The Relay,electromagnetic, cataloged under National Stock Number 5945-00-146-5021, 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 Sigma Instruments Inc. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-146-5021 |
| Primary Part Number | 70R4S2500 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — No Item Name Available |
| Manufacturer | Sigma Instruments Inc |
| Status | ACTIVE |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Environmental Protection | DUSTPROOF |
| Time Delay | 0.015 SECONDS MAXIMUM FIXED OPERATE TIME |
| Winding DC Resistance Rating | 2.5 KILOHMS NOMINAL SINGLE WINDING |
| Precious Material | GOLD AND SILVER |
| Winding Quantity | 1 |
| Precious Material and Location | CONTACT SILVER AND CONTACT SURFACE GOLD |
| Coil Quantity | 1 |
| Main Contact Maximum Voltage Rating in Volts | 120.0 AC AND 28.0 DC |
| Nonpile-Up Main Contact Arrangement | 4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Time Delay | 0.008 SECONDS MAXIMUM FIXED RELEASE TIME |
| Nominal Thread Size | 0.099 INCHES SINGLE MOUNTING FACILITY IN |
| Duty Type | CONTINUOUS |
| Thread Quantity Per Inch | 48 SINGLE MOUNTING FACILITY |
| Terminal Type and Quantity | 14 TAB, SOLDER LUG ALL FUNCTIONS |
| Main Contact Load Current Rating at Maximum Rated Voltage | 2.0 AMPERES AC AND 2.0 AMPERES DC RESISTIVE LOAD |
| Surface Treatment | GOLD CONTACT |
| Nominal Operating Current Rating and Type | 8.4 MILLIAMPERES DC SINGLE WINDING |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY |
| Mounting Facility Type and Quantity | 1 THREADED STUD(S) SINGLE MOUNTING FACILITY |
| Material | SILVER CONTACT |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5945-00-146-5021 is a Relay,electromagnetic, manufactured by Sigma Instruments Inc, classified under FSC 5945 (No Item Name Available). Status: active.
NSN 5945-00-146-5021 has 5 cross-referenced part numbers: 70R4S2500 (Sigma Instruments Inc), 1734-1725 (Victor Technologies Inc), 62R4S2500 (Sigma Instruments Inc), 4-1725 (Victor Technologies Inc), 50156-1 (Victor Technologies Inc).
There are 6 known substitutes for 5945-00-146-5021: 5310-00-011-5547, 5910-00-115-8205, 5905-00-629-0065 and 3 more. Verify interchangeability with system specifications before substitution.
Key specifications for 70R4S2500: Thread Class: 2A SINGLE MOUNTING FACILITY A; Overall Height: 1.398 INCHES MAXIMUM IN; Environmental Protection: DUSTPROOF; Overall Length: 1.172 INCHES MAXIMUM IN. 24 total characteristics are documented in the Federal Logistics Information System.