The R-REF04-RIA12-1 board is populated with components rated for higher DC input voltages up to 110V DC nominal input. The second board, the R-REF04-RIA12-2 board is populated with components rated for higher DC input currents up to 10A. Both boards are input-side fused and can be used with DC/DC converters with single output currents up to 45A. 

The reference designs include a RIA12-conform surge stopper capable of blocking surge voltages up to 385V DC. The universal pinout accommodates DC/DC converters with 50 x 25mm (2.0 x 1.0-inch) quarter brick or half brick standard case dimensions including the company’s entire portfolio of railway DC/DC converters up to 240W. The reference designs, samples of DC/DC converters and are directly from the company or from authorised distributors.