Low-frequency transformer

Brief description:

The reliable cornerstone of power transmission: industrial grade low-frequency transformers

Our low-frequency transformer is the core equipment for voltage conversion, safe isolation, and stable power supply in power frequency AC (50/60Hz) systems. With its durability, high reliability, and excellent overload capacity, it has become an indispensable “power cornerstone” in power distribution, industrial control systems, and traditional electrical equipment, providing safe, stable, and efficient energy solutions for various applications.

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Details description

☷ Product Description

A 20VA-75VA transformer that complies with UL5085-3 certification, is compatible with multiple voltages such as 120/208/240/480V input, and outputs 24V. It is mainly of Class 2 safety isolation type and is core compatible with North American HVAC control systems, low-voltage lighting, industrial relay drives, and other scenarios. The verified models and technical parameters are summarized by power level as follows: 1、 20VA model (specialized for micro control circuits) UL5085-3 certification (file number E331579), insulation level 130 ℃, open structure EI-57X16

Model

Primary

Secondary

Frequency, Hz

Volt, V ac

Volt, V ac

Power, VA

T240-021Bydzzz

50/60

120

24

20

T240-071Bydzzz

50/60

240

24

20

T240-241Bydzzz

50/60

120/240

24

20

T240-271Bydzzz

50/60

208/240

24

20

T240-131Bydzzz

50/60

460

24

20

T240-151Bydzzz

50/60

575

24

20

T240-2K1Bydzzz

50/60

460/575

24

20

T240-2B1Bydzzz

50/60

230/460

24

20

  2、 40VA model (main medium-sized control module) UL5085-3 certification (file number E331579), insulation level 130 ℃, open structure EI-66X22

Model

Primary

Secondary

Frequency, Hz

Volt, V ac

Volt, V ac

Power, VA

T240-021Dydzzz

50/60

120

24

40

T240-071Dydzzz

50/60

240

24

40

T240-241Dydzzz

50/60

120/240

24

40

T240-271Dydzzz

50/60

208/240

24

40

T240-131Dydzzz

50/60

460

24

40

T240-151Dydzzz

50/60

575

24

40

T240-2K1Dydzzz

50/60

460/575

24

40

T240-2B1Dydzzz

50/60

230/460

24

40

 3、 40VA model (main medium-sized control module) UL5085-3 certification (file number E331579), insulation level 130 ℃, open structure EI-57X26,

Model

Primary

Secondary

Frequency, Hz

Volt, V ac

Volt, V ac

Power, VA

T240-021Qydzzz

50/60

120

24

40

T240-071Qydzzz

50/60

240

40

T240-271Qydzzz

50/60

208/240

40

T240-241Qydzzz

50/60

120/240

24

40

 4、 40VA model (main medium-sized control module) UL5085-3 certification (file number E331579), insulation level 155 ℃, open structure EI-57X26, EI-57X32

Model

Primary

Secondary

Frequency, Hz

Volt, V ac

Volt, V ac

Power, VA

T240-021Pydzzz

60

120

24

40

T240-271Pydzzz

60

208/240

24

40

T240-071Pydzzz

60

240

24

40

T240-051Pydzzz

50/60

220

24

40

  5、 60VA model (industrial grade power assist) UL5085-3 certification (file number E331579), insulation level 130 ℃, open structure EI-76X26, integrated current overload protection, suitable for medium power loads:

Model

Primary

Secondary

Frequency, Hz

Volt, V ac

Volt, V ac

Power, VA

T24a-021Fydzzz

50/60

120

24

60

T24a-071Fydzzz

50/60

240

24

60

T24a-241Fydzzz

50/60

120/240

24

60

T24a-271Fydzzz

50/60

208/240

24

60

T24a-2E1Fydzzz

50/60

240/480

24

60

T24a-321Fydzzz

50/60

120/208/240

24

60

T24a-361Fydzzz

50/60

208/240/480

24

60

T24a-421Fydzzz

50/60

120/208/240/480

24

60

 6、 75VA model (high load control circuit) UL5085-3 certification (file number E331579), insulation level 130 ℃, open structure EI-76X26, integrated current overload protection, suitable for high-power relays and motor control:

Model

Primary

Secondary

Frequency, Hz

Volt, V ac

Volt, V ac

Power, VA

T24a-021Gydzzz

50/60

120

24

75

T24a-071Gydzzz

50/60

240

24

75

T24a-241Gydzzz

50/60

120/240

24

75

T24a-271Gydzzz

50/60

208/240

24

75

T24a-2E1Gydzzz

50/60

240/480

24

75

T24a-321Gydzzz

50/60

120/208/240

24

75

T24a-361Gydzzz

50/60

208/240/480

24

75

  7、 70-75VA model (high load control circuit) UL5085-3 certification (file number E331579), insulation level 155 ℃, open structure EI-76X26, integrated current overload protection, suitable for high-power relays and motor control

Model

Primary

Secondary

Frequency, Hz

Volt, V ac

Volt, V ac

Power, VA

T242-021Gydzzz

60

120

24

75

T242-271Gydzzz

60

208/240

24

75

T242-101Gydzzz

60

400

24

75

T242-141Gydzzz

60

480

24

7

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