Magnetic Circuit Protectors

Protective devices for electric equipment and circuits act as survival kits. Because of the steadily increasing power being fed into transmission lines, these guardians must often respond faster to protect equipment and branch circuits. Suppliers provide a diverse selection of devices in order to handle the broad spectrum of traditional protection needs as well as innovative designs for newer applications with rapidly changing requirements.

Basically, the protection choice is magnetic circuit breakers—a class of protector where the breaking of the circuit is a function of current only. Although the value of and need for other devices, such as fuses and thermal breakers, when used correctly, serve useful functions, the major emphasis is on magnetic breakers, the electromagnetic circuit protectors which lend themselves to a great variety of ingenious devices.

Potential applications for magnetic circuit breakers include computers, microprocessors, and other solid-state system protection, remote controls, industrial automation and air-conditioning, variable speed drives and a myriad of other industrial equipment and systems.

IEG/IEL Magnetic Circuit Protectors from Sensata provide low-cost power switching, reliable circuit protection and accurate circuit control for equipment in the international marketplace.

IEG Series

Designed using the latest in sensitive hydraulic magnetic technology, the IEG line adapts itself to many applications and environments. They are ideal for data processing and business machines, medical instrumentation, broadcast equipment, vending and amusement machines, military applications and wherever precision operation is required. Temperature differences which affect fuses and other thermal devices are not a concern.

The IEG is available in a wide variety of configurations including series, series with auxiliary switch, shunt, and relay with a choice of delays and ratings in either DC, 50/60Hz or 400Hz versions. Handles come in seven different colors and international markings are standard. Single or multi-pole versions are available with a variety of pole arrangements to meet your specifications. Four pole models require a double toggle handle. Units with a handle per pole come in one through six pole assemblies.

IEL Series

IEL circuit protectors are available in a wide variety of configurations including series, series with auxiliary switch, shunt, and relay with a choice of delays and ratings in DC, 50/60Hz or 400Hz versions. Single or multi-pole versions are available with a variety of pole arrangements to meet your specifications.

They meet VDE specifications 0804 and 0805 and IEC spacing requirements, mandatory for equipment which must comply with IEC specifications 601 and 950. In addition, the IEL models are UL recognized to UL 1077 as supplementary protectors and the LEL models are UL listed under the conditions of UL 489. Both are CSA certified and CCC Approved. The IEL is CSA certified as a supplementary protector per CSA C22.2–No. 235.

Industrial Power Controls Selection Guide