秩父線
The fleet of four-car trains is primarily used on all-stations driver only operation "Local" services on the Seibu Chichibu Line between and , but the trains are also used as eight-car formations on through "Rapid Express" train services from on the Seibu Ikebukuro Line to and on the Chichibu Main Line. These trains divide and couple at , with separate portions for Mitsumineguchi and Nagatoro.