PartsTable
Technical Data Sheet
PartsTable / MRO / B-30
B-30 ✓ Verified by PartsTable
Braun · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

THERMAL RELEASE,CIRCUIT BREAKER. Key specifications include phase: THREE, width: 5.594 INCHES NOMINAL IN, length: 5.125 INCHES NOMINAL IN, material: COPPER ALLOY BRUSH PART, thickness: 0.250 INCHES NOMINAL IN, unit_type: DESK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-3416, 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
MRO→ MRO_GENERAL→ B-30
NSN: 3110-00-156-3416
FSC: 3110
CAGE: 00724 — RAYTHEON COMPANY (USA)
SPECIFICATIONS
phaseTHREE
width5.594 INCHES NOMINAL IN
length5.125 INCHES NOMINAL IN
materialCOPPER ALLOY BRUSH PART
thickness0.250 INCHES NOMINAL IN
unit_typeDESK
bore_shapeSTRAIGHT
ring_styleEXTERNAL INVERTED LUGS
skirt_styleFLARED
table_width29.000 INCHES MINIMUM IN
current_typeAC
drive_methodELECTRIC MOTOR
NSN3110-00-156-3416
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: B-30 · Braun ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
•
LUBRICATION MATERIAL: GREASE
•
OUTER RING WIDTH: 0.3150 INCHES NOMINAL IN
•
RETAINER FABRICATION METHOD: PRESSED
•
INNER RING WIDTH: 0.3860 INCHES NOMINAL IN
•
INTERNAL FIT-UP DESIGNATION: STANDARD
TECHNICAL CHARACTERISTICS (FLIS)
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
LUBRICATION MATERIALGREASE
OUTER RING WIDTH0.3150 INCHES NOMINAL IN
RETAINER FABRICATION METHODPRESSED
INNER RING WIDTH0.3860 INCHES NOMINAL IN
LOAD DIRECTIONRADIAL
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
B30Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-80095TYPE1SIZE36Interchangeable
interchangeable cross-reference
interchangeable
TIP00877-050CT70Interchangeable
interchangeable cross-reference
interchangeable
5301-0250Interchangeable
interchangeable cross-reference
interchangeable
685RH-1/4-3/8SInterchangeable
interchangeable cross-reference
interchangeable
B8-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-30?
B-30 is a THERMAL RELEASE,CIRCUIT BREAKER manufactured by Braun. It is classified as a MRO (MRO_GENERAL).
What parts can replace B-30?
There are 31 known substitutes for B-30: B30, MIL-S-80095TYPE1SIZE36, TIP00877-050CT70 and 28 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-30?
B-30 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-3416. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026