Built on Trust.
Certified for Excellence.
Certified for Excellence.
ISO 9001:2015
Quality Management
ISO 14001:2015
Environmental Management
ISO 45001:2018
Health & Safety
NABL Accredited
In-house Testing Lab
Approved by PGCIL
400 kV Class
Applications
Enamelled Wire Manufacturing
Class 155–180 windings
Motor Rewinding
Elevated temperature motors
Transformer Windings
Higher thermal class designs
Hermetic Applications
Refrigerator compressors
Overview
Modified Polyester Wire Enamels
UBL Modified Polyester wire enamels provide enhanced thermal performance over standard polyester grades, targeting Class 155 to Class 180 applications. They are formulated for improved refrigerant resistance in hermetic motor applications and offer better thermal shock performance for demanding winding conditions.
Thermal Class 155 / 180
Medium to high viscosity
Product Range
Available Grades
| Product Code | Thermal Class | Wire Range | Description |
|---|---|---|---|
| UB 101-36 | Class 155 (F) | 0.05–1.6 mm | Modified polyester enamel with enhanced refrigerant resistance for hermetic compressor motor windings. |
| UB 227-35 | Class 155 (F) | 0.05–1.6 mm | General purpose modified polyester enamel; improved thermal shock over standard polyester grades. |
| UB 235-35 U | Class 155 (F) | 0.05–1.6 mm | Modified polyester enamel for uniform and consistent film build; suitable for fine and medium wire ranges. |
| UB 251-38 F | Class 155 (F) | 0.05–1.6 mm | Fast-bake modified polyester enamel; high line speed processing; motors and transformer windings. |
| UB 256-40 | Class 180 (H) | 0.05–1.6 mm | High thermal class modified polyester for Class 180 applications; excellent chemical resistance. |
| UB 257-35 | Class 155 (F) | 0.05–1.6 mm | Modified polyester enamel with balanced mechanical and electrical properties; general motor and coil use. |
| UB 257-38 | Class 155 (F) | 0.05–1.6 mm | Variant of UB 257 series with optimised viscosity for improved film uniformity in automated enamelling. |
Wire Range
0.05 mm to 1.6 mm diameter
Thermal Class
Class 155 (F) and Class 180 (H)
Key Advantage
Improved refrigerant and chemical resistance over standard polyester
RoHS Compliance
All grades comply with RoHS Directive 2002/95/EC
Get Technical Data
Request a Technical Sheet
Share your application requirements and our engineering team will provide the relevant grade datasheet, tolerances, and pricing guidance.