Circuit Protection

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

Airpax - Thermal protection, electronic packaging and power protection products.
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.
www.airpax.net/

Arc Fault detection - Information site about Arcfault detection systems, the site providing information on the causes and prevention thereof.
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.
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.
www.benderrelay.com

Bill Switchgear - Manufactures circuit breakers, circuit protection and control.
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.
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.
www.atc.co.za/

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

Controlab Inc. - Canadian manufacturer of phase failure and ground fault monitors.
phaselossprotection.com

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

Den Mar Industrial Fuses - Transformer, semiconductor, cable limiter and japanese fuses.
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.
www.dianxing-kebo.com/

EFEN Engineers - Manufacturer of electrical, power and industrial fuses.
www.efen.com

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

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

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

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

Fuse Holders Corp - Manufacturer of various fuse holders and clips.
www.fuseholders.com

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

Fusetek - Canadian fuse manufacturer.
www.gofusetek.com

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

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

Hinode Electric co., Ltd. - Manufacturer of semiconductor fuses.
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.
www.hi-techfuses.com/

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

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

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

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

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

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

LG Industrial Systems - Korean manufacturer of circuit breakers.
www.lgis.com

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

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

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

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

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

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

Merlin Gerin - The electrical distribution information website for Merlin Gerin brand of Schneider Electric.
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.
www.miamibreaker.com/

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

Ningbo Final Best Co., LTD - China manufacturer and distributor of fuses, fuse holders,switches and rocker switches
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.
www.nk-only.com/

Orion Italia - Manufacturer of electrical measure and protection relays.
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.
www.pocosales.com/

Portex. - Manufacturers and exporters of thermal and current controls of electrical equipment.
www.portexindia.com

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

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

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

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

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

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

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

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

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

Taiwan Switch Co., Ltd. - Switch manufacturer; producing molded case circuit breakers, earth leakage circuit breakers, magnetic starters, fuses, control switches and sensitive devices.
www.taiwanswitch.com.tw/

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

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

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

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

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