PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TSA141300Timer,interval

Littelfuse, Inc. · NSN 6645-01-551-5321 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-551-5321 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-551-5321. Primary manufacturer part number: TSA141300.
Features
  • Timer,interval — FSC 6645
  • Voltage in Volts: 120.0
  • Current Type: AC
  • Timer Type: ELECTRICAL
  • Furnished Items: INTERVAL EXPIRATION SIGNALLING DEVICE
  • Control Type: ELECTRIC
  • 4 verified cross-references
  • Primary manufacturer: Littelfuse, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Timer,interval, cataloged under National Stock Number 6645-01-551-5321, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Littelfuse, Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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
NSN6645-01-551-5321
Primary Part NumberTSA141300
Item NameTimer,interval
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerLittelfuse, Inc.
StatusACTIVE
Voltage in Volts120.0
Current TypeAC
Timer TypeELECTRICAL
Furnished ItemsINTERVAL EXPIRATION SIGNALLING DEVICE
Control TypeELECTRIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6810-00-138-2484 INTERCHANGEABLE
Hydrochloric Acid
4820-00-142-313712111 1 1/2 INTERCHANGEABLE
Valve,gate
Flowserve Inc
4810-00-200-25868211 INTERCHANGEABLE
Valve,solenoid
Automatic Switch Company Dba Asco
5950-00-228-452147648 INTERCHANGEABLE
Transformer,radio Frequency
Naval Ship Systems Command
2530-00-628-10238211 INTERCHANGEABLE
Lever,camshaft
Pdi Ground Support Systems, Inc.
5930-00-755-4009 INTERCHANGEABLE
Switch,toggle
6680-01-047-592408204-20 INTERCHANGEABLE
Tachometer,electrical,self-Gener
Cole-Parmer Instrument Company, Llc
5920-01-134-9624 INTERCHANGEABLE
Mat,electrostatic Discharging
5342-01-234-24108211 INTERCHANGEABLE
Clamp
Grimes Aerospace Company
6625-01-258-5212467-0058 INTERCHANGEABLE
Shunt,instrument
Continental Electronics Corp
Cross-Reference Index
Part NumberManufacturer
8148 ITEM 6 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
8211 Howell Laboratories Inc Dba Howell Laboratories Inc (USA)
TSA141300 PRIMARY Littelfuse, Inc. (USA)
TS141300 Ssac Inc (USA)
Related Parts
6810-00-138-2484INTERCHANGEABLE
HYDROCHLORIC ACID
4820-00-142-3137INTERCHANGEABLE
VALVE,GATE
12111 1 1/2
4810-00-200-2586INTERCHANGEABLE
VALVE,SOLENOID
8211
5950-00-228-4521INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
47648
2530-00-628-1023INTERCHANGEABLE
LEVER,CAMSHAFT
8211
5930-00-755-4009INTERCHANGEABLE
SWITCH,TOGGLE
6680-01-047-5924INTERCHANGEABLE
TACHOMETER,ELECTRICAL,SELF-GENER
08204-20
5920-01-134-9624INTERCHANGEABLE
MAT,ELECTROSTATIC DISCHARGING
5342-01-234-2410INTERCHANGEABLE
CLAMP
8211
6625-01-258-5212INTERCHANGEABLE
SHUNT,INSTRUMENT
467-0058
6625-01-530-8553INTERCHANGEABLE
METER,MODULATION
8211
6150-01-576-8899INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
13014799

Frequently Asked Questions

What is NSN 6645-01-551-5321?

NSN 6645-01-551-5321 is a Timer,interval, manufactured by Littelfuse, Inc., classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-01-551-5321?

NSN 6645-01-551-5321 has 4 cross-referenced part numbers: 8148 ITEM 6 (Howell Laboratories Inc Dba Howell Laboratories Inc), 8211 (Howell Laboratories Inc Dba Howell Laboratories Inc), TSA141300 (Littelfuse, Inc.), TS141300 (Ssac Inc).

What NSN replaces 6645-01-551-5321?

There are 12 known substitutes for 6645-01-551-5321: 6810-00-138-2484, 4820-00-142-3137, 4810-00-200-2586 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TSA141300?

Key specifications for TSA141300: Voltage in Volts: 120.0; Current Type: AC; End Item Identification: VALVE TRANSFER;CONTROL CABINET ASSY; Timer Type: ELECTRICAL. 7 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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