AC Isolator 4 Pole 250A-1000A | Industrial

AC isolator switch 4 pole is the correct choice when you need safe manual isolation of a higher-current circuit in Pakistan, not automatic transfer and not protective tripping. On the live CNC Electric Pakistan page, this YCHGL listing starts at Rs.15,000 for 250A and goes up to 1000A. That makes it a serious panel component for main incomers, generator boards, industrial feeders, solar AC side isolation, and maintenance shut-off duty where a clean visible disconnect point matters.

Buyers often confuse three different products: an isolator, a changeover, and an MCCB. They are not the same job. A changeover breaker selects between two sources. An AC MCCB gives overload and short-circuit protection. This 4 pole isolator switch is mainly for deliberate switching and safe electrical isolation. If a technician must lock out a feeder or a plant needs a proper off point before maintenance, this is the category you look at first.

Key Features

Technical Specifications

This description uses live local sale facts plus limited official YCHGL family data where it clearly helps explain the switch class. Exact local accessory options, shaft/handle kits, enclosure cut-out sizes, and every variant’s dimensional drawing are not currently listed on the live local page and have not been guessed.

Product Range and Prices

Applications in Pakistan

This kind of isolator is common in larger boards where shutdown and maintenance have to be clear and deliberate. In Lahore industrial workshops and commercial buildings, a 4 pole isolator often sits at the incomer side of a main panel or generator section. In Karachi, it can make sense in utility rooms, plant boards, or coastal commercial installations where maintenance teams want a visible and reliable disconnect point. In Faisalabad factories, it suits feeder isolation on textile or process panels where you do not want to rely only on a control-circuit stop command before electrical work begins.

How to Choose the Right 4 Pole Isolator

AC Isolator vs Alternatives — Why CNC?

What This Product Does NOT Protect Against

This isolator switch does not replace overload protection, short-circuit protection, surge protection, or automatic transfer logic. It does not trip like an MCCB. It does not decide between mains and generator like an EP changeover switch or ATS. It is also not a voltage stabilizer or voltage protector. Its real job is manual switching and safe isolation under the correct design conditions.

If your board also needs protection, build the system properly with the right circuit breakers, MCCBs, surge protection devices, and where voltage fluctuation is a risk in Pakistan, the right voltage protector.

Installation Guide

1. Confirm the current rating against the real feeder design, cable size, and upstream protection plan before ordering.
2. Mount the switch on a proper panel structure with the manufacturer’s handle and shaft arrangement suited to the enclosure design.
3. Mark incoming and outgoing sides clearly so maintenance teams understand the isolation point without confusion.
4. Use the correct lugging, torque practice, and enclosure spacing for the current band you selected.
5. Test on-off isolation with the panel de-energized first, then commission under proper supervision.

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Frequently Asked Questions

What is an AC isolator switch used for?

It is used for manual switching and safe electrical isolation of a circuit or feeder, especially before maintenance or shutdown work.

What is the AC isolator switch price in Pakistan on this CNC Electric page?

At the time checked, the live page starts at Rs.15,000 for the 250A version and goes up to Rs.87,000 for the 1000A version.

Does this 4 pole isolator give overload protection?

No. Use the proper MCCB or breaker for overload and short-circuit protection. This device is mainly for isolation and manual switching.

Should I use this instead of a changeover switch?

Only if you need isolation, not source selection. If you need to move between mains and generator, a changeover or ATS is the correct category.

Is this suitable for solar AC side isolation?

It can suit solar AC-side shutdown and service isolation in the correct design, but it does not replace breaker, surge, and voltage-protection planning around the system.

Which current size should I choose?

Choose on the actual feeder design, cable size, upstream protection, and panel duty. Do not size it only by guess or by the connected load label.

Can this be used in generator panels in Lahore or Karachi?

Yes, isolator switches of this class are commonly suitable in generator boards and industrial panels where a clear manual disconnect point is needed.

Does CNC Electric deliver this across Pakistan?

Yes, CNC Electric Pakistan sells nationwide, and orders above Rs.10,000 qualify for free delivery according to the current site messaging.

AC isolator switch 4 pole is the correct buy when the board needs a deliberate, visible disconnect point and the real requirement is isolation, not protective tripping or source transfer. This CNC Electric YCHGL page covers 250A to 1000A options for serious panel work in Pakistan. For sizing help, stock confirmation, or project discussion, contact CNC Electric Pakistan on WhatsApp 0326-1111376. Orders above Rs.10,000 qualify for free delivery.