Round Magnet Wire

MWS Wire / Round Magnet Wire

Magnet wire, also known as winding wire or enameled wire, is a copper or aluminum wire coated with a thin insulation and is a principal component of transformers, inductors, motors, and other electrical devices.

The enamel is typically a polymer film that provides a tough continuous layer of insulation. Resins used in the development of enamels are designed with wire properties in mind like abrasion resistance, solderability, and thermal rating. Enameled wires are engineered to meet temperature classes from 105 to 240°C guaranteeing service life at rated temperature for 20,000 hours.

Self-supporting coils use magnet wire with an outermost thermoplastic layer that bonds coil layers together when heated or solvent activated.

MWS offers thousands of magnet wire sizes and types to meet your application and production requirements.

round magnet wire featured

Magnet Wire Insulations

Temperature Class, Type and Specification Cross Reference

THERMAL
CLASS
INSULATION TYPEMWS
PRODUCT
CODE
NEMA STANDARD
(NW1000)
IEC STANDARD
(60317)
FEDERAL
SPECIFICATION
105°Plain Enamel PENONENONENONE
Formvar (RD)FMW 15 (RD)
MW 18 (SQ & RECT)
60317-1 (RD)
60317-17 (SQ & RECT)
JW 1177/14 (RD)
JW1177/16 (SQ & RECT)
155°Polyurethane - 155P155MW7960317-20JW 1177/ 41
Polyurethane Nylon - 155PN155MW8060317-21JW 1177/ 42
Polyurethane Bondable - 155PB155MW13160317-35NONE
Polyurethane Nylon Bondable - 155PNB155MW136NONENONE
180°Polyurethane - 180P180MW8260317-51NONE
Polyurethane Nylon - 180PN180MW8360317-55NONE
Polyester-imidePTMW3060317-8JW 1177/ 12
Polyester-NylonPTNMW7660317-22JW 1177/ 38
Solderable PolyesterSPTMW7760317-23JW 1177/ 39
Solderable Polyester NylonSPTNMW78NONEJW 1177/ 40
Polyurethane Bondable - 180PB180MW132NONENONE
Polyurethane Nylon Bondable - 180PNB180MW137NONENONE
Polyester-imide BondablePTBNONE60317-37NONE
Polyester-amide-imide BondableAPTBMW10260317-38NONE
Solderable Polyester BondableSPTBNONE60317-36NONE
200°Polyester - 200PT200MW7460317-42JW 1177/43
Polyester A/ I TopcoatAPTMW 35 (RD)
MW 36 (SQ & RECT
60317-13 (RD)
60317-29 (SQ & RECT)
JW 1177/ 14 (RD) JW1177/ 13 (SQ & RECT)
Polyester A/ I Polyamideimide APTIGMW7360317-13NONE
240°Polyimide - ML* MLMW 16 (RD)
MW 20 (SQ & RECT)
60317-46 (RD)
60317-47 (SQ & RECT)
JW 1177/ 15 (RD) JW1177/ 18 (SQ & RECT)