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Union Switch & Signal (commonly referred to as US&S) was an American company based in Pittsburgh, Pennsylvania, which focused on railway signaling equipment, systems and services. The company was acquired by Ansaldo STS (from 2015, Hitachi Rail STS ) in 1988, [ 1 ] operating as a wholly-owned company until January 2009, when US&S was renamed ...
EMS-1 (The ITEC Electronic Modular Switch is an electronic direct control switching system. The modules are combined to form a complete switch or any of the modules can be added to your present Step-by-Step Systems.) EMS-2 (The EMS-2 RURAL SWITCH is a stored program control analog switch designed to be cost-effective in small exchanges.
Holtec International is a supplier of equipment and systems for the energy industry. [1] [2] Founded in Mount Laurel, New Jersey in 1986, Holtec International is a privately-held technology company with domestic operation centers in New Jersey, Florida, Ohio and Pennsylvania and worldwide in Brazil, India Japan, Mexico, Poland, South Africa, Spain, U.K. and Ukraine. [3]
In July 2020, ABB divested its power grid business and sold 80.1% of that to Hitachi Ltd., leading to the formation of Hitachi ABB Power Grids. [1] In October 2021, Hitachi ABB Power Grids changed its company name to Hitachi Energy. In December 2022, it was confirmed that Hitachi acquired the remaining 19.9 percent shares from ABB Ltd. [2]
A total of 1,502 S-2s were built from August 1940 to June 1950; 797 S-4s were built from June 1949 to August 1957. The S-4 was first produced in Canada, with ALCO production beginning in June 1949. The S-2 and S-4 were designed as rail yard switchers, meant to replace older, less efficient, and more demanding steam switchers.
The company was founded as "Ansaldo STS" in 2006 through the merger of Ansaldo Trasporti Sistemi Ferroviari and Ansaldo Signal. [8] [9] It began trading on the Milan Stock exchange, with 60% of its shares publicly held and 40% owned by Finmeccanica S.p.A. [10] Both companies had their roots in the Ansaldo engineering conglomerate which was gradually absorbed by Finmeccanica.