Flyaford
Explore our certified low-to-medium voltage busbar support insulators engineered for maximum mechanical strength and dielectric reliability.
In-depth analysis of physical, electrical, and structural parameters required for modern high-density electrical switchgears and renewable power systems.
In modern low-to-medium voltage switchgear architecture, spatial efficiency and dielectric integrity are paramount design constraints. 25mm width insulators represent a standardized, highly versatile dimensional format designed to support copper and aluminum busbars against intense mechanical stresses generated during short-circuit fault conditions. As an original design manufacturer (ODM) and premier exporter, ZHEJIANG FLYAFORD ELECTRON CO., LTD. leverages thermosetting composite formulation to produce 25mm busbar insulators that exceed global electrical standards including IEC 61439, UL 94-V0, and ANSI standards.
The engineering imperative behind the 25mm profile lies in its optimal creepage distance-to-footprint ratio. By integrating high-grade Bulk Molding Compounds (BMC), Epoxy Molding Compounds (EMC), and Phenolic Resins (PF), our engineering team achieves tensile and cantilever strengths capable of withstanding dynamic electromagnetic forces exceeding 200kN, while maintaining exceptional thermal endurance across operating windows ranging from -40°C to +140°C.
| Material Formulation | Dielectric Strength (kV/mm) | Tensile Strength (MPa) | Flame Retardancy | Thermal Index (°C) | Primary Industrial Application |
|---|---|---|---|---|---|
| BMC (Bulk Molding Compound) | 18 - 22 | 50 - 70 | UL 94-V0 | 130 - 155 | Standard Switchgear & Power Distribution Cabinets |
| EMC (Epoxy Molding Compound) | 22 - 26 | 80 - 110 | UL 94-V0 / V1 | 155 - 180 | High-Humidity, Renewable BESS & Industrial VFDs |
| PF (Phenolic Resin) | 15 - 18 | 45 - 60 | UL 94-V0 | 120 - 140 | Cost-Effective Low Voltage Control Assemblies |
A global leader in high-performance thermoset insulator manufacturing with comprehensive R&D and advanced automation.
Situated in the Jinyi New District of Jinhua City, Zhejiang Province, ZHEJIANG FLYAFORD ELECTRON CO., LTD. was established in 2007. We specialize in the research, development, custom ODM molding, and large-scale export of low-to-medium voltage insulators and specialized electrical accessories.
Operating a state-of-the-art 35,000 square meter standard manufacturing facility equipped with over 60 automated molding machines and more than 20 advanced quality-testing instruments, our daily production capacity exceeds 200,000 pieces while strictly adhering to a defect rate below 100 PPM.
As a recognized "National High-Tech Enterprise" and "Zhejiang Provincial Specialized, Refined, Distinctive, and Innovative SME", Flyaford holds 26 utility and invention patents along with 2 software copyrights, operating the municipal-level Jinhua Feifav High-Performance Insulator Science and Technology R&D Center.
Equipped with a Microcomputer Torsion Testing Machine (0-500 N.m) and Universal Mechanical Testing Machine (0-200 kN) to verify insert torque retention and ultimate cantilever shear force.
Featuring a Partial Discharge Test Room (0-120 kV), Lightning Impulse Tester (0-300 kV), Withstand Voltage Tester (0-100 kV), and Insulation Resistance Analyzers up to 1 TΩ.
Double 85°C climatic chambers, High-Low Thermal Shock (-40°C to +140°C), Salt Spray Testers, and UL 94 vertical/horizontal flame test units.
Deploying reliable insulation technology across critical infrastructure, clean energy grids, and next-generation mobility.
Durable BMC/EMC insulators designed to resist high vibrational resonance and harmonic frequencies inside wind turbine nacelles and power conversion cabinets.
Compact 25mm profile provides high dielectric isolation between DC busbars in dense containerized lithium-ion energy storage systems.
UL-certified flame retardant standoff busbars engineered for fast-DC charging hubs, ensuring passenger safety and operational continuity.
Ultra-reliable insulation preventing tracking and arc-over in high-density power distribution units (PDUs) powering global telecommunication grids.
From initial CAD conception to mass compression molding, Flyaford delivers turnkey custom insulation solutions tailored to exact client drawings.
Collaborative 3D modeling, finite element stress analysis, and threaded brass/steel hardware insert optimization.
In-house CNC mold manufacturing guaranteeing dimensional tolerances within ±0.05mm for 25mm profile geometries.
Automated thermoset molding processes leveraging specialized BMC formulations for maximum flame resistance and zero voiding.
Every batch undergoes full electrical withstand test, visual surface check, torque validation, and packaging under IATF 16949 control.
Flyaford products adhere to rigorous environmental and safety protocols mandated by global markets.
Our quality management systems are fully certified under IATF 16949 (International Automotive Task Force), ISO 9001, and ISO 14001. All raw composite materials and finished standoff insulators comply with UL Certification, EU CE Safety Certification, ROHS 2.0, and REACH regulations, assuring seamless integration into North American, European, and Asia-Pacific power systems.






Expert answers regarding 25mm standoff insulators, material selection, custom ODM capabilities, and logistics.
The 25mm width profile balances compact structural footprint with standardized creeping distances required for operating voltages up to 12kV. It permits optimal spacing inside switchgears without compromising torque resistance or mechanical shear strength during short-circuit events.
BMC (Bulk Molding Compound) offers cost-effective, high electrical insulation and excellent UL 94-V0 flame retardancy for standard indoor switchgears. EMC (Epoxy Molding Compound) provides enhanced dielectric strength (up to 26 kV/mm) and higher thermal stability (up to 180°C), making it superior for harsh outdoor or high-humidity installations.
We offer complete customization of hardware inserts (brass, steel, metric/imperial threading such as M6, M8, M10, M12), overall insulator height, rib/creepage profile, composite material color, and specific flame/thermal ratings.
Our senior electrical engineering team provides 1-on-1 consultation, 3D CAD modeling, free prototype sampling for client testing, and technical documentation within 2 hours. Online technical support operates 24/7 globally.
Explore full product series options and our industry-university research alliance with Tsinghua University and top institutes.






Direct manufacturer export offering full traceability, competitive factory pricing, and certified global safety compliance.