PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4400B1550Relay,electromagnetic

Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems · NSN 5945-00-860-0852 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-860-0852 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-860-0852. Primary manufacturer part number: 4400B1550.
Features
  • Relay,electromagnetic — FSC 5945
  • Nonpile-Up Main Contact Arrangement: 4 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
  • Terminal Type and Quantity: 10 PIN ALL FUNCTIONS
  • Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle: 4.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Duty Type: CONTINUOUS
  • Mounting Facility Pattern: TRIANGLE SINGLE MOUNTING FACILITY
  • Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Main Contact Maximum Voltage Rating in Volts: 400.0 AC
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-860-0852, 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 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-860-0852
Primary Part Number4400B1550
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
StatusACTIVE
Nonpile-Up Main Contact Arrangement4 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Terminal Type and Quantity10 PIN ALL FUNCTIONS
Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle4.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Duty TypeCONTINUOUS
Mounting Facility PatternTRIANGLE SINGLE MOUNTING FACILITY
Mounting Facility Type and Quantity3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts400.0 AC
Main Contact Load Current Rating at Maximum Rated Voltage50.0 AMPERES AC RESISTIVE LOAD
Frequency in Hertz60.0 NOMINAL
Coil Quantity1
Winding Quantity1
Operating Voltage Rating and Type at Specified Temp115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Unthreaded Mounting Hole Diameter0.190 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2540-00-101-469826-3316 INTERCHANGEABLE
Pedal,control
Anchor Industries Inc
4940-00-254-8762 INTERCHANGEABLE
Press,solid Tire
2910-00-311-4631223 INTERCHANGEABLE
Filter Element,fluid
Deluxe Products Div Walker Mfg Co
2815-01-322-12325149428 INTERCHANGEABLE
Engine Block,diesel
Rolls-Royce Solutions America Inc
5310-01-593-089212759-01275 INTERCHANGEABLE
Washer,seal
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
33165 Cooper Industries Inc Cooper Distribution Equipment Div (USA)
4400B1550 Lockheed Corp Lockheed Electronics Co Inc (USA)
4400B1550 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
Related Parts
2540-00-101-4698INTERCHANGEABLE
PEDAL,CONTROL
26-3316
4940-00-254-8762INTERCHANGEABLE
PRESS,SOLID TIRE
2910-00-311-4631INTERCHANGEABLE
FILTER ELEMENT,FLUID
223
2815-01-322-1232INTERCHANGEABLE
ENGINE BLOCK,DIESEL
5149428
5310-01-593-0892INTERCHANGEABLE
WASHER,SEAL
12759-01275

Frequently Asked Questions

What is NSN 5945-00-860-0852?

NSN 5945-00-860-0852 is a Relay,electromagnetic, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-860-0852?

NSN 5945-00-860-0852 has 3 cross-referenced part numbers: 33165 (Cooper Industries Inc Cooper Distribution Equipment Div), 4400B1550 (Lockheed Corp Lockheed Electronics Co Inc), 4400B1550 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems).

What NSN replaces 5945-00-860-0852?

There are 5 known substitutes for 5945-00-860-0852: 2540-00-101-4698, 4940-00-254-8762, 2910-00-311-4631 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4400B1550?

Key specifications for 4400B1550: Overall Height: 4.500 INCHES NOMINAL IN; Nonpile-Up Main Contact Arrangement: 4 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION; Terminal Type and Quantity: 10 PIN ALL FUNCTIONS; Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle: 4.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 16 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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