FH class C12

The FH class C12 is a class of single-deck electric multiple units currently operating on the Metro Cercadas commuter rail network. The C12 was built by a consortium of and  between 2015 and 2018 for lines R and S. It mainly supplements the class C03 to provide additional capacity on line S and line R during special events.

The class C12 is the first single-deck order for the Metro to be built in four-car consists, in line with existing standards for double-deck rolling stock. They are also the first to feature full-color LED destination signs.

Design
The C12 trainsets are formed in single-deck four-car consists with two plug doors on each side. The middle two cars are non-control motor cars while the non-powered driving trailers are located at each end. The traction system for the C12 was supplied by, who provided Siemens SiTRAC IGBT-VVVF inverters.

The class C12 bears the orange-yellow Metro Cercadas livery introduced by Transport for Cercadas (TPC) and feature 2-2 reversible transverse seating. The carbody of the C12 sets share commonality with Hyundai Rotem’s previous rapid transit orders for the and, due to specifications set by the TPC.

The C12 sets are numbered 12 001 to 12 035.

History
After the introduction of the preceding class C03, Transport for Cercadas began to realise that the existing order for 33 single-deck trains for line S was inadequate with increasing ridership around the north-west suburbs of Cercadas. Although the FH was already in the process of converting the C80-A sets for suburban use on line S, this would still not meet ridership demands in the long run.

In December 2012, the TPC awarded a contract for an additional 35 single-deck trains to and. All C12 sets were assembled in Hyundai Rotem’s factory in, with traction and braking systems sourced from Siemens.

The first two C12 trainsets arrived at the Port of Turiz in March 2015 and extensive testing began the following month. The C12s entered revenue service on June 3, 2015 initially on line S and later on limited special event services on line R.