With the conversion of the Rijeka - Zagreb railway from 3KV DC electrical system to the 25 KV AC catenary, these locomotives were retired in 2012.

The steam and diesel locomotives at that time could not fulfil the request, as they could not generate sufficient power.

The locomotives are split in two series: The locomotives were originally colored in a yellow and pine green colour scheme, which caused it to earn the nickname "žutka" ("yellow") amongst Croatian engineers; the Slovenian engineers instead adopted the nickname "meh" ("bellows") due to the articulated design resembling fire-blowing bellows.

A couple of the locomotives were sold to other countries, one was acquired by the Slovenian Railway Museum, and the rest were scrapped.

On 2nd series compressors and battery recharge systems are identical, but fans are 3 kW (4.0 hp) "Aeroto" type and are activated by alternators, providing a 380 V AC three-phase voltage.