Block Open Frame 3.5 kVA Auto-Transformer 690 V ac Primary 400 V ac Secondary AT3 3,5-69-4

Block AT3 3,5-69-4 Open Frame Auto-Transformer is designed for electrical distribution and power regulation applications. Featuring a 3.5 kVA power capacity, it supports a primary voltage of 690 V ac and a secondary voltage of 400 V ac. This transformer is built with an open frame construction that facilitates efficient heat dissipation and ease of installation in various industrial settings.

The transformer can be mounted in multiple ways including floor standing, chassis, and wall mounting, making it versatile in installation across different environments. It features screw-type termination to ensure strong and secure electrical connections. It is engineered to operate reliably within frequencies from 50 Hz to 60 Hz and withstands maximum operating temperatures up to 40°C.

Compact in size with dimensions of 267 mm length, 125 mm width, and 215 mm depth, this model weighs approximately 15 kg. It adheres to stringent international standards including VDE 0570 part 2-13, IEC 61558-2-13, DIN EN 61558-2-13, CSA 22.2, C-UL-US, UL 506, and VDE 0532, underscoring its quality and safety compliance. The transformer benefits from BLOCKIMPEX vacuum impregnation and is tested to EN 61558-2-13 ensuring longevity and consistent performance.

This auto-transformer is ideal for industrial, manufacturing, HVAC, power supply distribution, and laboratory applications where voltage regulation and power efficiency are critical. Its durable construction, multiple mounting options, and adherence to global standards ensure reliable operation in demanding environments.

High efficiency low heat loss design ensures reliable performance. Open frame construction allows easy mounting and installation. Suitable for floor standing, chassis, and wall mounting configurations. Screw termination provides secure and easy electrical connections.

Operates effectively within 50 Hz to 60 Hz frequency range. Maximum operating temperature of 40°C for stable operation. Compact size with length 267 mm, width 125 mm, and depth 215 mm. Robust weight of 15 kg providing durability.

Conforms to standards VDE 0570 part 2-13, IEC 61558-2-13, DIN EN 61558-2-13, CSA 22.2, C-UL-US, UL 506, and VDE 0532. Explore more industrial transformers and Auto-Transformers on EnvMart for advanced power management solutions.