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Autotransformer to control the rotational speed of voltage controllable motors

Autotransformer 400 VAC | 2,5 A


Product description

This is a compact 400 V autotransformer. The maximum current is 2,5 A. The robust mounting brackets simplify switchboard mounting. It is resin encapsulated to minimise the noise and to protect it against corrosion. The input voltage is 400 VAC. It can be connected via the screw terminal block. There are 7 voltage taps available: 0-130-170-220-260-300-400 VAC.


Article code ATR-4-25L50
GTIN 5401003000182
Category 400 VAC Autotransformers
Available
Current stock 4 U.
Factory lead time 4 Week(s)
Documents

Additional specifications and description


What is an autotransformer?
An autotransformer is an electrical transformer with only one winding. It has a single winding with two end terminals and one or more terminals at intermediate tap points. The primary voltage (400 VAC) is applied to the end terminals. The secondary voltage is taken from two terminals, one terminal of which is usually in common with a primary voltage terminal.

Typical applications
Autotransformers are integrated in Sentera transformer fan speed controllers. Via two 400 V autotransformers, 3-phase AC fans are controlled in steps by reducing the motor voltage. Autotranformers can also be used in other applications that require a voltage reduction.

Superb quality
Sentera has its own production line for autotransformers. We only use the best quality raw materials and we work together with reliable suppliers. To minimise the typical humming noise of transformers, we apply a special impregnated coating. All this guarantees autotransformers of unrivalled quality.

Easy to install
This autotransformer can be installed in an electric cabinet. It can be connected via the terminal block with screws. It has an IP20 protection against ingress of dust.