Company Overview

We will always try to close to customer and walk together.

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SSIS, the leader in circuit breaker components

SSIS was established on December 1, 1985. As a component manufacturer of electric power equipment, we have been cooperating with global leading companies such as LSIS, Hyundai Heavy Industries, ILJIN Electric, Seondo Electric as a partner and producing main parts of electric circuit switches, protection and connection equipment, which are Mecha Ass'y. Terminal Ass'y. Moving Fixed. Conductor Ass'y and GIS Mechanism Ass'y.

Company and We All
Standing Together

Dedicate to Production &
Contribute to Customer Satisfaction

Company Name SSIS Co., Ltd.
CEO Seongwon Woo
Address [Ochang Factory (Head Office)]

6-1, Ochanggajwa 4gil, Ochang-eup, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do
TEL)043-214-7767 FAX)043-214-7769

[Incheon Factory]

Lot# 4, 146 block, 715-3, Gojan-dong, Namdong-gu, Incheon
TEL)032-811-0526~8 FAX)032-812-0859

Founded December 1, 1985
Assets and Sales
  • Total assets 15 billion won at the end of year 2011 (including 6billion won from Incheon branch office)
  • Annual sales: 25 billion won
Employees [Ochang Factory (Headquarter)]


[Incheon Factory]


Main Business Manufacturing and assembling electric equipment parts
Main Products
  • vacuum circuit breaker (VCB) parts
  • air circuit breaker (ACB) parts
  • Switch (SF6GAS) parts
  • GIS controller MECHANISM ASS'Y
Major Clients
  • LSIS (former LG Industrial Electric)
  • Hyundai Heavy Industries
  • LJIN Electric
  • Seondo Electric
  • HITACHI (SHOWA Electric)