This DC/DC converter survives even Armageddon. Don´t you believe?

The TEQ 300WIR meets the demanding requirements for quality, reliability and safety for use in railway applications. The TRACO Power converters of this series contribute to the creation of simple and reliable solutions.
This is an archive article published 04/24/2018. Some information may no longer be up to date and in line with the current state. Please contact us in case of interest.

The TEQ 300WIR models have been approved according to safety standards IEC/UL 60950-1 and UL508. They also comply with EN50155 and EN61373, which are a condition for the use in railway applications.

Converters of this series have a very wide input voltage range between 18-75 and 43-160 VDC, the nominal input voltages of 48, 72, 96 and 110 VDC, which means ±40% deviation of nominal input voltage is allowed. This is a very important feature, which means that the converters can withstand brownouts (0.6 x Vnom x 100ms) and transient voltage (1.4 x Vnom x 1s) defined by EN50155 not only for a limited period but permanently.

The TEQ300WIR models are equipped with internal filters to conform to demanding electromagnetic interference requirements.

The requirements for electromagnetic field resistance, fast transient burst immunity and surge immunity correspond with the highest level for “railway rolling stock equipment” under performance criteria A (continuous operation within specified datasheet limits).

The converters are also designed and approved to endure shock and vibration requirements for rolling stock equipment according to EN 61373. Solid flanges allow an easy fixation on the mounting surface. The modules are equipped with vibration proof spring clamps for secure electrical connection.

With an excellent efficiency and highest grade components, they reliably operate in an environment temperature range of -40°C to +80°C. They pass cyclic damp heat and dry heat tests without developing any physical damages. In addition, the products are qualified for the fire behavior of components according to EN 45545-2.

The TEQ 300WIR models provide a reinforced I/O insulation for an isolation voltage of 3000 VAC (1 min test voltage). They are available with output voltages of 12, 15, 24, 28 and 48VDC, which are adjustable within the range of ±20%. The output characteristics is “constant voltage to constant current” (CV/CC), which means that the output voltage is stable up to a load current of about 110% of nominal current. At this point, the voltage will be decreased while the current stays stable.

This feature is useful to start motors, charge lead acid batteries or pull up capacitors of unlimited capacitance. Protection against overheating, overload, short circuit, reversed input, overvoltage and input under-voltage are other features that make these TRACO POWER converters very reliable and fail-safe.

Moreover, the TEQ300WIR series converters have the so-called "sense" line inputs that are used to compensate for voltage drops caused by long wires. They also have a load distribution function for parallel operation of up to three units or for a real redundant operation. 

All these characteristics allow for a simple but reliable design.

If you are interested in other TRACO Power products, or you need more information, please contact us at sales@soselectronic.com

Do not miss these articles

Do you like our articles? Do not miss any of them! You do not have to worry about anything, we will arrange delivery to you.

Related articles

Main products


TEQ 300-4812WIR TRACOPOWER  
TEQ 300-4812WIR

DC/DC Converter + Heatsink 300W 18-75V/12V 25A

Isolated DC/DC Converters

Ord. No.: 208693
Manufacturer: TRACOPOWER
51 pcs in 5-15 days
1 pcs+
5 pcs+
10 pcs+
20 pcs+
688,00 €
657,00 €
543,00 €
527,00 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

TEQ 300-4815WIR TRACOPOWER  
TEQ 300-4815WIR

DC/DC Converter + Heatsink 300W 18-75V/24V 12,5A

Isolated DC/DC Converters

Ord. No.: 208694
Manufacturer: TRACOPOWER
1 pcs+
5 pcs+
10 pcs+
20 pcs+
688,00 €
657,00 €
543,00 €
527,00 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

TEQ 300-4816WIR TRACOPOWER  
TEQ 300-4816WIR

DC/DC Converter + Heatsink 300W 18-75V/28V 11A

Isolated DC/DC Converters

Ord. No.: 208695
Manufacturer: TRACOPOWER
1 pcs+
5 pcs+
10 pcs+
20 pcs+
688,00 €
657,00 €
543,00 €
527,00 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

TEQ 300-4818WIR TRACOPOWER  
TEQ 300-4818WIR

DC/DC Converter + Heatsink 300W 18-75V/48V 6,5A

Isolated DC/DC Converters

Ord. No.: 208696
Manufacturer: TRACOPOWER
3 pcs in 5-15 days
1 pcs+
5 pcs+
10 pcs+
20 pcs+
688,00 €
657,00 €
543,00 €
527,00 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

TEQ 300-7212WIR TRACOPOWER  
TEQ 300-7212WIR

DC/DC Converter + Heatsink 300W 43-160V/12V 25A

Isolated DC/DC Converters

Ord. No.: 208697
Manufacturer: TRACOPOWER
9 pcs in 5-15 days
1 pcs+
5 pcs+
10 pcs+
20 pcs+
749,00 €
716,00 €
592,00 €
574,00 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

TEQ 300-7215WIR TRACOPOWER  
TEQ 300-7215WIR

DC/DC Converter + Heatsink 300W 43-160V/24V 12,5A

Isolated DC/DC Converters

Ord. No.: 208698
Manufacturer: TRACOPOWER
25 pcs in 5-15 days
1 pcs+
5 pcs+
10 pcs+
20 pcs+
749,00 €
716,00 €
592,00 €
574,00 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

TEQ 300-7216WIR TRACOPOWER  
TEQ 300-7216WIR

DC/DC Converter + Heatsink 300W 43-160V/28V 11A

Isolated DC/DC Converters

Ord. No.: 208699
Manufacturer: TRACOPOWER
23 pcs in 5-15 days
1 pcs+
5 pcs+
10 pcs+
20 pcs+
749,00 €
716,00 €
592,00 €
574,00 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

TEQ 300-7218WIR TRACOPOWER  
TEQ 300-7218WIR

DC/DC Converter + Heatsink 300W 43-160V/48V 6,5A

Isolated DC/DC Converters

Ord. No.: 208700
Manufacturer: TRACOPOWER
1 pcs+
5 pcs+
10 pcs+
20 pcs+
749,00 €
716,00 €
592,00 €
574,00 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare
Do you agree with cookies being stored?
Welcome to the SOS electronic website. Before you enter our online world, we would like to ask you to allow us to store cookies on your browser. Your consent will help us view the site without error, measure its performance, and track additional statistics. Apart from that, we can bring you an offer of our products and services, literally tailor-made. We also provide cookies to third parties. However, you are definitely safe with us.
The proper operation of the website
More stable technical control
Better marketing offer

More about cookies
More about personal data processing

Necessary Only selected Accept all cookies