MWS Wire /
Why use shaped magnet wire over round magnet wire?
Shaped magnet wire lends itself to specific applications where the precise geometry of the coil is critical to its function. In addition to round magnet wire, MWS can produce rectangular magnet wire and as well as square and Microsquare Magnet Wire®.
Rectangular Magnet Wire
MWS Wire Industries is a custom producer of film insulated rectangular magnet wire. MWS has the capability to produce larger transformer wires in sizes up to .400″ in width down to the smaller insulated ribbon with a thickness starting around .001″ and typically found in pancake coils. With a variety of enamels to choose from and low quantity minimums, MWS can meet your custom insulated ribbon wire needs.
Square Magnet Wire
Square magnet wire is useful where space constraints are concerned. When formed into a coil an equivalent amount of square wire put in a coil can be placed in a tighter coil configuration than the same amount of round wire. This enables engineers to create compact coils and small motors that deliver more power in less space.
Shaped Wire
Technical Data
Need more info about Shaped Magnet Wire?
See the Data Sheet in our Tech Book.
Product Spotlight
High Dielectric Constant
FORMVAR (F)
NEMA STANDARD (NW1000): MW18
IEC STANDARD (60317): 60317-17
FEDERAL SPEC.: JW1177/16
An early synthetic insulation composed of modified polyvinyl resins designed for continuous operation at 105C
• Excellent abrasion resistance
• Compatible with most varnishes and impregnating compounds
Applications: Oil filled transformers, motors, solenoids, superconducting coils or other cryogenic applications
Polyesters Non Solderable
Polyesteramideimide-200 (APT)
NEMA STANDARD (NW1000): MW36
IEC STANDARD (60317): 60317-29
FEDERAL SPECIFICATION: JW 1177/13
A dual coat system composed of THEIC modified polyester, combined with a corona resistant shield coat of polyamideimide (A/I) overcoat designed to withstand severe voltage stresses.
Applications: High voltage motors and high temperature applications
High Temperature
Polyimide - ML* (ML)
NEMA STANDARD (NW1000): MW20
IEC STANDARD (60317): 60317-47
FEDERAL SPECIFICATION: JW 1177/ 18
Film composed of aromatic polyimide resin with high cut through, exceptional chemical resistance, and minimal outgassing
• capable of continuous operation at 240°C
• Operation in extremely harsh environments with high and low temperatures
Applications: Cryogenics, high temperature continuous duty coils, hermetically sealed relays, fractional and integral HP motors
* Registered trademark of Industrial Summit Technology
Insulated Large Square Magnet Wire - Copper
| Bare Copper | Heavy Build | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size (AWG) | Dimensions (inches) | Resistance* (ohms per 1000 ft. at 20° C) | Square Mils | Corner Radius | Pounds Per | Dimensions (inches) | ||||||
| MIN | NOM | MAX | MIN | NOM | MAX | NOM | NOM | 1000FT | MIN INCREASE | MIN O.D. | MAX O.D. | |
| 1 | .2864 | .2893 | .2922 | .09627 | .09895 | .1020 | 82,320 | .039 | 317.2 | .003 | .2894 | .2972 |
| 2 | .2550 | .2576 | .2602 | .1217 | .1253 | .1295 | 64,980 | .039 | 250.4 | .003 | .2580 | .2652 |
| 3 | .2271 | .2294 | .2317 | .1539 | .1589 | .1648 | 51,250 | .039 | 197.5 | .003 | .2301 | .2367 |
| 4 | .2023 | .2043 | .2063 | .1949 | .2018 | .2100 | 40,370 | .039 | 155.6 | .003 | .2053 | .2113 |
| 5 | .1801 | .1819 | .1837 | .2470 | .2568 | .2689 | 31,710 | .039 | 122.2 | .003 | .1831 | .1887 |
| 6 | .1604 | .1620 | .1636 | .3101 | .3211 | .3345 | 25,360 | .031 | 97.75 | .003 | .1634 | .1686 |
| 7 | .1429 | .1443 | .1457 | .3929 | .4084 | .4277 | 19,940 | .031 | 76.86 | .003 | .1459 | .1507 |
| 8 | .1272 | .1285 | .1298 | .4981 | .5210 | .5501 | 15,630 | .031 | 60.25 | .003 | .1302 | .1348 |
| 9 | .1133 | .1144 | .1155 | .6267 | .6513 | .6812 | 12,510 | .026 | 48.20 | .003 | .1163 | .1205 |
| 10 | .1009 | .1019 | .1029 | .7951 | .8309 | .8757 | 9,803 | .026 | 37.78 | .003 | .1039 | .1079 |
| 11 | .0897 | .0907 | .0917 | .9914 | 1.033 | 1.085 | 7,883 | .020 | 30.38 | .003 | .0927 | .0967 |
| 12 | .0798 | .0808 | .0818 | 1.254 | 1.317 | 1.397 | 6,185 | .020 | 23.84 | .003 | .0828 | .0868 |
| 13 | .0710 | .0720 | .0730 | 1.565 | 1.641 | 1.734 | 4,964 | .016 | 19.13 | .003 | .0740 | .0780 |
| 14 | .0631 | .0641 | .0651 | 1.980 | 2.094 | 2.239 | 3,889 | .016 | 14.99 | .003 | .0661 | .0701 |
* Based on 100% conductivity IACS
Insulated Large Square Magnet Wire - Aluminum
| Bare Aluminum | Heavy Build | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size (AWG) | Dimensions (inches) | Resistance* (ohms per 1000 ft. at 20° C) | Square Mils | Corner Radius | Pounds Per | Dimensions (inches) | ||||||
| MIN | NOM | MAX | MIN | NOM | MAX | NOM | NOM | 1000FT | MIN INCREASE | MIN O.D. | MAX O.D. | |
| 1 | .2864 | .2893 | .2922 | .1558 | .1601 | .1650 | 8,2320 | .040 | 96.46 | .003 | .2894 | .2972 |
| 2 | .2550 | .2576 | .2602 | .1969 | .2028 | .2096 | 64,980 | .040 | 76.15 | .003 | .2580 | .2652 |
| 3 | .2271 | .2294 | .2317 | .2491 | .2572 | .2666 | 51,250 | .040 | 60.06 | .003 | .2301 | .2367 |
| 4 | .2023 | .2043 | .2063 | .3154 | .3265 | .3399 | 40,370 | .040 | 47.30 | .003 | .2053 | .2113 |
| 5 | .1801 | .1819 | .1837 | 3997 | .4156 | .4351 | 31,710 | .040 | 37.16 | .003 | .1831 | .1887 |
| 6 | .1604 | .1620 | .1636 | .5017 | .5196 | .5412 | 25,360 | .032 | 29.72 | .003 | .1634 | .1686 |
| 7 | .1429 | .1443 | .1457 | .6357 | .6609 | .6920 | 19,940 | .032 | 23.37 | .003 | .1459 | .1507 |
| 8 | .1272 | .1285 | .1298 | .8059 | .8431 | .8902 | 15,630 | .040 | 18.32 | .003 | .1302 | .1348 |
| 9 | .1133 | .1144 | .1155 | 1.014 | 1.054 | 1.102 | 12,510 | .026 | 14.66 | .003 | .1163 | .1205 |
| 10 | .1009 | .1019 | .1029 | 1.286 | 1.344 | 1.417 | 9,803 | .026 | 11.49 | .003 | .1039 | .1079 |
| 11 | .0897 | .0907 | .0917 | 1.604 | 1.672 | 1.755 | 7,883 | .020 | 9.237 | .003 | .0927 | .0967 |
| 12 | .0798 | .0808 | .0818 | 2.028 | 2.131 | 2.260 | 6,185 | .020 | 7.248 | .003 | .0828 | .0868 |
| 13 | .0710 | .0720 | .0730 | 2.532 | 2.655 | 2.806 | 4,964 | .016 | 5.817 | .003 | .0740 | .0780 |
| 14 | .0631 | .0641 | .0651 | 3.203 | 3.389 | 3.623 | 3,889 | .016 | 4.557 | .003 | .0661 | .0701 |
* Based on 61.8% conductivity IACS
Square Magnet Wire Data
Special Processes
Our magnet wire can be customized to your exact need
- Ablated
- Annealed
- Bondable
- Cut to length
- Custom shapes
- Spooling
Ablated | Annealed | Bondable | Cut to length | Custom shapes | Spooling
Ask a sales representative about any special temper or wire finish.
