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Super Engineering Works is one of the largest manufacturers and suppliers of top grade contactors offering high quality and reliability with long electric and mechanical life. Contactors are certified by major standards and are available for both IEC and NEMA applications.
AC Contactors are used to switch high-current loads and they may be equipped with special-purpose components not found on conventional relays and incorporate heavy contacts able to withstand high-current switching to handle such applications.
High-power circuits are repeatedly established and interrupted by special-purpose relays called Ac contactors. Ac Contactors control most integral horsepower motors (1 hp and above) and overload heaters in each controlled phase are frequently incorporated by the contactors.
Featured Products
AC Contactor Auxiliary Block
AC Contactor Coil
Description Of AC Contactor
AC Contactors are packaged as per NEMA or IEC standards and IEC devices reduce heat at their contacts through electromagnetic arc quenching techniques whereas NEMA devices heavily rely on mass to dissipate heat from arcing. A typical approach is that the blowout coils which generate a magnetic field designed to push the arc away from the contact area are used with a second set of arcing contacts which is designed to reduce the amount of arcing across the main contacts. Differences in rating practices can lead to IEC devices being smaller by 30% to 70% than their NEMA counterparts.
Overload heaters are often incorporated by contactors in each phase and an assembly or a low-resistance strip of metal is the heater element that heats up as the motor draws current. A normally closed switch will open if the heater temperature reaches a point that corresponds to a moderate overloading of the motor. The opening of the normally closed contact automatically de-energizes the relay as it usually connects in series with the relay coil and powers down the motor.
Specifications Of AC Contactor
- AC contactors available 9 Amp., 12Amp., 18Amp., 25Amp., 32Amp., 40Amp., 50Amp., 63Amp., 80Amp. and 95Amp.
- Coil Voltage available 24V AC,110V AC, 220V AC and 415V AC.
- All Contactors are channel Mounted and Base Mounted.
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