|June, 1948||Yamada Electric Manufacturing founded.
Began manufacture and sales of pressure and float switches.
|November, 1952||Yamada Electric Manufacturing changed to Yamada-electric. LLC.
|April, 1953||Began manufacture and sales of burn prevention machines for single-phase small motors and thermostats.|
|May, 1957||Began manufacturing and selling floatless type liquid surface control devices.|
|August, 1958||Yamada-electric. LLC changed to Yamada-electric. co.
Headquarter factory moved for business expansion.
Capital increased to ¥5 million.
|February, 1964||New Inuyama factory built along with parts of assembly lines and press machine divisions.|
|April, 1964||Began manufacture and sales of burn prevention machines for three-phase small motors.|
|October, 1964||Completed renovation of the new headquarter factory.|
|June, 1965||Developed current motor protector.|
|October, 1965||Began manufacture and sales of push-button switches.|
|December, 1966||Capital increased to ¥50 million.|
|April, 1967||Began manufacture and sales of thermal protectors.|
|February, 1969||Started the second expansion of the headquarter factory.|
|April, 1969||Relocated the Inuyama factory to Sakurakaido, the current location.|
|January, 1972||Completion of the new building of headquarter factory.
Began manufacture and sales of control panels.
|June, 1973||Completed additional expansion of Inuyama factory.
Established a molding department.
|August, 1976||Established a mass production system for centrifugal force switch.
Capital increased to ¥80 million.
|December, 1976||Capital increased to ¥100 million.|
|January, 1978||Developed thermal protector with the largest capacity ever of 22kW.|
|August, 1978||Began official manufacture and sales of low temperature thermostats.|
|June, 1979||Developed PTC start relay thermal protector.
Continued development of water outage relay.
|February, 1982||Developed pressure switches for compressors.|
|June, 1982||Provided technical support to SUE Co. in Thailand which involved production of equipments for thermal protectors.|
|April, 1983||Developed small DC motor protection thermal protector for cars.|
|October, 1983||Developed PTC application delay relay.|
|April, 1984||Developed vacuum switches.|
|August, 1984||Developed thermostats for self-retaining heat protection.|
|June, 1985||Developed reed switch type pressure sensors.|
|June, 1986||Developed photoelectric pressure sensors.|
|September, 1987||Developed CP type small current protectors.|
|December, 1988||Developed thermal protectors with temperature detection combined with an air conditioner.|
|June, 1989||Completion of the expansion on Inuyama factory for the extended production line on thermal protectors.|
|July, 1989||Developed microcomputer applied system control units.|
|September, 1989||Developed fail-safe multi-functional thermal protectors.|
|November, 1990||Developed a combination sensor for pumps.
Established the overseas branch, YAMADA ELECTRIC MFG. (MALAYSIA) SDN. BHD.
|August, 1991||Provided technical assistance to the Republic of Belarus, including the exportation of facilities and equipments for the manufacturing of thermal protectors.|
|December, 1991||Developed microcomputer pump control units.|
|June, 1992||Developed new rotary switches for air conditioners.
Provided technical assistance to Russia, including the exportation of facilitates and equipments for the manufacturing of thermal protectors.
|February, 1993||Relocated the head office to the current location.|
|March, 1993||Developed the electronic start-up relay.|
|May, 1993||Developed reversible governor switches.|
|December, 1993||Developed bubble type water level controllers.|
|June, 1994||Developed the voltage drop detection relay.|
|September, 1994||Was awarded The Minister of Health Labour and Welfare Award for excellent workplace for the disabled.|
|March, 1995||Chubu Bureau of Economy, Trade and Industry’s Overseas Business Development Survey Organization selected our overseas branch, YAMADA MALAYSIA, for inspection and gives a high evaluation.|
|April, 1995||Developed pressure sensors for inverter pumps.|
|January, 1996||Received The Small and Medium-Sized Enterprise Research Institute Award.|
|March, 1996||Developed integrated start-up operation control pressure switches.|
|April, 1996||Received The Science and Technology Director Award for the development of the fail-safe multi-functional thermal detector. Additionally, developed humidity-resistant pressure sensor.|
|December, 1996||Developed overcurrent relay for packaged-air conditioners.|
|March, 1997||Developed bubble-type water level monitoring devices.|
|July, 1997||Developed new thermal protectors for air conditioner combined with a CFC gas leak detector and an electromagnetic flow meter.|
|October, 1997||Developed linear output pressure sensors equipped with a semiconductor.|
|December, 1997||Developed new thermostats for inverter compressors and a new second-stage thermal protector.|
|February, 1998||Developed hysteresis switches for air compressor.|
|April, 1998||Developed pressure switches for handy compressor and plug-in type thermal protector.|
|October, 1999||Developed pressure switches for press machine.|
|April, 2000||Developed protective devices for air pump.|
|December, 2000||Developed immersion type water level monitors, bubble type water level monitors, and submersible pump flood detectors.|
|January, 2001||Established Yamada-electric Co., Ltd. in Wuxi, Jiangsu, China.|
|February, 2002||Developed new rotary switches for air conditioner.|
|August, 2002||Developed pressure sensors for hot water.|
|January, 2003||Developed integrated flow meters for water purifier.|
|March, 2003||Developed indoor drainage pump units.|
|October, 2003||Developed origin point sensors for printer.|
|August, 2004||Developed pump controllers for households.|
|December, 2004||Developed throw-in type level controllers.|
|May, 2005||Developed accumulators for pumps.|
|March, 2006||Developed high-flow fine sensors.|
|April, 2006||Developed flow switches for pumps in overseas markets.|
|October, 2006||Developed frost prevention controllers.|
|November, 2007||Developed energy saving starter relays for refrigerators.|
|January, 2008||Purchased molding machines and started in the resin molding industry.|
|February, 2008||Developed circuit boards for fire hydrant pumps.|
|June, 2008||Developed variable thermostats for control panels.|
|July, 2008||Developed DCBL controllers, accumulator and fine sensor for water supply auxiliary pressurizing pumps.|
|February, 2009||Developed thermostats for inverter compressors.|
|April, 2009||Developed start switches for water pumps and high sensitivity thermal protectors.|
|January, 2010||Developed circuit boards for drainage pumps.|
|March, 2011||Developed alarm boards for pumps.|
|March, 2012||Developed DCBL motor driven circuit boards for pumps.|
|January, 2013||Developed new products related to the PTC heater.|
|February, 2013||Developed pressure switch for overseas markets.|
|November, 2014||Developed SD-100; a DCBL motor driven controller for solar pumps.|
|July, 2015||Developed TS-100, multi-sensing unit, for pumps.|
|June, 2016||Due to technical support from Murata Manufacturing CO., Ltd., for the PTC start relay 7M& TM series used in refrigerator compressors, we began manufacturing.|
|December, 2016||Developed sensor-free controllers for DCBL motor pumps.|
|August, 2019||Developed paddle type flow switch FSA-125.|
|November, 2019||Developed drought detection function pressure switch PS-106L.|