4G — LV cam switches 4G10–4G100
Country: Poland · Model: 4G
4G cam switches with manual operation are made in seven sizes, from 4G10 to 4G100, that is, for rated currents of 10–100 A. They are installed in control cabinets and desks, transformer substations, cast-iron and sheet-steel switchgear and welding machines, where a motor, a circuit or a step is switched by hand.
- Range
- 4G10, 4G16, 4G25, 4G40, 4G63, 4G80, 4G100
- Purpose
- main and auxiliary circuits: motor starting, star–delta, reversing, speed changing, steps, measurement
- Operation
- manual
- Configuration
- any switching program (online configurator)
Technical specifications
| Range | 4G10, 4G16, 4G25, 4G40, 4G63, 4G80, 4G100 |
|---|---|
| Purpose | main and auxiliary circuits: motor starting, star–delta, reversing, speed changing, steps, measurement |
| Operation | manual |
| Configuration | any switching program (online configurator) |
| Applications | industry, mining, shipbuilding, transformer substations, welding machines |
| Features | small dimensions, high switching and mechanical endurance, withstand the dynamic effect of short-circuit currents (with fuses) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The main parts and assemblies are standardized and made in series, so a switch is assembled for any switching program without a long wait. The contact development for a specific circuit can be drawn up in the manufacturer's online configurator. In main circuits the device works as a motor switch for single- and three-phase motors, a star–delta switch, a direction or speed switch, and also as a disconnector switch. In auxiliary circuits it switches control, signalling and measurement according to a set program. Other versions serve as tap changers of transformers and welding machines, group switches of resistors and heating elements, or a push-button with spring return to the initial position. With small dimensions the switches have a high breaking capacity and high switching and mechanical endurance. The series meets the requirements for LV equipment in industry, mining and shipbuilding.
How to choose
The number after 4G means the rated current in amperes, so the 4G25 is rated for 25 A and the 4G63 for 63 A. The size is taken by the load current, and the switching program is defined by the number of positions and the contact closing scheme. For the incoming device of a switchboard at hundreds of amperes, the rotary disconnector switch RA at 100–1 250 A is more suitable.
Request a price and lead time
4G — LV cam switches 4G10–4G100. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What does the number in the designation of the 4G cam switch mean?
The rated current in amperes. For example, the 4G16 is rated for 16 A, the 4G40 for 40 A, and the largest in the range, the 4G100, for 100 A.
Can a 4G switch be assembled for a star–delta circuit or motor reversing?
Yes, these are standard applications of the series, together with speed changing. The switching program is set for the circuit or selected in the online configurator.
What are the working voltage and utilization category of the 4G80 switch?
For the 4G80 the source data gives only the rated current of 80 A. Voltages and utilization categories for each size, standard switching programs and mounting dimensions are given in the catalogue "Aparatura łączeniowa"; use it to check the mains voltage and the nature of the load.
Does the 4G cam switch withstand a short-circuit current?
With fuse protection the switches withstand the dynamic effect of short-circuit currents and short-time overloads. Therefore a fuse is placed in the circuit before the switch.
Is there a declaration of conformity for the 4G switches?
Yes, a separate declaration of conformity is issued for each size from 4G10 to 4G100.
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