What is the puncture voltage of the insulator?

The minimum voltage puncture voltage in the insulating medium is 160 kV.

What colors are available for this insulator?

The insulator is available in Grey, Brown, or White.

What is the minimum mechanical failing load?

The minimum mechanical failing load (bending) is not less than 12.5 kN.

Durable St-10j Ceramic Insulator for Reliable Electrical Equipment

Name: Durable St-10j Ceramic Insulator for Reliable Electrical Equipment
Brand: Jiangxi Johnson Electric Co., Ltd.
SKU: 2062992605

Jiangxi, ChinaJiangxi Johnson Electric Co., Ltd.

US$0.75-1.39

200 Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Application

High-voltage

Material

Porcelain

Model NO.

St-10j (A)

Structure

Pin Insulator

Type

A Type Insulator

Usage

High Voltage Power Transmission, Insulation, Electrical Installation

Size of Bearing Capacity

12.5kn

Certification

ISO9001, IEC

Color

Grey , Brown or White

Creepage Distance

900mm

Cantilever Strength

11kn

Net Weight

1.8kg

Transport Package

1000*1000*1000mm

Trademark

JOHNSON

Origin

China

HS Code

854620909

Production Capacity

100000

Key features

High Voltage Performance: Designed for high-voltage power transmission with 160kV puncture voltage and 100kV impulse withstand.

Durable Porcelain Material: Constructed from high-quality porcelain for superior insulation and long-term reliability.

Customizable Specifications: Offers full customization including creepage distance, cantilever strength, and net weight.

Multiple Color Options: Available in Grey, Brown, or White to suit various installation environments.

Certified Quality: Meets ISO9001 and IEC standards ensuring safety and performance compliance.

Low Failure Rate: Average annual failure rate is less than 0.0005 per unit for high reliability.

Strong Mechanical Load: Minimum mechanical failing load of 12.5kN ensures stability under stress.

Manufacturer Direct: Produced by a manufacturer with 8 years of export experience and 3 production lines.

Company profile

Exhibition ExperienceExperienced TeamProduction Process VisualizationCustomization from Samples

Jiangxi Johnson Electric Co., Ltd.

Jiangxi, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤1.15h CertifiedTerms of Payment: T/T, LC, D/P, etc.

AI-Powered supplier vetting

SummaryJiangxi Johnson Electric Company manufactures a broad range of electrical insulators and related fittings, with three production lines and 41–50 quality-control staff. It supports extensive customization, including customization from samples and designs, and follows uniform finished-product inspection instructions. However, the supplier reports no certification of management systems, no written procedures for service assessment, corrective actions, complaints, or quality assurance, and no overseas agents, warehouses, showrooms, or in-stock service. Its R&D evidence is limited: one year of R&D engineer experience is reported, with no new products in the past year, no ODM, 3D software design, SDK, or popular-brand OEM capability. Export sales account for 51%–70%, and the supplier has participated in one named offline trade show. Financial records are referenced for 2022–2024, but the provided slices do not establish financial strength.

Supplier typeThe supplier is an electrical-insulator manufacturer offering glass, porcelain, composite polymer insulators, transformer bushings, and end fittings. Its listed combined facilities include molding, drying, glazing, kiln, and related production equipment, supporting classification as a specialized manufacturing supplier.

CertificationsThe supplier reports no certification of supplier management systems. It also reports no written quality-assurance procedures or records, although finished-product inspection instructions are stated to be available and uniformly followed.

After-Sales capabilityThe supplier has no overseas agents or branches, overseas warehouse, showroom, inventory service, or written procedures and records for complaint handling, service assessment, or corrective and preventive actions. It does accept several quotation and payment terms and reports a one-month average lead time in both peak and off-season, but the documented after-sales infrastructure is deficient.

R&D capabilityInnovation evidence is weak: the supplier reports one year of total R&D-engineer experience, no new products in the past year, no 3D software design service, no ODM service, and no available SDK. It does offer several forms of design customization, but this does not establish strong product innovation capability.

Production capacityThe supplier operates three production lines, has 41–50 quality-control staff, and lists facilities covering molding, drying, glazing, kiln, and related processes. It also states that finished products are inspected under instructions that are uniformly followed; however, it reports no in-stock capacity and no valid manufacturing contract with associated subcontractors.

Customization capabilityThe supplier explicitly accepts customer designs and provides full, minor, flexible, sample-based, and design-based customization. This is direct evidence of broad customization capability, although 3D software design services are not provided.