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Technical Data Sheet
FH78 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The RELAY,THERMAL is a the manufacturer industrial component. Key specifications include material: IRON CAST, body_style: HOLE MOUNTED, housing_width: 1.156 INCHES NOMINAL IN, actuator_style: ROLLER ARM, housing_height: 1.125 INCHES NOMINAL IN, housing_length: 2.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-135-6187, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
FH78
NSN: 5945-00-135-6187
FSC: 5945
CAGE: 89946 — EATON CORPORATION DBA EATON INOAC (USA)
SPECIFICATIONS
materialIRON CAST
body_styleHOLE MOUNTED
housing_width1.156 INCHES NOMINAL IN
actuator_styleROLLER ARM
housing_height1.125 INCHES NOMINAL IN
housing_length2.000 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
overall_length1.250 INCHES NOMINAL IN
inside_diameter0.875 INCHES NOMINAL IN
actuator_movement0.100 PRETRAVEL INCHES MAXIMUM AND 0.125 OVERTRAVEL INCHES MINIMUM AND 0.030 DIFFERENTIAL INCHES NOMINAL
features_providedACTUATOR SEAL
taper_included_angle3 DEGREE 34 MINUTES
NSN5945-00-135-6187
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,THERMAL TITLE COMPONENT PN FH78 MFR RELAY,THERMAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
H78Interchangeable
interchangeable cross-reference
interchangeable
990-6040Interchangeable
interchangeable cross-reference
interchangeable
DMS 81010BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FH78?
FH78 is a RELAY,THERMAL.
What parts can replace FH78?
There are 3 known substitutes for FH78: H78, 990-6040, DMS 81010B. Substitute compatibility should be verified for your specific system.
What is the NSN for FH78?
FH78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-135-6187. This indicates validated use in U.S. government and defense supply chains.
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