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Block Open Frame 25 kVA Auto-Transformer, 380 V 415 V AC Primary, 400 V AC Secondary, Floor Standing Wall AT3 25-38/42-4
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | Block |
| Length | 267mm |
| Model | AT3 25-38/42-4 |
| Depth | 220mm |
| Gross Weight | 15kg |
| Width | 145mm |
| Mount Type | Floor Standing, Wall, Chassis |
| Construction | Open Frame |
| Series | AT3 25-38/42-4 |
| Termination Type | Screw |
| Maximum Operating Temperature | 40°C |
| Pay online using | Or choose to pay later via bank transfer |
| Primary Voltage | 380 V, 415 V ac |
| Secondary Voltage | 400 V ac |
| Minimum Operating Frequency | 50Hz |
| Maximum Operating Frequency | 60Hz |
Key Features
- High efficiency, low heat loss 3-phase autotransformer.
- Open frame construction with screw terminal connections for easy wiring.
- Mount options include floor standing, wall, and chassis mounting.
- Operates at 50 to 60 Hz with a maximum operating temperature of 40°C.
- Compact dimensions of 267mm length, 145mm width, and 220mm depth.
- Weighs approximately 15 kg for robust industrial use.
- Common input and output windings simplify connection and reverse operation is possible.
- Tested and certified to multiple international standards including UL 506 and IEC 61558-2-13.
Product Description
Block AT3 25-38/42-4 is a high-performance open frame auto-transformer with a primary voltage of 380 V and 415 V AC and a secondary voltage of 400 V AC, delivering 25 kVA power capacity.
This series features a compact design with dimensions of 267mm length, 145mm width, and 220mm depth, making it suitable for floor standing, wall, or chassis mounting to fit various installation requirements.
The transformer operates efficiently at frequencies between 50 Hz and 60 Hz and is designed to handle maximum operating temperatures up to 40°C, making it reliable in diverse industrial environments.
Equipped with screw terminal connections, it ensures easy wiring and installation. The common input and output windings allow for simple setup, and reverse operation is possible to adapt for various applications.
Constructed to meet stringent international standards such as UL 506, VDE 0570 part 2-13, IEC 61558-2-13, DIN EN 61558-2-13, C-UL-US, and CSA 22.2, this transformer ensures safety and compliance for industrial, commercial, and laboratory power regulation tasks.
Manufactured in Germany with BLOCKIMPEX vacuum impregnation technology, it offers low heat loss and high efficiency, contributing to reduced energy consumption and extended operational life.
High efficiency, low heat loss 3-phase autotransformer. Open frame construction with screw terminal connections for easy wiring. Mount options include floor standing, wall, and chassis mounting. Operates at 50 to 60 Hz frequency range.
Maximum operating temperature of 40°C. Compact overall dimensions of 267 mm length, 145 mm width, 220 mm depth. Weight approximately 15 kg for sturdy industrial use. Complies with UL 506, VDE, IEC, DIN, C-UL-US, and CSA standards.
Manufactured in Germany with vacuum impregnation for durability.
This Auto-Transformer is ideal for applications in industrial machinery, commercial power systems, electrical labs, HVAC systems, and manufacturing plants where voltage regulation and efficient power transformation are essential.
Explore more from Block’s range of transformers and electrical components at EnvMart for high quality, reliable, and professionally certified products.
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Frequently Asked Questions
This model has a power capacity of 25 kVA.
It operates with a primary voltage of 380 V and 415 V AC, and a secondary voltage of 400 V AC.
The transformer has a length of 267 mm, a width of 145 mm, and a depth of 220 mm.
The maximum operating temperature is 40°C.
This unit can be mounted in three ways: floor standing, wall, or chassis mounting.
It operates efficiently within a frequency range of 50 to 60 Hz.
It features an open frame construction with screw terminal connections for easy wiring.
The gross weight of this model is approximately 15 kg.
Yes, reverse operation is possible, allowing for flexible setup in various applications.
It is tested and certified to multiple international standards including UL 506, IEC 61558-2-13, and others.
This model is manufactured in Germany using BLOCKIMPEX vacuum impregnation technology.
It is suitable for applications in industrial machinery, commercial power systems, electrical labs, HVAC systems, and manufacturing plants.
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