The Square D 0.15KVA transformer is a reliable industrial component designed for primary power conversion in various applications. This transformer operates at 50/60Hz and is rated for 415V, making it suitable for three-phase systems. Originally known as the Bum Han BH3B-D2221, it has been rebranded under the Square D 9070T150D33 model, offering a warranty that ensures its quality and performance. Additionally, it is also referred to as the Square D 9070T150D33 Control Transformer, which is commonly used in control circuits. The transformer is also identified by the model 9070T150D1, further confirming its versatility and widespread use in industrial settings. Its primary function is to step down voltage from 220V to a lower level, ensuring safe and efficient power distribution. This transformer is a key component in various industrial applications, providing reliable power conversion and control in environments where precise voltage regulation is essential.