3240 fiberglass epoxy laminate board for electrical equipment ranks among the most widely used rigid insulation boards across electrical industries. The model number 3240 follows national standard naming conventions: "32" designates laminated products, "4" denotes epoxy resin, and "0" indicates no special specifications. Manufactured by impregnating non-alkali glass fiber cloth substrates with epoxy resin followed by heating and pressurizing for curing, it features pale yellow smooth flat surfaces with extremely high mechanical strength. Combining glass fiber's superior structural strength and epoxy resin's excellent insulation performance, 3240 epoxy board finds broad application in high-voltage switches, motor terminal boards, transformer clamping piece insulation, circuit breaker components and other scenarios requiring simultaneous strength and insulation performance, serving as standard insulation material for all electrical equipment.
A high-voltage switch manufacturer required insulation partitions with mandatory breakdown voltage above 30kV and bending strength above 300MPa, previously relying on costly imported boards. We sent 5mm thick 3240 epoxy board samples, which delivered test results of 35kV breakdown voltage and 380MPa bending strength fully meeting all requirements at half the price of imported alternatives. They now place annual orders of 2,000 sheets. Our 3240 fiberglass epoxy laminate board for electrical equipment exclusively adopts Grade A non-alkali glass fiber cloth and pure epoxy resin free of fillers or recycled materials, resisting delamination and bubbling during machining processes. Many low-cost counterfeit 3240 boards utilize inferior raw materials with identical visual appearance yet suffer edge chipping during drilling, layered grooving and sharp insulation performance declines after moisture absorption – counterfeit products we refuse to manufacture.
Specification Parameters
|
Parameter Item |
Technical Index |
|
Thickness Range |
0.5～50mm |
|
Maximum Width |
1600mm |
|
Temperature Resistance Class |
Class B (130℃) |
|
Longitudinal Bending Strength |
≥380 MPa |
|
Vertical Breakdown Voltage |
≥25 kV |
|
Density |
Approx. 1.8 g/cm³ |
Application Fields
- Insulation partitions and structural parts of high-voltage switches
- Motor terminal boards and terminal insulation
- Transformer clamping piece insulation and support parts
- Insulation components of circuit breakers and contactors
- Insulation structural parts for all types of electrical equipment
Qualification Certifications
Our 3240 epoxy board has undergone testing by authoritative institutions with all performance indicators complying with GB/T 1303.1 national standards. The company holds ISO9001 quality management system certification with full process control covering raw material procurement to finished product delivery. Environmentally, products comply with RoHS and REACH directives free of restricted substances including lead, mercury and cadmium for seamless export to all global regions. Flame retardancy reaches UL94 V1 grade with upgraded flame retardant variants achieving UL94 V0 grade. We support third-party factory inspections with designated testing institutions authorized to conduct on-site sampling or sealed sample testing. For large-scale projects or high-end customer requirements, we can coordinate dedicated testing and certification services to supply complete qualification documentation supporting project bidding and customer certification processes.
After-sales Service
We deliver full-process service support spanning model selection to machining. Pre-sales technical personnel coordinate your application scenarios to recommend optimal thickness and specifications eliminating waste from over-thick selection or insufficient insulation from under-thick selection. If machining services are required, our engineers coordinate drawings with you to confirm tolerance requirements and machining processes, conducting prototype validation prior to mass production. During manufacturing, we proactively share production progress photos and videos eliminating follow-up reminders required from customers. We respond within 8 hours and deliver resolution plans within 24 hours for any quality issues arising after goods arrival, with unconditional returns and replacements confirmed for quality defects originating from our factory. Regular follow-up visits monitor real-world product performance with immediate adjustment implementation upon identifying optimization opportunities. Each customer is assigned an exclusive dedicated contact person to guarantee uninterrupted service coordination.
Packaging & Transportation
As rigid panels, 3240 epoxy boards risk edge chipping and collision damage during transportation with standardized packaging protocols implemented to mitigate risks: each panel is separated with moisture-proof paper to prevent surface scratching and moisture absorption; hard paper corner protectors shield all four edges to eliminate collision damage during transit; the outer layer is reinforced with thickened wooden pallets for forklift handling protection without panel damage. Clear labels affixed to each package indicate product name, specifications, quantity, batch number and production date. Export orders receive ocean-shipping compliant reinforced packaging with fumigated pallets to guarantee intact port arrival. Trade terms EXW and FOB are supported with FOB Wenzhou Port and export customs documentation assistance available upon request. Standard thicknesses with ready stock ship within 3-5 days; machined products deliver within 7-15 days based on process complexity.
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