{{ variable.name }} : {{ variable.values[selectedVariantsIndex[variable_index]].name }}
Our low-frequency transformers are core devices for voltage conversion, safety isolation, and stable power supply in industrial-frequency AC (50/60Hz) systems. Known for their rugged durability, high reliability, and excellent overload capacity, they serve as indispensable "power foundations" in power distribution, industrial control systems, and traditional electrical equipment, providing safe, stable, and efficient energy solutions for a wide range of applications.
Product Description
Compliant with UL5085-3 certification, multi-voltage compatible input (120/208/240/480V, etc.), 24V output, 20VA-75VA transformers, primarily Class 2 safety-isolated types, ideally suited for North American HVAC control systems, low-voltage lighting, industrial relay drive, and similar applications. The following is a list of verified models and technical parameters organized by power rating:
▶ 1. 20VA model (for micro control circuits) UL5085-3 certification (file number E331579), insulation class 130°C, open structure EI-57X16
▶ II. 40VA Model (Main medium-sized control module) UL5085-3 certification (File No. E331579), insulation class 130°C, open structure EI-66X22
3. 40VA model (main medium control module) UL5085-3 certification (file number E331579), insulation class 130°C, open frame construction EI-57X26,
▶ 4. 40VA model (mainstay of medium control modules) UL5085-3 certification (file number E331579), insulation class 155°C, open structure EI-57X26, EI-57X32
▶ V. 60VA Model (Industrial Power Assist) UL5085-3 Certified (File No. E331579), Insulation Class 130°C, Open Construction EI-76X26, Integrated Overcurrent Protection, Suitable for Medium Power Loads:
▶ VI. 75VA model (high load control circuit) UL5085-3 certified (File No. E331579), insulation class 130°C, open construction EI-76X26, integrated current overload protection, suitable for high-power relays and motor control.
▶ 7. 70-75VA model (high-load control circuit) UL5085-3 certification (file number E331579), insulation class 155°C, open construction EI-76X26, integrated current overload protection, suitable for high-power relays and motor control
Product Advantages
▶ Robust and durable, with an exceptionally long lifespan: Based on mature design and heavy-duty materials, the structure is sturdy with strong resistance to overload and surge currents. The design life can exceed 30 years, with extremely low maintenance costs.
▶ High efficiency and energy saving, economical operation: The use of high-quality silicon steel sheets and copper materials significantly reduces no-load loss and load loss, achieving high operational efficiency and saving considerable electricity costs over long-term use.
▶ Safe isolation, stable and reliable: Provides reliable electrical isolation, effectively isolating primary and secondary circuits, protecting personnel and equipment from electric shock hazards, suppressing grid-side interference, and outputting a stable and pure power supply.
▶ Strong environmental adaptability: Fully enclosed design can handle harsh industrial environments such as dust, moisture, and corrosive gases, with stable performance and no need for frequent maintenance.
▶ Excellent Electromagnetic Compatibility (EMC): As an inductive component, it inherently suppresses high-frequency interference, does not generate high-frequency harmonic pollution, and meets strict industrial EMC requirements.
Application Scenarios
Our low-frequency transformers are the power core in the following traditional and modern industrial fields:
▶ Power Distribution System: Step-down distribution transformers in distribution rooms of factories, buildings, and communities convert medium voltage to low voltage for use by equipment.
▶ Industrial Control Systems: Provide safe isolated control power for PLCs, sensors, control circuits, and lighting systems (e.g., 380V to 220V/110V/24V conversion).
▶ Traditional mechanical equipment: power and control power supplies for machine tools, lifting equipment, production lines, welding equipment, pumps, fans, and other equipment.
▶ Infrastructure: Supporting power supply for building infrastructure such as elevators, central air conditioning, water supply and drainage systems, etc.
▶ Testing and experimental equipment: As a voltage regulator or isolation transformer, used in product development, aging testing, maintenance and debugging, etc.
▶ New energy supporting: Station transformers for photovoltaic and wind power stations, providing low-voltage auxiliary power for the station's own operation.
