Electric motors from a specialist contractor
JS-Technik GmbH is one of the leading suppliers on the electric motors online market in Germany. Our focus is
on three-phase motors, frequency inverters and geared motors. You can also visit us via our
Size, power, speed and voltage of AC motors
On these pages, you will find a selection of electric motors of the size 63 - 355 with a power of 0.12 kW, 0.25 kW,
0.37 kW, 0.55 kW, 0.75 kW, 1.1 kW, 1.5 kW, 2.2 kW, 3,0 kW, 4 kW, 5.5 kW, 7.5 kW, 11 kW, 15 kW, 22 kW, 30 kW,
45 kW, 55 kW, 75 kW, 90 kW, 110 kW, 132 kW, 160 kW, 200 kW, 250 kW, 315 kW, 355 kW, 400 kW, 450 kW, 500 kW.
A side from these sizes, medium-voltage motors are also available. JS motors are supplied in various speeds, i.e.
motors with pole numbers of 2, 4, 6, 8 or 10, and international line voltages and frequencies, i.e. 230V/400V 50Hz
or 265V/460V 60Hz and 400V/690V 50Hz or 460V/795V 60Hz.
Motor power expressed in kW or HP
The conversion factor between kW and HP is 0.73549875. That means, 1 HP equals 0.73549875 kW and 1 kW is
equal to 1.359621617 HP.
Repair of AC motors
If an electric motor is defective and needs repairing, please do not hesitate to contact us. We have the required
equipment and professionals having the expertise and long-year experience to do the job. But in many cases
a replacement with a new motor is more cost-effective than renewing the winding. We therefore recommend
you to purchase a replacement motor from our large stock of motors and gearboxes. For you, this repair
service offered is simple, fast and cost-effective.
IE3 / IE4 AC motors
You can also purchase premium-quality IE3 / IE4 energy-saving motors. The most important efficiency
classes are IE1, IE2 IE3 and IE4. The legal requirements of minimum efficiency are as follows:
- since 16 June 2011, the minimum efficiency of motors (0.75 kW - 375 kW) must be in compliance
with the efficiency IE2;
- since 1 January 2015, the minimum efficiency of motors (7.5 kW - 375 kW) must be in compliance
with the efficiency IE2, or the motors must be operated as IE3 with frequency inverter;
- since 1 January 2017, the minimum efficiency of motors (0.75 kW - 375 kW must be in compliance
with the efficiency IE2, or the motors must be operated as IE3 with frequency inverter.
Legal requirements and information about this can be found on the pages of the ZVEI
(German umbrella organisation of the electrical and electronic industry).
Three-phase motors with a variable number of poles
In addition to standard motors, also motors with a variable number of poles are offered. Our motors ex stock
are available with two speeds, with a constant torque, in delta connection / double Y connection, at a rated
voltage of 400 V, 50 Hz. Moreover, they come in various designs i.e. in sizes of 71, 80, 90, 100, 112 and 132
and in different construction types such as B3, B5, B35, B14, B34, V1 and V6. Altering the speed of the
motors is effected by varying the number of poles i.e. 2/4 (3000/1500 rpm), 4/8 (1500/750 rpm),
4/6 (1500/750 rpm), 6/8 (1000/750 rpm) and 2/8 (3000/750 rpm). Motor powers range from
0.08 kW to 5.5 kW. Higher powers, motors with three speeds, with a torque square
function or Dahlander motors are available on request.
Modified electric motors
In many cases, standard motors are needed to be designed to match customer's individual requirements.
With our qualified personnel, our large stock of motors and our own final assembly, we are a perfect
partner for businesses that need external expertise in a large spectrum of issues – whether it is
a specific brake motor, circular saw motor, electric motor with frequency inverter, special shaft,
special motor flange, modified terminal box, extended fan hood, motors without fan, in 290/500V,
progressive construction type, special motor winding or an electric motor with a predefined
degree of protection such as IP54, IP55, IP56 or IP65.
Electric motor service
In case you do not find your IEC standard motor here in our JS online shop, please do not hesitate to send us
your request via email, or simply give us a phone call. If you are a specialised company, please contact us and we
will send you our price lists. To complete this section, we would like to point at our large stock of geared
motors & three-phase motors. This allows us to ensure particularly short delivery times.
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