PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RB45-1589Relay,electromagnetic

Midland-Ross Corp Midtex Div · NSN 5945-00-258-1773 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-258-1773 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-258-1773. Primary manufacturer part number: RB45-1589.
Features
  • Relay,electromagnetic — FSC 5945
  • Coil Quantity: 1
  • Terminal Type and Quantity: 6 PIN ALL FUNCTIONS
  • Operating Voltage Rating and Type at Specified Temp: 28.0 VOLTS DC 25 DEG CELSIUS ALL WINDINGS
  • Winding DC Resistance Rating: 280.0 OHMS NOMINAL ALL WINDINGS
  • Arc Quenching Method: INERT GAS
  • Main Contact Maximum Voltage Rating in Volts: 28.0 AC AND 28.0 DC
  • Duty Type: CONTINUOUS
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-258-1773, 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 Midland-Ross Corp Midtex Div. 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-258-1773
Primary Part NumberRB45-1589
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerMidland-Ross Corp Midtex Div
StatusACTIVE
Coil Quantity1
Terminal Type and Quantity6 PIN ALL FUNCTIONS
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS ALL WINDINGS
Winding DC Resistance Rating280.0 OHMS NOMINAL ALL WINDINGS
Arc Quenching MethodINERT GAS
Main Contact Maximum Voltage Rating in Volts28.0 AC AND 28.0 DC
Duty TypeCONTINUOUS
Mounting Facility Type and Quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC AND 10.0 AMPERES DC RESISTIVE LOAD
Winding Quantity2
Environmental ProtectionHERMETIC
Pile-Up Main Contact Form Arrangement1A1B
Nominal Operating Current Rating and Type100.0 MILLIAMPERES DC ALL WINDINGS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-060-32042C5858 INTERCHANGEABLE
Valve,check
Crissair Inc Div Esco Technologies
6210-00-176-6074389-1 INTERCHANGEABLE
Light,indicator
Itt Schadow Inc
3120-00-203-401612-710 INTERCHANGEABLE
Bearing,sleeve
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
3455-00-240-731312710 INTERCHANGEABLE
Cutter,milling,angle
Niagara Cutter Inc
5342-00-721-5319714203 INTERCHANGEABLE
Coupling,clamp,grooved
Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)
3120-00-975-2133127-10 INTERCHANGEABLE
Bearing,sleeve
Northfield Precision Instrument Corp Dba Northfield Precision Instrument Corp
5330-01-287-755512710 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
2590-01-365-396312710 INTERCHANGEABLE
Tank,oil,hydraulic System
DP Manufacturing Inc.
3020-01-563-973612710 INTERCHANGEABLE
Gear,spur
Carlisle & Finch Co
4940-01-594-391712710 INTERCHANGEABLE
Parts Kit,blast Cleaning Machine
Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
Cross-Reference Index
Part NumberManufacturer
RB45-1589 Midland-Ross Corp Midtex Div
12710 L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division (USA)
A410-156311-00 Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co (USA)
Related Parts
4820-00-060-3204INTERCHANGEABLE
VALVE,CHECK
2C5858
6210-00-176-6074INTERCHANGEABLE
LIGHT,INDICATOR
389-1
3120-00-203-4016INTERCHANGEABLE
BEARING,SLEEVE
12-710
3455-00-240-7313INTERCHANGEABLE
CUTTER,MILLING,ANGLE
12710
5342-00-721-5319INTERCHANGEABLE
COUPLING,CLAMP,GROOVED
714203
3120-00-975-2133INTERCHANGEABLE
BEARING,SLEEVE
127-10
5330-01-287-7555INTERCHANGEABLE
SEAL,PLAIN ENCASED
12710
2590-01-365-3963INTERCHANGEABLE
TANK,OIL,HYDRAULIC SYSTEM
12710
3020-01-563-9736INTERCHANGEABLE
GEAR,SPUR
12710
4940-01-594-3917INTERCHANGEABLE
PARTS KIT,BLAST CLEANING MACHINE
12710
1680-01-669-3649INTERCHANGEABLE
ARM,WINDSHIELD WIPER
12710
5310-01-728-1107INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
12-710

Frequently Asked Questions

What is NSN 5945-00-258-1773?

NSN 5945-00-258-1773 is a Relay,electromagnetic, manufactured by Midland-Ross Corp Midtex Div, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-258-1773?

NSN 5945-00-258-1773 has 3 cross-referenced part numbers: RB45-1589 (Midland-Ross Corp Midtex Div), 12710 (L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division), A410-156311-00 (Guardian Electric Manufacturing Co Div Guardian Electric Mfg Co).

What NSN replaces 5945-00-258-1773?

There are 12 known substitutes for 5945-00-258-1773: 4820-00-060-3204, 6210-00-176-6074, 3120-00-203-4016 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RB45-1589?

Key specifications for RB45-1589: Coil Quantity: 1; Terminal Type and Quantity: 6 PIN ALL FUNCTIONS; Operating Voltage Rating and Type at Specified Temp: 28.0 VOLTS DC 25 DEG CELSIUS ALL WINDINGS; Winding DC Resistance Rating: 280.0 OHMS NOMINAL ALL WINDINGS. 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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