PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51203Switch,flow

Setra Systems, Inc. Dba Gems Sensors · NSN 5930-01-237-3968 · FSC 5930 · No Item Name Available
Verified by PartsTable
NSN 5930-01-237-3968 — this item is cataloged by the U.S. Government under National Stock Number 5930-01-237-3968. Primary manufacturer part number: 51203.
Features
  • Switch,flow — FSC 5930
  • Body Length: 2.875 INCHES NOMINAL IN
  • Features Provided: HERMETICALLY SEALED CASE
  • Contact Stimulus Rating: 3.50 DEACTUATION POINT NOMINAL GALLONS PER MINUTE
  • Media for Which Designed: LIQUID
  • Contact Voltage Rating in Volts: 220.0 AC AT SEA LEVEL FIRST VOLTAGE
  • Hazardous Locations/environmental Protection: CORROSION RESISTANT AND VIBRATION RESISTANT
  • Contact Action Stimulus: DECREASE
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,flow, cataloged under National Stock Number 5930-01-237-3968, is classified within Federal Supply Class 5930 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Setra Systems, Inc. Dba Gems Sensors. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5930-01-237-3968
Primary Part Number51203
Item NameSwitch,flow
FSC / FSG5930 / 59 — No Item Name Available
ManufacturerSetra Systems, Inc. Dba Gems Sensors
StatusACTIVE
Body Length2.875 INCHES NOMINAL IN
Features ProvidedHERMETICALLY SEALED CASE
Contact Stimulus Rating3.50 DEACTUATION POINT NOMINAL GALLONS PER MINUTE
Media for Which DesignedLIQUID
Contact Voltage Rating in Volts220.0 AC AT SEA LEVEL FIRST VOLTAGE
Hazardous Locations/environmental ProtectionCORROSION RESISTANT AND VIBRATION RESISTANT
Contact Action StimulusDECREASE
Contact Voltage Rating in Volts32.0 DC AT SEA LEVEL SECOND VOLTAGE
Nonpile-Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Contact Load Current Rating45.4 MILLIAMPERES RESISTIVE LOAD FIRST VOLTAGE
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE
Style DesignatorRECTANGULAR
Mounting MethodLINE
Contact Load Current Rating500.0 MILLIAMPERES RESISTIVE LOAD SECOND VOLTAGE
Terminal TypeWIRE LEAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6105-00-169-8514 INTERCHANGEABLE
Stator,motor
8345-00-265-7510 INTERCHANGEABLE
Flag,individual
2520-00-717-151451203 INTERCHANGEABLE
Universal Joint,vehicular
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
8345-00-926-6626 INTERCHANGEABLE
Flag,identification
3110-01-013-970151203 INTERCHANGEABLE
Bearing,ball,annular
Fag Bearings Corporation
5315-01-049-754151203 INTERCHANGEABLE
Pin,spring
Paccar Winch Inc Dba Paccar Winch Division
5945-01-196-2036 INTERCHANGEABLE
Solenoid,electrical
5998-01-217-5934 INTERCHANGEABLE
Holder,electrical Card
6105-01-220-47625120-3 INTERCHANGEABLE
Motor,alternating Current
Kearfott Corp Div Kearfott Corporation
5995-01-332-6837003112-26 INTERCHANGEABLE
Cable Assembly,radio Frequency
Fjc Electronics Inc
Cross-Reference Index
Part NumberManufacturer
51203 PRIMARY Setra Systems, Inc. Dba Gems Sensors (USA)
Related Parts
6105-00-169-8514INTERCHANGEABLE
STATOR,MOTOR
8345-00-265-7510INTERCHANGEABLE
FLAG,INDIVIDUAL
2520-00-717-1514INTERCHANGEABLE
UNIVERSAL JOINT,VEHICULAR
51203
8345-00-926-6626INTERCHANGEABLE
FLAG,IDENTIFICATION
3110-01-013-9701INTERCHANGEABLE
BEARING,BALL,ANNULAR
51203
5315-01-049-7541INTERCHANGEABLE
PIN,SPRING
51203
5945-01-196-2036INTERCHANGEABLE
SOLENOID,ELECTRICAL
5998-01-217-5934INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
6105-01-220-4762INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5120-3
5995-01-332-6837INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
003112-26
4330-01-388-6183INTERCHANGEABLE
FILTER ELEMENT,FLUID
0775795
4530-01-396-9515INTERCHANGEABLE
BURNER HEAD UNIT

Frequently Asked Questions

What is NSN 5930-01-237-3968?

NSN 5930-01-237-3968 is a Switch,flow, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 5930 (No Item Name Available). Status: active.

What are the part numbers for NSN 5930-01-237-3968?

NSN 5930-01-237-3968 has 1 cross-referenced part number: 51203 (Setra Systems, Inc. Dba Gems Sensors).

What NSN replaces 5930-01-237-3968?

There are 12 known substitutes for 5930-01-237-3968: 6105-00-169-8514, 8345-00-265-7510, 2520-00-717-1514 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51203?

Key specifications for 51203: Body Length: 2.875 INCHES NOMINAL IN; Features Provided: HERMETICALLY SEALED CASE; Contact Stimulus Rating: 3.50 DEACTUATION POINT NOMINAL GALLONS PER MINUTE; Media for Which Designed: LIQUID. 18 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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