00-981-7258?

There are 6 known substitutes for 5945-00-981-7258: 2825-00-379-3574, 3110-00-516-5489, 5995-00-830-4715 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4B-1E-126?

Key specifications for 4B-1E-126: Winding Quantity: 1; Environmental Protection: HERMETIC; Overall Width: 0.800 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 32.0 DC. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-981-7258 still in active supply?

NSN 5945-00-981-7258 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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