💡 Industrial G5 / G9 Melamine Glass Laminate Specification

Our MFGC201 G5 Melamine Glass Laminated Sheet is a premium, heavy-duty electrical insulation composite constructed from electrical-grade alkali-free woven glass cloth thoroughly impregnated with a specialized melamine formaldehyde resin matrix, synchronized under intensive thermal heat and high pressure.

Equivalent to the international NEMA G5 and G9 standards, this material is globally recognized for its exceptional arc extinguishing capabilities and high-voltage safety parameters.

As a source B2B manufacturer, Wuxi Shangjue Technology offers bulk master sheet distribution alongside advanced turnkey CNC machining services based on your CAD blueprints or physical samples.

⚙️ Section 1: Our B2B Wholesale & Custom Advantages

Bulk Wholesale Master Panels: We supply standard 1020mm × 2040mm master laminates with flexible thickness options ranging from 0.5mm to 50mm. Large factory-direct inventory guarantees stable lead times and aggressive volume pricing.
Turnkey Custom Processing (Drawings & Samples): Backed by high-precision automated milling centers and lathes, we can cut, drill, slot, chamfer, and thread G5 sheets into precise finished parts. Simply send us your .DXF, .DWG, or .STEP files, or mail us a physical prototype for a 1:1 replica.
Premium Mechanical Performance: With a perpendicular flexural strength of 318 MPa and an impact strength of 30 kJ/m², our G5 boards can undergo heavy-duty structural machining without cracking or edge delamination.

🌟 Section 2: Certified Technical Highlights & Performance

Elite Arc Resistance ( $\ge 182$ Seconds): Explicitly designed to suppress, restrict, and extinguish high-voltage industrial electrical arcs, protecting expensive infrastructure from critical blowouts.
Superior Tracking Index (CTI 600V): Boasts a certified Comparative Tracking Index of 600V, preventing surface tracking or dielectric breakdowns even in heavily contaminated or high-humidity operational zones.
Halogen-Free & Self-Extinguishing (FV0 Grade): Fully complies with FV0 (equivalent to UL94 V-0) fire safety ratings. It contains zero toxic halogens, generating minimal smoke if subjected to direct flames.
Excellent Electrical Insulation in Moisture: Features an exceptional dielectric strength of 12.5 kV/mm (tested in 20°C transformer oil) and remarkably low water absorption ( $\le 36$ mg), guaranteeing stable dielectric parameters under ambient moisture.

📊 Section 3: Professional Technical Datasheet (Verified Values)

Inspection Item / Property	Standard / Reference Value	Certified Actual Result
Material Designation	MFGC201 (NEMA G5 / G9 Equivalent)	Melamine Glass Composite
Perpendicular Flexural Strength	$\ge 280$ MPa	318 MPa
Comparative Tracking Index (CTI)	$\ge 550$ V	600 V
Arc Resistance	$\ge 180$ Seconds	182 Seconds
Dielectric Strength (in 20°C Oil)	$\ge 7.0$ kV/mm	12.5 kV/mm
Parallel Breakdown Voltage	$\ge 23$ kV	55 kV
Flame Retardancy Rating	FV0 Standard	FV0 Grade (UL94 V-0 Equiv.)
Density	1.70 $\sim$ 2.10 g/cm³	1.92 g/cm³

🎯 Section 4: Critical B2B Industrial Applications

Thanks to its extreme anti-arc and tracking resistance, MFGC201 G5 components are vital safety components across vast industrial supply chains:

Heavy-Duty Switchgears & Power Distribution: Switchboard panels, circuit breaker structural parts, mounting bases, phase separators, and busbar structural insulation brackets.
Arc Extinguishing Chambers: High-voltage arc barriers, terminal blocks, terminal strip boards, and protective safety curtains.
Heavy Motors & Power Stations: Electric motor slot wedges, generator end-insulation plates, and electro-chemical insulation spacers.
Harsh Industrial Operations: Extensively deployed in Substation Transmissions, Subways/Railway grids, Mining furnaces, Aluminum electrolysis plants, and Aerospace structural insulation.

📩 Request a Wholesale Quote & Engineering DFM Review

Are you upgrading an electrical grid project or seeking a reliable Chinese factory for custom NEMA G5 / G9 Melamine parts?

📩 Contact Wuxi Shangjue Technology today! Send over your sizing profiles, volume requirements, or custom CAD layouts to get a wholesale quote and professional DFM analysis within 24 hours.