3021 phenolic paper laminated board for low voltage apparatus is an economical laminated board with a national standard model number. The naming rule: "30" stands for paper-based laminated products, "2" for phenolic resin, and "1" for general grade. It is made by impregnating insulating paper with phenolic resin then hot-press curing, presenting a glossy brown surface. Compared with 3240 epoxy board, its mechanical strength is slightly lower, yet the price is much cheaper. Its breakdown voltage and insulation resistance fully satisfy the requirements of scenarios under 690V low voltage, making it the most cost-effective choice for low-voltage electrical appliances and instruments.
A low-voltage electrical manufacturer produces circuit breakers that need a large number of 1mm-thick insulating gaskets, with a monthly consumption of 5,000 pieces. They previously used 3240 epoxy boards with high costs. We recommended 3021 phenolic paper board, which costs half as much and has a breakdown voltage of 10kV – providing a sufficient safety margin for their 690V maximum operating voltage. After switching, they saved 80,000 RMB per year just on this material.
Another unique advantage of our 3021 board unavailable to most peers is ultra-thin sheet production capability. We can produce sheets from 0.3mm to 0.8mm with thickness tolerance within ±0.05mm, while most manufacturers can only reach a minimum thickness of 1mm. Ultra-thin sheets are widely demanded in micro electrical appliances and precision instruments, with limited competition – a great business opportunity for distributors.
Specification Parameters
|
Parameter Item |
Technical Index |
|
Thickness Range |
0.3～50mm |
|
Maximum Width |
1600mm |
|
Temperature Resistance Class |
Class E (120℃) |
|
Longitudinal Bending Strength |
≥120 MPa |
|
Vertical Breakdown Voltage |
≥12 kV |
|
Color |
Brown |
Application Fields
- Insulation gaskets and partitions for low-voltage electrical appliances
- Motor slot wedges and structural insulation parts
- Transformer blocks and supports
- Insulation boards for electronic equipment and instruments
- All insulation structural parts for low-voltage electrical devices
Payment Terms
For standard 3021 sheets, the payment term is 30% advance payment, 70% balance before shipment. Customized special thicknesses and sizes require 50% prepayment and 50% balance before delivery. We accept RMB and USD settlements. Long-term bulk clients can negotiate tiered pricing – the higher your annual purchase volume, the lower the unit price. Mixed orders with multiple specifications are acceptable as long as the total quantity meets the MOQ. We focus on long-term cooperation with transparent pricing, no inflated quotations or raw material substitution for low-bid orders.
Customization Capabilities
3021 phenolic board supports versatile customization. Thickness covers 0.3mm to 50mm, with ultra-thin sheets as our competitive edge. The maximum width is 1600mm, and we can cut to any custom length. We offer full machining services including stamping, sawing, drilling and chamfering. Many small clients lack processing equipment; supplying finished machined parts significantly boosts your competitiveness. OEM is fully supported with customized packaging and labels. The minimum order quantity is 500kg, and free samples are available for testing before bulk orders.
FAQ
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