| Airpax | | Thermal protection, electronic packaging and power protection products. |
| Airpax Power Protection Products | | Designs and manufactures magnetic circuit breakers and related products for telecommunications, industrial, power conditioning, HVAC, and information processing applications. |
| Arc Fault detection | | Information site about Arcfault detection systems, the site providing information on the causes and prevention thereof. |
| 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. |
| Bender Inc. | | Industrial protection for measuring voltage, current, phase loss, phase reversal, frequency and other conditions in AC and DC systems up to 690V. |
| Bill Switchgear | | Manufactures circuit breakers, circuit protection and control. |
| Bussmann | | Products include extensive circuit protection solutions approved for use in a variety of major standards. |
| Controlab Inc. | | Canadian manufacturer of phase failure and ground fault monitors. |
| Cutler-Hammer, Inc | | Manufacturer of circuit breakers, conductors, interrupters, surge protectors and breaker boxes. |
| EFEN Engineers | | Manufacturer of electrical, power and industrial fuses. |
| EL-CO | | Manufacturer of ceramic fuses, holders, household ceramic based sockets, plugs and connectors. |
| Electromotor Protection Co.,Ltd | | Manufacturing electric protection unit control, for circuit, transformer and electromotor protection, electric transducer and bus monitor control. |
| Erik Larsen Pty Ltd | | Cirlock for circuit breakers and Fuselock for fuse holders are a great safety lockout systems. |
| Ferraz Shawmut, Inc. | | Develops and manufactures fuses, blocks and switches. Product specifications, news, and details of employment opportunities. |
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