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Product Development History Guide to the Future
Date

Product name and model

C.P.C:Contact point configuration

Oct. 1960 Plug-in type auxiliary relay COM32 COM-104, IC-32, IM34, 9A-5
Specification : 24V DC 3A, 5A, 7A, 10A C.P.C: 4c, 6c, 8a 1b
Principal use : Auxiliary relay, telephone frequency meter board.
Dec. 1960 Instantaneous magnetization machine SSK series
Specification : 440V AC 30A-1200A C.P.C: 1pole-4poles double throw
Principal use : Commercial power supply system, additional power source switchover, Power switch.
Dec. 1961 Voltage Sensor (certified patent right) VRS, VHS
Specification : AC under voltage detection, under and over voltage detection
Principal use : AC power supply system monitoring, normal and unusual power supply monitoring.
Apr. 1962 Terminal blocks NHC type, ANC type
Specification : 250V 60A-200A, 60A-400A sectional
Principal use : Switchboard wiring relay.
Jan. 1965 AC-DC relays for train controls RL705, RL706, RL711
Specification : 100V DC 10A 100V DC 1.5A, 3A, 7.5A C.P.C:4C
Principal use : Train doors, brake control.
Mar. 1966 Starts supplying above-mentioned relays to Japanese National Railways
Feb. 1969 DC contactors GN-series
Specification : 48V DC 30A-250A C.P.C: SP, 2poles
Principal use : Battery powered vehicle control, generated power supply control.
Mar. 1976 NTT delivery auxiliary relay 11A 1B
Specification : 24V DC 3A C.P.C:11a, 1b
Principal use : Telephone switch auxiliary relay.
Apr. 1977 Electromagnetic contactor for power switching SSK-C
Specification : 600V AC 30A-3000A C.P.C: 1pole-4poles double throw
Principal use : Commercial power supply system, additional power source switchover, power switch.
Sep. 1978 Terminal blocks KT, KTR
Specification : 600V 15A-600A rail type, sectional
Principal use : Switchboard wiring relay.
May. 1982 DC contactors P series
Specification : 48V DC 80A-150A C.P.C: 1a, 1a 1b
Principal use : Thyristor control, battery powered vehicles.
Oct. 1983 Voltage sensors VS series
Specification : AC under voltage detection, under and over voltage detection.
Principal use : AC and DC power supply system detection, normal and unusual output detection.
Apr. 1985 Auxiliary relays LL2, LL4 series
Specification : 24V DC 7.5A C.P.C: 2c, 4c
Principal use : General power supply control power relay.
Jun. 1987 DC contactors PN series
Specification : 48V DC 80A-250A C.P.C: 1a, 1a 1b
Principal use : Thyristor control, battery powered vehicles.
Jan. 1988 High pressure contactor VHS series
Specification : 6600V AC 300A, 400A
Principal use : High voltage power supply system, power factor improvement condenser switch.
Feb. 1991 DC contactors CM series
Specification : 72V DC 20A-250A C.P.C: 1a, 1c
Principal use : Transistor control, battery powered vehicles.
Jan. 1993 Electromagnetic contactor for power switching SSK-NE (with OFF position)
Specification : 660V AC 60A-5000A C.P.C: 1pole-4poles double throw
Principal use : Commercial power supply system, additional power source switchover, power switch.
Mar. 1993 Electromagnetic contactor for power switching SSK-E series
Specification : 660V AC 30A-1600A C.P.C: 1pole-4poles double throw
Principal use : Commercial power supply system, additional power source switchover, power switch.
May. 1995 Charge connector, station JC series
Specification : 24V DC 60A, 100A, 200A, 300A
Principal use : Crewless cars automatic quick charge system.
Oct. 1996 High voltage power supply switchover electromagnetic contactor VSK series
Specification : 6600V AC 200A, 400A, 600A C.P.C: 3poles double throw
Principal use : High voltage commercial power supply system, additional power source switchover.
Jan. 1997 Electromagnetic contactor for power switching SSK-LE series
Specification : 660V AC 100A-5000A C.P.C: 1pole-4poles
Principal use : Double throw overlap switchover, non-service interruption system handling.
Jan. 1998 DC contactor MDM series
Specification : 250V DC 25A, 750V DC 50A-400A C.P.C: 1a
Principal use : DC motor control, DC electromagnet control, etc.
May. 1998 Battery reminder gauge BDN series
Specification : Battery reminder, voltage indicator
Principal use : Battery powered vehicles, etc.
May. 1999 Manual load switch MO series
Specification : 660V AC 30A-600A C.P.C: 1pole-4poles
Principal use : Manual control power supply system switchover, load break switch.
Jun. 2000 DC contactor PK series
Specification : 96V DC 500A-2000A C.P.C: 1a
Principal use : Self-motor activation, general DC load control.
Oct. 2000 Railcar control AC relay RL2617, RL2618, RL2619, RL2620
Specification : 100V DC 10A, 100V DC 1.5A, 3A, 7.5A C.P.C: 4c
Principal use : Train doors, brake control, etc.
Mar. 2002 DC contactors CP series
Specification : 72V/80V DC 230A, 300A C.P.C: 1a
Principal use : Inverter control for battery powered vehicles.
May. 2003 DC contactor KGPF, KGD series
Specification : 750V DC 25A-600A, 750V DC 10A-1000A
Principal use : DC motor control, DC electromagnet control, etc.
Feb. 2004 High-speed power switching unit HTS series
Specification : 440V AC 100A-400A C.P.C: 2poles-4poles
Principal use : Uninterruptible power supply system for data center, etc.
Mar. 2005 Power supply switchover controller PTC
Specification : 250V AC, 400V AC, 30A-600A for operation.
Principal use : Power supply system switchover electromagnetic
contactor,automatic operation controller.
Sep. 2006 Drop-type fault indicator FIR series
Specification : 100V DC 7A, 100V AC 5A
Principal use : Interrupter failure, operation indicator.
Jun. 2007 Hi-speed power switching unit HTS-SH series
Specification : 440V AC 100A-600A C.P.C: 2poles-4poles
Principal use : Uninterruptible power supply system for data center, etc.
May. 2008 Stud terminal blocks NKT-S series
Specification: 600V AC 130A-660A sectional
Principal use : Switchboard wiring relay.
Jul. 2008 DC contactor with emergency opening mechanism EMPS type
Specification: 96V DC 250A C.P.C. 1a
Principal use : Emergency stop of electric vehicle.
Dec. 2008 Three-phase open-phase relay PR type
Specification: 100V AC
Principal use : Transportation equipment such as elevators.
Apr. 2009 High-speed power switching unit compatible with 19-inch rack HTS-E2S type
Specification: 200V AC 30A
Principal use : Uninterruptible power supply system for data center, etc.
Jun. 2010 Draw-out type transfer switch with bypass NEO type
Specification: 660V AC 100A-1600A
Principal use : Commercial power supply system, additional power
source switchover,power switch, uninterruptable power supply.
Oct. 2010 Shock resistant relay (52Y)
Specification: 250V DC 15A 2a2b
Principal use : Relay for anti-re-input circuit breaker.
Nov. 2010 E2 type transfer switch
Specification: 200V AC 30A
Principal use : Commercial power supply system, additional power source switchover, power switch.
June. 2011 Model CP23C/CP23C2 dustproof DC magnetic contactor (IP65 rated)
Specification: 72V/80V DC, 230A
Principal use : For electric vehicles with inverter- controlled storage batteries.
Aug. 2011 Electromagnetic contactor for transformer tap switchover(TC type)
Specification: 3000V AC 600A-4000A
Principal use : Transformer tap switchover.
Dec. 2011 Switch for insulated rail joint short circuit (for Seikan Tunnel construction)
Specification: 600V AC 800A 1c
Principal use : Switchover return current and track circuit signal.
Dec. 2011 KMD type DC contactor
Specification: 440V DC 50A-400A 1a, 1b
Principal use : DC motor control.
Sep. 2012 Fast contactor HMC type
Specification: 600V AC / 600A, 3a
Principal use : Fast switching for High voltage circuit.
Oct. 2012 High voltage terminal block HKT series
Specification: 1000V DC 30A – 1000A
Principal use : High voltage circuit.
Mar. 2013 DC manual switch BMS2X-2 series
Specification:1000V DC 10A
Principal use : Connection box for Solar system. High voltage circuit.
May. 2013 ATS controller PTC-A type
Specification: 100V AC-240V AC
Principal use : Control for automatic transfer switchies.
May. 2013 Model VSK-C-CA automatic high-voltage vacuum power transfer switch
Specification: 3.6/7.2kV AC, 400A/600A
Principal use : Switching between permanent power supply and standby power supply.
May. 2013 Model NN2-2 power relay
Specification: 220V AC 7.5A, 110V DC 7A
Principal use : Relay for switchboard.
May. 2013 Model DTM timer relay
Specification: 100V/200V AC/V DC, 120seconds
Principal use : Relay for crane equipment in iron mills.
Jul. 2014 Model SIV25 power transfer switch
Specification: 1500V DC 400A
Principal use : Switching for railroad vehicles.
Aug. 2014 Model KMD25 DC magnetic contactor
Specification: 220V DC 25A
Principal use : DC motor control.
Aug. 2015 Model MO manual power switch with switching indicator function
Specification: 500V AC 30A-500A
Principal use : Manual power switching and load switching.
Oct. 2015 Power switch for railroad signaling
Specification: 105V AC 50A-500A
Principal use : Railroad signal power switching.
Nov. 2016 Model TRC160 DC magnetic contactor
Specification: 750V DC 160A
Principal use : Switching for railroad vehicles.
Feb. 2017 Model ET grounding terminal block
Specification: 600V 100A-400A
Principal use : Grounding terminal block for switchboard.
May. 2017 Model BKT inter-board terminal block
Specification: 600V 30A/40A
Principal use : Separate terminal block for switchboard.
Aug. 2017 Model HVR-H high-speed DC overvoltage relay
Specification: 400V DC, 3ms max. operating time
Principal use : Overvoltage prevention for wind power generation equipment.
May. 2018 DC manual switch BMS2H-2 series
Specification: 1500V DC 10A
Principal use : Connection box for Solar system. High voltage circuit.
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