The F-OK B 400 is an instantaneous electromagnetic, on-off relay with 4 double-cutout changeover contacts in series. It is a high-performance, rugged relay, easy to assemble, particularly suitable for uses calling for a high level of safety and excellent cutout reliability for medium-sized loads. Rolling stock or static railway equipment, marine equipment, transport and electricity production are the principal sectors where the F-OK B is used. Hub: Hotman Sinaga Taman Nagoya F6/3; Puri Surya Jaya Gedangan-Sidoarjo Ph: 0318012002/60232299 Fax: 0318011890 Email: alvitama.sby@live.com