3 Pole Changeover Switch EP 20A-63A

A 3 phase changeover switch is the practical answer when you need manual source transfer between two power feeds without moving to a full automatic transfer setup. This CNC Electric EP series page is for the 3 pole panel-mount version sold in Pakistan in 20A, 32A, and 63A positions. At the time checked, the live local page showed Rs.1,650 for 20A, Rs.1,950 for 32A, and Rs.2,850 for 63A, with the 63A option marked sold out. For workshop panels, generator backup boards, inverter source selection, and three-phase motor load shifting, this is a compact manual 1-0-2 selector built for cabinet use rather than DIN-rail mounting.

The buying logic is simple. If the operator is expected to make the transfer manually and the switch needs to sit neatly on a panel door or cabinet face, this EP type makes more sense than a DIN rail changeover breaker. If the site must transfer by itself during a power failure, then a proper automatic transfer switch is the correct product instead. This page is for the first case: manual three-phase transfer with a rotary 1-0-2 handle in a compact panel-mount format.

Key Features

• 3 pole EP series manual changeover switch for three-phase circuits.
• Live local variants: 20A, 32A, and 63A with 1-0-2 rotary operation.
• Panel-mount format for electrical equipment cabinets where DIN rail space is limited.
• Used for main-to-backup source transfer, inverter changeover, and three-phase motor load shifting.
• Local product page states voltage up to 440V AC and silver-alloy contacts.
• Useful companion products include voltage protectors, surge protection devices, circuit breakers, and DB boxes.
• A good fit for Lahore workshop boards, Karachi utility rooms, and Faisalabad production panels where manual transfer is acceptable.

Technical Specifications

This description uses only data published on the live local sale page plus limited official EP family information where it helps explain the product class. Exact panel cut-out dimensions, shaft/handle kit details, endurance tables, and variant-by-variant terminal drawings are not currently listed on the live local page and have not been guessed.

Product Range and Prices

This is the panel-mount branch of the manual transfer family. If your cabinet is already laid out around rail hardware, the better internal alternative may be a DIN-rail changeover breaker. If the load must transfer automatically when WAPDA fails, the right move is an ATS switch, not a manual EP selector.

Applications in Pakistan

In Pakistan, this type of 3 phase changeover switch is most useful where a technician or operator can manually choose between two live sources. In Lahore, that often means a three-phase workshop or office backup panel where the operator can move from grid to generator. In Karachi, it can fit a commercial generator board or utility room where the switch must sit neatly on the panel rather than on a DIN rail. In Faisalabad, small production units often want a simple internal cabinet selector instead of paying for a full automatic transfer setup.

How to Choose the Right 3 Phase Changeover Switch

3 Phase Changeover Switch vs Alternatives — Why CNC?

What This Product Does NOT Protect Against

This 3 phase changeover switch does not protect against overvoltage, undervoltage, short circuit, overload, or surge damage by itself. It is a manual source-transfer device. It does not replace the correct circuit breaker, AC breaker, voltage protector, or SPD. It also does not perform automatic transfer. If the site must change source during an outage without a person present, use an automatic transfer switch instead.

Installation Guide

1. Confirm the panel really needs a panel-mount manual transfer switch and not a DIN rail changeover or ATS.
2. Mount the EP switch firmly on the cabinet or panel face so the rotary action stays stable under repeated use.
3. Mark source I, source II, and center OFF clearly so the operator cannot confuse grid, generator, or inverter positions.
4. Add correct upstream protection using the required breakers, voltage protection, and surge protection.
5. Test the 1-0-2 positions physically before energising the complete panel.

Related Products

• Changeover Switch EP for similar panel-mount manual transfer products.
• Changeover Breakers if your project is built around DIN rail layout.
• Automatic Transfer Switches when manual transfer is not acceptable.
• Voltage Protectors to protect connected loads during bad mains conditions.
• Voltage Protector Finder Tool if you are unsure what protection level the backup panel needs.
• SPD to protect the panel against surge events.
• Circuit Breakers and AC Breakers for upstream fault protection.
• Magnetic Contactors when the panel also handles motor control duty.
• Fire Extinguishers as the final panel-safety add-on.
• Changeover Breaker Guide and Types of Circuit Breakers Guide for planning the full system.

Frequently Asked Questions

What is a 3 phase changeover switch used for?

It is used to manually transfer a three-phase load between two sources, usually mains and generator, mains and inverter, or two controlled supplies, with a center OFF position between them.

What is the price of this 3 phase changeover switch in Pakistan?

At the time checked, the local page showed Rs.1,650 for 20A, Rs.1,950 for 32A, and Rs.2,850 for 63A, with the 63A option shown sold out.

Is this switch automatic?

No. This EP series product is manual. If you need transfer during an outage without operator action, you need an ATS switch.

What does 1-0-2 mean?

It means source 1, OFF, and source 2. The center OFF position gives a clear isolation point before the operator selects the second source.

Should I choose EP series or a DIN rail changeover?

Choose EP when you want a panel-mount rotary selector in a cabinet. Choose a DIN rail changeover when the board layout is already built around rail-mounted hardware.

Can this switch protect my equipment from low or high voltage?

No. Source selection and voltage protection are different jobs. Add a voltage protector if that is part of the requirement.

Can this be used with a generator backup panel?

Yes, that is one of its normal uses when the operator is expected to transfer manually between mains and generator.

Does this product deliver across Pakistan?

Yes, CNC Electric Pakistan ships nationwide. For stock confirmation, delivery details, and wiring guidance, use WhatsApp before finalising the order.

For stock confirmation, panel selection help, and three-phase source-transfer guidance, WhatsApp 0326-1111376. Orders above Rs.10,000 qualify for free delivery, and the right backup panel can be completed with SPD, voltage protection, and the correct breaker setup from CNC Electric Pakistan.