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Winding wire

SHTherm® 210 Alu

  • Enamelled Al.Wire acc.
  • Insulated with theic-mod. polyesterimide and amid-imid topcoat
  • Class 200

SHTherm® 210 AL is a highly thermo-resistant enamelled aluminium wire of heat performance class N with a wide range of good and very good quality features. As it is a dual-coat wire its insulation film consists of two different coatings on top of one another. These ensure: a very good permanent thermal and overload resistance, excellent esistance to chemical attacks e.g. by alkalines, washing and cleaning agents, impregnating varnishes and resins, sealing compounds, thinners, solvents and refrigerants as well as their vapours, an excellent mechanical abrasion resistance.
On demand the system can be offered with an additional layer of selflubricating enamel thus giving enhanced properties for winding operations.


Control gears, drives for household equipment, electric motor drives, pump drives, refrigerators, transformers


IEC /DIN EN 60317-25
NEMA MW 35-A / 73-A
UL approved

Delivery forms

Grade 1: 1.250 - 4.000 mm
Grade 2: 1.250 - 4.000 mm
< 1.250 mm on request
> 4.000 mm on request

Technical data

Typical properties of enamelled round aluminium wire 0.600 m, with insulation film grade 1

Outer diameter with varnish  Bare wire diameter  Elongation and adhesion  Scrape resistance  Pencil hardness of varnish  Elongation at break  Coefficient of friction 
Unit of measure Set value  Actual value 
mm  min. 0.627 - max. 0.649 as set value
mm  0.594-0.606 as set value
  3 x d 2 x d
≥ 2,2 ≥ 3.5
  H 4H - 5H
≥ 12 ≥ 20
µ  / ≤ 0.140
Temperature index TI  Cut through temperature (pre-heated block)  Dielectric loss factor (bending point)  Heat shock at 220 °C (no cracks in varnish coat after winding)  Solderability 
Unit of measure Set value  Actual value 
  200 207
°C  / /
(°C) (tan δ)  / ≥ 185
  3 x d 3 x d
  no no
Dielectric strength RT  High voltage discontiniuties 1000V  Electrical conductivity 
Unit of measure Set value  Actual value 
kV  ≥ 2.6 (twist) ≥ 3 (cylinder)
  ≤ 25 on 30 m ≤ 7 on 100 m
MS/m  35.5 - 36.2 ≥ 35.85
Pencil hardness (storage in standard solvent ½ h / 60 °C)  Pencil hardness (storage in alcohol ½ h / 60 °C)  Resistance to commercial impregnants^(1)  Resistance to commercial refrigerants^(1)  Resistant to dry transformer oils^(1)  Resistance to hydraulic oils^(1) 
Set value  Actual value 
min. H 3H - 5H
min. H 3H - 5H
/ yes
/ yes
/ yes
/ yes

(1) Due to the variety of individual applications we cannot make any generally binding commitments regarding the compatibility. We recommend testing compatibility with the materials being used.