Circuit Protection

Advanced Protection Technologies
Manufactures surge suppressors for the home and industry.
http://www.apttvss.com/

Airpax
Thermal protection, electronic packaging and power protection products.
http://www.airpaxcorp.com/

Airpax Power Protection Products
Designs and manufactures magnetic circuit breakers and related products for telecommunications, industrial, power conditioning, HVAC, and information processing applications.
http://www.airpax.net/

Arc Fault detection
Information site about Arcfault detection systems, the site providing information on the causes and prevention thereof.
http://www.arcfault.org/

Arc flash calculator, short circuit analysis.
Power distribution system balanced symmetrical and unbalanced short circuit analysis needed for arc flash protection boundary, incident energy calculation, selection of electrical equipment, circuit protection devices. Bolted 3-phase, line to earth, double phase to ground, phase to phase, single phase open faults through zero and above zero impedance can be resolved.
http://www.arcadvisor.com

Bender Inc.
Industrial protection for measuring voltage, current, phase loss, phase reversal, frequency and other conditions in AC and DC systems up to 690V.
http://www.benderrelay.com

Bill Switchgear
Manufactures circuit breakers, circuit protection and control.
http://www.bill-switchgear.com/

BONEGA Velkoobchod spol. s.r.o.
Development, production and distribution of electrical installation devices, miniature circuit breakers, residual current devices, and switches.
http://www.bonega.cz/

Circuit Breaker Industries Ltd - CBI
Manufacturer of miniature and moulded case circuit breakers for overload and short circuit protection. From South Africa.
http://www.atc.co.za/

Cirlock
Makes circuit breakers and fuse holders for safety lockout systems.
http://www.cirlock.com.au/

Controlab Inc.
Canadian manufacturer of phase failure and ground fault monitors.
http://phaselossprotection.com

Cutler-Hammer, Inc
Manufacturer of circuit breakers, conductors, interrupters, surge protectors and breaker boxes.
http://www.fireguard.info

Den Mar Industrial Fuses
Transformer, semiconductor, cable limiter and japanese fuses.
http://ourworld.compuserve.com/homepages/DEN_MAR_FUSES/

Dianxing Electrical Appliance Industry Co., Ltd.
AC voltage regulator manufacturer and exporter in China that supplies AC voltage regulators.
http://www.dianxing-kebo.com/

EFEN Engineers
Manufacturer of electrical, power and industrial fuses.
http://www.efen.com

EL-CO
Manufacturer of ceramic fuses, holders, household ceramic based sockets, plugs and connectors.
http://www.el-co.ro

Electrical Designer's Reference
Fault current calculator, motor circuit design and protection.
http://www.edreference.com

Electromotor Protection Co.,Ltd
Manufacturing electric protection unit control, for circuit, transformer and electromotor protection, electric transducer and bus monitor control.
http://www.mingyang.com.cn/

Ferraz Shawmut, Inc.
Develops and manufactures fuses, blocks and switches. Product specifications, news, and details of employment opportunities.
http://www.ferrazshawmut.com/

Fuse Holders Corp
Manufacturer of various fuse holders and clips.
http://www.fuseholders.com

FuseOne
Sells fuses for electric circuit protection from overstock and surplus supplies.
http://www.fuseone.com/

Gamma Fuses
Distributor based in Florida USA, Gamma is a specialist fuse supplier of industrial fuses, and accessories.
http://gammafuses.com

Hepol Electric Enterprise
Manufacturer of circuit breakers, concators, fuses, relays, distribution boards and sockets plugs. from China.
http://www.c45n.com/

Hinode Electric co., Ltd.
Manufacturer of semiconductor fuses.
http://www.hinodedenki.co.jp

Hi-Tech Fuses, Inc.
Manufacturer of high-voltage current-limiting fuses, including backup and full-range types, for protecting electrical distribution equipment.
http://www.hi-techfuses.com/

Horstmann Gmbh
Manufacture of faulted circuit indicators, earth fault indicators, voltage detectors and phase comparators.
http://www.horstmanngmbh.com/

Inter-Cel
Manufacturer of thermal circuit breakers, thermal switches, bimetal thermostats, high temperature regulators, thermal protectors.
http://www.inter-cel.pl

Jaker Electric Co., Ltd.
Manufacturer of load break switch, power fuse mounting base. From Taiwan.
http://www.jaker.com.tw/

Jensen Devices AB
Manufacturer of gas discharge tubes.
http://www.jensendevices.com/

Kusum Engineering Works
Manufacturer based in India, of circuit breakers, switchgear, fusegear, and motor control gear.
http://www.kewelectricals.com

Lexor Electronic Laboratories Ltd.
Delay line and filter network manufacturers.
http://www.lexor.demon.co.uk/

LG Industrial Systems
Korean manufacturer of circuit breakers.
http://www.lgis.com

Littelfuse Circuit Protection
Manufacturing and designing circuit protection including fuses, PTC and circuit breakers for automotive, electrical and electronic applications.
http://www.littelfuse.com/

Loresco International
Manufacturer of carbon backfill and related products for the cathodic protection and electrical grounding industries.
http://www.loresco.com/

Luhfser
Expulsion fuse links protect high voltage transformers against fault currents, reduce loss during energy transmission. From Colombia.
http://www.luhfser.com/english/Index.html

MD Semiconductor, Inc.
High current surge, transient voltage suppression device manufacturer.
http://www.mdesemiconductor.com/

Mechanical Products Co.
Manufacturer of circuit breakers.
http://www.mechprod.com/

MEM Low Voltage Products
Manufacturers of circuit breakers, switchgear, fusegear, low voltage switchboards, capacitors, TVSS and motor control gear.
http://www.memonline.com

Merlin Gerin
The electrical distribution information website for Merlin Gerin brand of Schneider Electric.
http://www.merlingerin.com

Miami Breaker, Inc.
Manufactures replacement circuit breakers and automatic and manual transfer switches and is a distributor of motor controls, remanufactured breakers, GFI receptacles and electronic ballasts. From Florida, USA.
http://www.miamibreaker.com/

National Fuse Products
US supplier of domestic and foreign fuses, blocks, switches, and OEM/MRO accessories.
http://www.fuses.cc

Ningbo Final Best Co., LTD
China manufacturer and distributor of fuses, fuse holders,switches and rocker switches
http://www.ec21.net/finalbest

Ningbo Switchgear Electric Co.,Ltd
Manufacture of low voltage fuses, switch-fuse combination, thermal over-load relays and a complete set of switch equipment.
http://www.nk-only.com/

Orion Italia
Manufacturer of electrical measure and protection relays.
http://www.orionitalia.com

Poco Sales Inc.
US distributor of circuit breakers by Airpax, CBI, Eaton, ETA, Carlingswitch, Heinemann, Schurter. Featuring circuit breaker specifications, engineering drawings and design guides.
http://www.pocosales.com/

Portex.
Manufacturers and exporters of thermal and current controls of electrical equipment.
http://www.portexindia.com

Precision Controls Company
Manufacturer of circuit breakers, motor protectors and thermal discs.
http://www.precision-controls.com

Rebeck Enterprise Co., Ltd.
Manufacturer of motor, circuit breaker, contactor, transformer, electrical/ HVAC components, relay, motor starter.
http://www.contactor.com.tw/

Reuter Hanney, Inc.
Provider of electrical testing, power quality studies, system design and coordination services to commercial, industrial and institutional facilities throughout the mid-Atlantic region.
http://www.reuterhanney.com/

Rowe Hankins Components Ltd
Distributor of circuit protection devices, switches,hydraulic,magnetic circuit breakers, switchgear, traction components and measuring systems.
http://www.rowehankins.com/

Safe Line S.L.
Manufactures protection devices for overvoltage, low voltage, surge arrester and lightning. From Spain.
http://www.safeline.es/

Safety Design, Inc.
US supplier of a lockout system that can be retrofitted to any electrical panel or circuit breaker.
http://www.powerbloc.com

Sankosha USA
Manufacturer of gas tube surge arresters and gas discharge tubes for over voltage surge protection from lightning and other transient voltages.
http://www.sankosha-usa.com

Schurter, Inc.
Manufacturer of circuit protection devices including fuses, holders, circuit breakers for equipment, connectors, power entry modules, cordsets and switches.
http://www.schurterinc.com/

Shenzhen Ampron Sensitive Components Co., Ltd.
Manufacturer of PTC thermistor. From China.
http://www.ampron.com

Sleek Co., LTD
Manufacturer of fuses, micro fuses and resetable fuses.
http://www.microfuse.com/

Sri Venkateswara Precision Components
Manufacturer of the final pole assemblies, cluster assemblies, isolating contacts and mechanism assemblies of breakers.
http://www.svpcindia.com

Stanley Switch Gear Products
Manufacturing switchgears for industrial, heavy industries and for agricultural pumps.
http://www.stanleyswitch.com/

Tyco Electronics: Raychem Division
Manufacturer of overcurrent resettable devices, thyristor surge protectors, protected power switches and magnetics products.
http://www.circuitprotection.com/

Vimar Spa
Manufacturer from Italy of Circuit Breakers, RCBOs,interlocked socket-outlets, fuses, fuse holders and transient voltage suppressors.
http://www.vimar.it

Wickmann
Manufacturer of miniature, subminiature, surface mount (SMT) and automotive fuses, protectors and circuit protection components.
http://www.wickmannusa.com/

Wujin Zhenhui Electronic Co.,Ltd.
Manufacturer based in China supplying fuses, fuse holders, automotive fuses and thermal fuses.
http://www.chinafuse.com

Yueh Jyh Metal Industrial Co., Ltd.
Manufacturer based in Taiwan of fuses, circuit breakers, fuse holders and fuse blocks.
http://www.yuehjyh.com