Fuse Body Tube for Power Protection
Fuse body tubes for power protection applications in LV/MV/HV fuse assemblies. Manufactured from ceramic-filled epoxy glass or other insulation-grade laminates to customer drawings. The body tube provides structural integrity, electrical insulation and arc containment for current-limiting, expulsion and high-breaking-capacity fuses.
Fuse body tubes for power protection applications in LV/MV/HV fuse assemblies. Manufactured from ceramic-filled epoxy glass or other insulation-grade laminates to customer drawings. The body tube provides structural integrity, electrical insulation and arc containment for current-limiting, expulsion and high-breaking-capacity fuses.
Technical specifications
| Application | Fuse body for power protection (LV/MV/HV) |
| Material | Ceramic-filled epoxy glass (G10/FR-4) or as specified |
| Voltage class | Up to 35 kV |
| Operating temperature | -40 C to +130 C (epoxy glass) |
| Dielectric strength | >= 20 kV/mm (per ASTM D2583) |
| Arc resistance | High arc-intrack resistance (HaI <= 100J) |
| Surface resistance | > 10^12 ohm (clean, dry) |
| Flame retardancy | UL 94 V-0 (material dependent) |
💾 Datasheets & Test Reports
Download the technical data sheet for this product (PDF).
Information required for quotation
| Base tube | Approved material grade, ID, OD, wall and conditioning as per drawing |
| Datums | Drawing datum scheme and measurement reference |
| Key dimensions | Feature positions, depths, pitch and diameters reviewed before quotation |
| Thread / profile | Standard or custom profile, class, depth, engagement and gage method |
| Other features | Holes, slots, steps, chamfers, cuts and marking |
| Acceptance | Tolerances, sampling, gages, FAI and inspection report |
| Order | Prototype and production quantity, packaging and delivery target |
Applications by industry
- Power transformer protection fuses (LV/MV/HV)
- Switchgear and distribution panel fuse bodies
- Motor circuit protection and backup fuses
- Renewable energy (solar/wind) system overcurrent protection
- Industrial power distribution fuse assemblies
- Telecom and datacom equipment power protection fuses
Why epoxy-bonded fiberglass for this application
Epoxy-bonded fiberglass (G10, FR-4) offers high mechanical strength, excellent dielectric properties and superior arc resistance for electrical insulation in demanding environments.
Higher density than organic films; machining produces dust requiring extraction. Not chemical-resistant to strong acids/bases at elevated temperatures.
Standards: ASTM D2583 (G10), IPC-4101 (FR-4), IEC 60672 (thermal).
Feature and remaining-wall review
Diamond-coated tools for clean edges; CNC turning, grinding and drilling to drawing. Dimensional stability excellent with controlled moisture content. Review feature depth, edge distance and remaining wall against critical geometries. Capability is confirmed on your drawing, not from a blanket tolerance.
Inspection and traceability
We state the control plan with you. Batch traceability links raw material lot to finished part.
- First-article inspection (FAI) per your plan
- In-process dimensional checks at every station
- Batch certificate of conformance (COA) supplied on request
- Lot traceability to incoming material certificate
- Dielectric strength and insulation resistance testing available on request
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Synthetic Arc-Quenching Fuse Tubes
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Common questions
What is the difference between G10 and FR-4?
G10 is the base epoxy-glass laminate; FR-4 is the flame-retardant grade per IPC-4101 specification. Both share mechanical and dielectric properties. Specify FR-4 where UL flammability rating is required.
What voltage class can epoxy glass handle?
Dielectric strength ≥ 20 kV/mm. Voltage rating depends on thickness, geometry and safety factor — your drawing determines the insulation level.
Can epoxy glass be machined to tight tolerances?
Yes. We hold ±0.05 mm on ID/OD with CNC turning and grinding using diamond-coated tools to avoid delamination.
Is epoxy glass arc-resistant?
It has good arc resistance but is not arc-quenching. For direct arc contact, pair with ceramic-filled or synthetic arc-quenching composites.
What certifications do you provide?
Material COA, batch traceability, first-article and final inspection per your plan. Certificates comply with RoHS and REACH on request.
Engineering Guides & Selection Notes
Related technical articles that help specify this product.
Get pricing for Fuse Body Tube for Power Protection
Attach the drawing with annual volume. We check the material against your duty and tolerance, verify ID / OD / wall / features, and respond with manufacturability notes and pricing.