80th anniversary of founding.
TOACK design and manufacture power supplies for your system.


Toack develops and manufactures power supply equipment for electronic equipment installed in rail cars. We are widely used for safety and signaling equipment, brake receiver, train information control device, air conditioning control device, drive control device and so on. We also develop embedded systems such as data loggers that detect abnormal vibration and accumulate body sway data, and we will deliver safety and security to customers over the long term.

Our Technology and Facility

Our Technology
Electronic devices installed in a railway vehicle are exposed to a hot and humid environment in addition to a wide range of temperature and sharp temperature changes, and also subject to vibrations, impacts, surge noises, etc. during the vehicle is moving.
For the delivery of safety and security even under such harsh environment, our company’s power supply units for railway vehicles have been developed and manufactured based on its field data and know-hows accumulated over a number of years.
Besides, our company is able to implement all by itself an evaluation test under such environment and a test in accordance with IEC/JIS.
Our Facility
We have several production lines from one-by-one production lines to automated production lines equipped with SMD packaging machines and are capable of using both conventional lead soldering techniques and lead-free soldering techniques.
Such operations are conducted in accordance with our own quality control standards.
Further, we have a testing and measuring facility where reliability evaluations can be made under a reproduced field environment.
Automated Mounting Machine
Automatically implementing through-hole parts
Composite Type Vibration Test
Conducting a composite environmental test with the combination of temperature change and vibration and impact
Large-sized Thermostatic Chamber
Conducting temperature tests within the range from negative 20°C to 70°C

Company Profile

Company Name TOACK Corporation

Main Office
3F OS Building, Sotokanda 3-6-4, Chiyoda-ku, Tokyo,101-0021
TEL : +81-3-3526-9345 (Main)

Serizawa 920-67, Namegata-shi, Ibaraki 311-3501
TEL : +81-299-55-3200 (Main)

Foundation March 6, 1940 (Showa 15th)
Capital Thirty million (30,000,000) Japanese Yen
Representative Shuji Kusayanagi, Representative Director
Number of Employees 82 people (as of July 2016)
Financing Banks Omori Branch, Mizuho Bank, Ltd.
Omori Branch, The Shoko Chukin Bank, Ltd.
Kamata Branch, The Awa Bank, Ltd.
Akihabara Branch, The Bank of Mitsubishi UFJ, Ltd.
Omori Branch, Japan Finance Corporation
Kasuga-cho Branch, The Tokyo Tomin Bank, Limited
Kanda Branch, Resona Bank, Limited
Business Contents Manufacturing and sales of built-in type stabilized power supply units and built-in type computerized devices across industries including for railway vehicles, communication industry, disaster prevention & crime prevention devices and power units
Member Association Member of Japan Association of Rolling Stock Industries
Member of Japan Railway Rolling Stock & Machinery Association
Member of Japan Railway Engineers' Association
Member of Japan Railway Electrical Engineering Association
Principal Customers

Hitachi, Ltd.
Mitsubishi Electric Corporation
Fuji Electric Systems Co.,Ltd
Kawasaki Heavy Industries, Ltd.
Nippon Sharyo, Ltd.
The Kinki Sharyo Co.,Ltd.
Mitsubishi Heavy Industries, Ltd.
Hitachi Kokusai Electric Inc.
Yawata Electric Industrial Co.,LTD.
Nabtesco Corporation
Nippon Signal Co., Ltd.
Kyosan Electric Mfg. Co., LTD.
Daido Signal Co., Ltd.
Sumitomo Electric System Solutions Co., Ltd.
Toshiba Mitsubishi-Electric Industrial Systems Corporation

[JR-related Customers]

JR East Rail Car Technology & Maintenance Co., LTD.
Tokai Rolling Stock & Machinery Co., Ltd.
West Japan Railway Technos Corporation
West Japan Railway Shinkansen Technos Corporation
KSK Co., Ltd. (Kyushusharyoshizai Co., Ltd.)

Main Office

Privacy Policy

Privacy Policy
TOACK Corporation (hereinafter “Our Company”) will promote the protection of personal information by stipulating a privacy policy as detailed below, building a framework for the protection of personal information, and having its all employees thoroughly understand the importance of and address personal information protection.
1.Control of Personal Information
Our Company will, in order to keep personal information accurate and updated and prevent its unauthorized access, loss, damage, falsification, leakage, etc., strictly control the personal information with taking necessary security measures including maintenance of security system, improvement in control system and thorough implementation of employee training.
2.Utilization Purpose of Personal Information
Personal information received from customers will be used for the purpose of sending back e-mails and/or materials as a communication, a guidance of the business contents and/or a reply to such customer’s question.
3.Prohibition of Disclosure and Provision of Personal Information to Third Party
Our Company will appropriately control the personal information received from a customer and not disclose such personal information to any third party except a case where
1) such customer has agreed to the disclosure;
2) Our Company discloses such personal information to its outsourcing company in order to provide services that such customer requests; or
3) there is a necessity to disclose such personal information pursuant to laws and regulations.
4.Measures for Securing Personal Information
Our Company has been taking every possible measure to secure the accuracy and safety of the personal information.
5.Inquiry by Customer
A customer’s request including to make a reference about, revise or delete his/her own personal information will be dealt with after the identification of such customer.
6.Compliance and Revision of Laws and Regulations as well as Norms
Our Company will comply with Japanese laws and regulations as well as other norms applicable to the personal information that Our Company possesses and seek the improvement in this privacy policy with revising its contents as appropriate.
Please make any question regarding the handling of personal information by Our Company through its inquiry service.