Important notice regarding IEC contactors

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Category: News

Published on Friday, 23 February 2024 11:00

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Effective February 23, 2024, ITC is discontinuing its popular line of IEC-type AC contactors from 9 to 95A, known as NC1-…., as well as the relevant accessories (overload relays NR2-…, auxiliary contacts, etc…).

While a limited supply of these components will still be available for some time, we are pleased to introduce a new line of IEC contactors covering the range of 9 to 500A, available with both AC coils (24 to 600V) and with multi-voltage coils (‘wide-range’ 24-250 VAC/DC), equipped with up to 4 auxiliary contacts and certified cULus. All corresponding accessories are available for this new series. ITC has already in stock a limited quantity of the new contactors;  orders for the old line will be accepted, subject to conditions and availability.

A new quick reference catalog ‘EC-2401 - Ex9C Contactors’ describing the new line (known as Ex9C) is available – download.     

DIN Mounted Distribution Blocks

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Category: News

Published on Tuesday, 12 December 2023 12:45

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The new, compact DTS LK series of DIN Rail mounted, compact distribution blocks with current rating ranging from 85A to 520A and accommodate up to 4 connected/linked poles.

Read more: DIN Mounted Distribution Blocks

Soft Starters

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Category: News

Published on Tuesday, 21 November 2023 12:00

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ITC is offering the new Ex9QR5 line of Soft Starters (Solid State Reduced Voltage Starters or SSRVs) from NOARK.

Soft starters offer ramping up the voltage applied to the windings of a three-phase motor during the start-up phase, in order to prevent the well-known detrimental electrical and mechanical effects which occur in case of a direct start (high in-rush current and starting torque, stress on mechanical components, etc...).

The Ex9QR5 devices offer several programmable modes of operation, plus a number of protection functions, including phase loss or unbalance, overload, over- and under-voltage, locked rotor, starter timing, and additional features.

Read more: Soft Starters

UL489 Miniature Circuit Breakers

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Category: News

Published on Tuesday, 21 November 2023 11:30

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ITC offers quick delivery on the complete range of NOARK UL 489 Miniature Circuit Breakers, up to 63A current rating. Miniature Circuit Breakers offer thermal magnetic protection against short circuit and overload conditions, in compliance with UL/CSA/IEC standards for branch circuit protection in commercial and residential applications. These include motor control, receptacle circuits, HVAC, instrumentation, UPSs, power supplies, etc.

Read more: UL489 Miniature Circuit Breakers

How to Start an AC Motor

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Category: News

Published on Tuesday, 21 November 2023 11:00

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Starting a 3-phase motor presents several problems, well known by designers and users of this type of equipment. Direct starting an AC motor will cause inrush current frequently higher than 5 times full-load current (FLA); the resulting high torque may produce mechanical stress on the equipment connected; and, last but not least, users may incur penalties from their Utility, due to consequences of the temporary high inrush current on the network.

The following is a compact and simplified exposition of the methods used to start a three-phase electric motors. The choice of these methods depends on the need to minimize the effects mentioned above – effects which are, in turn, depending also on the power rating of the motor.

Read more: How to Start an AC Motor