9T51B0408

The 9T51B0408 is a small, single-phase, dry-type, buck boost autotransformer.

The enclosure type is NEMA 3R.

Yes, it complies with NEC Article 450, except when field connected as an autotransformer.

The coils in this transformer are made of copper (CU).

The temperature rise rating is 150 degrees Celsius.

The insulation system class is IS-180.

The most common use is to buck (lower) or boost (raise) the supply voltage a small amount, usually 10%.

The frequency rating for this transformer is 60 Hz.

The frame size of this transformer is 1.

The ambient temperature rating is 40 degrees Celsius.

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