KaRaTec manufactures railway DC DC converters by the qualified engineers. These converters are certified; not only this, it is fully enclosed and encapsulated with additional circuits to protect noise, and protect from shock, vibration, humidity, dust and water. The designs and features enable the converter to work in the extreme environments. Moreover, this converter can swing to one level of temperature to another level. The temperature varies from -40 degrees centigrade to 85 degrees centigrade. They manufacture the converter to keep in mind the Australian standard. To know more about their reliable products and efficient services you can check their site.