Block Open Frame 10 kVA Auto-Transformer 440 V, 460 V ac Primary, 400 V ac Secondary AT3 10-44/46-4

Block AT3 10-44/46-4 Auto-Transformer 10 kVA is a high efficiency, low heat loss 3-phase transformer engineered for commercial and industrial power applications. Featuring an open frame design, it allows easy integration with various mounting options including wall, floor standing, and chassis installations. Its robust screw terminal connections enable safe and reliable electrical interface.

This autotransformer offers primary voltages of 440 V and 460 V alternating current, with a stable secondary voltage output of 400 V alternating current. It operates within a frequency range of 50-60 Hz and can withstand ambient temperatures up to 40°C, thus providing dependable service in diverse environmental conditions.

With compact dimensions of 267 mm in length, 125 mm width, and 215 mm depth, this unit facilitates straightforward installation in equipment racks or enclosures. The manageable weight of 14.4 kg enables practical handling and positioning during maintenance or setup.

Designed and manufactured in Germany, the AT3 series transformers incorporate quality vacuum impregnation techniques by BLOCKIMPEX, enhancing durability and electrical insulation. This model is tested and certified to rigorous international standards including CSA 22.2, IEC 61558-2-13, UL 506, and VDE standards, assuring compliance and safety.

High efficiency, low heat loss 3-phase autotransformer. Supports multiple mounting styles: wall, floor standing, and chassis. Wide primary voltage compatibility at 440 V and 460 V ac. Reliable screw termination electrical connections.

Designed for steady performance between 50 - 60 Hz frequency. Robust construction tested for 40°C maximum operating temperature. Compact size facilitates versatile installation options. Certified to meet international safety and performance standards.

Manufactured in Germany ensuring quality and durability. Vacuum impregnation for enhanced electrical insulation.

This Block AT3 10-44/46-4 Auto-Transformer is ideal for industrial, commercial, and manufacturing electrical power distribution systems, voltage conversion, and load balancing applications. Its open frame and screw terminal design make it an excellent choice for integration into switchgear, control panels, and power supply equipment.

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