IEC Non-Reversing Starters
Electric motors and motor controls are measured by two different standards: the National Electrical Manufacturers Association (NEMA) and the International Electrotechnical Commission (IEC).
NEMA is mostly used in North America and started out by urging manufacturers to use a standard frame size for motor control and lighting applications. Since then, it sees to it that manufacturers design components that meet safety factors and design ratings, as well as oversees the configuration and performance parameters of electrical components. IEC oversees the standards for the European electrical communities. IEC-certified components are now widely being used by companies in North America and are low cost, compact and inherently safe to the users.
IEC starters are sold as components comprising a contactor, an auxiliary block and overload relay block. Each component is selected and assembled without the use of tools. IEC products are more flexible and modular and can snap on DIN rails up to 75mm.
Schneider Electric IEC combination starters combine the requirements of motor short circuit and overload protection in one compact package. The IEC combination starter line accepts standard TeSys D accessories, control power transformer kits and all Insta-Kits pilot devices. Standard capacity control power transformers with built-in fuse block can be installed in the standard enclosure.
Schneider Electric TeSys H is a multifunctional starter for motors up to 3 KW/480 V. It helps to reduce space in control cabinets by providing up to four functions: forward running, reverse running, protection against phase imbalance and motor overload, and safe shutdown. There are two variants of the TeSys H motor starter: the standard motor starter and the Safe Torque Off motor starter.
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