PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2728BRelay,electromagnetic

Avo Multi-Amp Corp · NSN 5945-01-089-2120 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-089-2120 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-089-2120. Primary manufacturer part number: 2728B.
Features
  • Relay,electromagnetic — FSC 5945
  • Main Contact Maximum Voltage Rating in Volts: 115.0 AC
  • Winding Quantity: 1
  • Pile-Up Main Contact Form Arrangement: 5A AND 1B A
  • Nominal Operating Current Rating and Type: 6.0 AMPERES AC SINGLE WINDING
  • Material: SILVER CONTACT
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Precious Material and Location: CONTACTS SILVER AND CONTACT SURFACES GOLD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
  • Applications requiring Silver Contact construction
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-089-2120, 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 Avo Multi-Amp Corp. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-01-089-2120
Primary Part Number2728B
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerAvo Multi-Amp Corp
StatusACTIVE
Main Contact Maximum Voltage Rating in Volts115.0 AC
Winding Quantity1
Pile-Up Main Contact Form Arrangement5A AND 1B A
Nominal Operating Current Rating and Type6.0 AMPERES AC SINGLE WINDING
MaterialSILVER CONTACT
Center to Center Distance Between Mounting Facilities Parallel to Length0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Precious Material and LocationCONTACTS SILVER AND CONTACT SURFACES GOLD
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Winding DC Resistance Rating0.04 OHMS NOMINAL SINGLE WINDING
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Width0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC RESISTIVE LOAD
Coil Quantity1
Precious MaterialSILVER AND GOLD
Surface TreatmentGOLD CONTACT
Terminal Type and Quantity14 TAB, SOLDER LUG ALL FUNCTIONS
Duty TypeCONTINUOUS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4920-00-138-70922728 INTERCHANGEABLE
Test Set,engine Tri
Mission Systems Davenport Inc.
5331-00-231-3261574-2200-812408REVAPC13 INTERCHANGEABLE
O-Ring
Naval Ship Systems Command
5330-00-369-317628-P-220 INTERCHANGEABLE
Seal,plain Encased
Parker Hannifin Corporation Div Chelsea Products Division
5950-00-647-6782710876 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5935-00-729-36609113265 INTERCHANGEABLE
Adapter,connector
Us Army Aviation and Missile Command
5815-00-859-6560 INTERCHANGEABLE
Arm Assembly
5315-01-390-5802 INTERCHANGEABLE
Pin,quick Release
7690-01-708-27782004613 INTERCHANGEABLE
Decal
Aero Specialties Inc Div Sales
Cross-Reference Index
Part NumberManufacturer
MA2728B-2EACH WITH DWG 16378-A Avo Multi-Amp Corp (USA)
200-4613 Deltrol Corp Deltrol Controls Div (USA)
MA2728B Avo Multi-Amp Corp (USA)
2728 Avo Multi-Amp Corp (USA)
MA2728 Avo Multi-Amp Corp (USA)
2728B PRIMARY Avo Multi-Amp Corp (USA)
200-4613SPECIAL Deltrol Corp Deltrol Controls Div (USA)
Related Parts
4920-00-138-7092INTERCHANGEABLE
TEST SET,ENGINE TRI
2728
5331-00-231-3261INTERCHANGEABLE
O-RING
574-2200-812408REVAPC13
5330-00-369-3176INTERCHANGEABLE
SEAL,PLAIN ENCASED
28-P-220
5950-00-647-6782INTERCHANGEABLE
TRANSFORMER,POWER
710876
5935-00-729-3660INTERCHANGEABLE
ADAPTER,CONNECTOR
9113265
5815-00-859-6560INTERCHANGEABLE
ARM ASSEMBLY
5315-01-390-5802INTERCHANGEABLE
PIN,QUICK RELEASE
7690-01-708-2778INTERCHANGEABLE
DECAL
2004613

Frequently Asked Questions

What is NSN 5945-01-089-2120?

NSN 5945-01-089-2120 is a Relay,electromagnetic, manufactured by Avo Multi-Amp Corp, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-089-2120?

NSN 5945-01-089-2120 has 7 cross-referenced part numbers: MA2728B-2EACH WITH DWG 16378-A (Avo Multi-Amp Corp), 200-4613 (Deltrol Corp Deltrol Controls Div), MA2728B (Avo Multi-Amp Corp), 2728 (Avo Multi-Amp Corp), MA2728 (Avo Multi-Amp Corp) and 2 more.

What NSN replaces 5945-01-089-2120?

There are 8 known substitutes for 5945-01-089-2120: 4920-00-138-7092, 5331-00-231-3261, 5330-00-369-3176 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2728B?

Key specifications for 2728B: Main Contact Maximum Voltage Rating in Volts: 115.0 AC; Winding Quantity: 1; Pile-Up Main Contact Form Arrangement: 5A AND 1B A; Nominal Operating Current Rating and Type: 6.0 AMPERES AC SINGLE WINDING. 20 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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