Voltage Protector Price in Pakistan 2026: Mora & Tomzn

Low voltage in summer evenings, sudden high voltage when the load drops at night, and a loose neutral in the street transformer: every Pakistani household and shop knows these problems. A refrigerator compressor, an inverter AC or a water pump can burn out in seconds when the supply goes to 280 V or falls to 150 V. A voltage protector (also called an over/under voltage protective device, or OUVP) is the cheapest insurance against that damage.

This guide lists the current voltage protector prices in Pakistan at HN Electric, Lahore, explains how these devices work, and helps you choose the right one for a home, shop or three-phase connection.

Prices are taken from hnelectric.pk product pages in October 2026. Prices can change with stock and exchange rates, so always confirm on the product page before ordering.

!Tomzn 4th Gen 2-in-1 over under voltage protector price in Pakistan

What Does a Voltage Protector Do?

A voltage protector is a DIN-rail device installed in the distribution board after the main breaker. It constantly measures the incoming voltage and:

• Cuts the supply when voltage rises above the upper limit (for example 260 V) or drops below the lower limit (for example 170 V).
• Waits a set delay after the voltage returns to normal before reconnecting. This delay protects compressors from restarting under pressure.
• Shows live voltage (and on many models, current) on a digital display, so you can see exactly what WAPDA, LESCO or your solar inverter is supplying.

Advanced models also trip on overcurrent, which means one device protects against both bad voltage and overload.

Voltage Protector vs Stabilizer vs SPD

These three are often confused:

• A stabilizer corrects voltage up or down. It is bulky, expensive and usually protects only one appliance.
• A voltage protector does not correct voltage. It simply disconnects the load until the supply is safe. It is small, cheap and protects the whole house.
• A surge protection device (SPD) handles very short spikes from lightning or switching, measured in microseconds. A voltage protector is too slow for those spikes, so ideally you install both. See our surge and voltage protection range.

Voltage Protector Price List in Pakistan (October 2026)

Types of Voltage Protectors

1. Basic Over/Under Voltage Protector

The simplest type, such as the Mora 40A model, monitors only voltage. It is ideal for a small flat or a single circuit feeding a fridge or AC. If your total load is light and you mainly suffer from low voltage, this is the most economical option.

2. Volt-Ampere (2-in-1) Protector

Models like the Tomzn 4th Gen and the Lecent and Mora 2-pole devices also measure current. You set a maximum current, for example 40A, and the device trips if the load exceeds it. This is useful when a breaker alone is not tripping fast enough or when you want to stop people overloading a shared supply.

3. Protector with Energy Meter (3-in-1)

The Mora 3-in-1 adds a kWh meter, so you can track units consumed. Landlords use it to check tenant usage, and solar users use it to see how much load the house actually draws.

!Mora 3-in-1 voltage protector with kWh meter for home in Pakistan

4. Smart WiFi Protectors

The Mora 10-in-1 WiFi models connect to a phone app. You can see voltage remotely, switch the supply on or off, set timers and receive alerts. They also include leakage protection on some models. They suit people who travel or manage several properties.

5. Three-Phase Voltage Protectors

Three-phase motors, tube wells, factories and large homes need protection on all phases. A three-phase protector also detects phase failure and phase imbalance, which a single-phase device cannot. Running a three-phase motor on two phases burns its winding quickly, so this protection is essential. Read more in our guide on single phase vs three phase voltage protectors.

!Mora 100A 3 phase voltage and current protector

How to Choose the Right Voltage Protector

1. Match the current rating to your main breaker. If the main MCB is 40A, a 40A or 63A protector works. Never install a protector rated below the main breaker.
2. Single phase or three phase? Check your meter. A three-phase connection needs a three-phase protector or one single-phase device per phase.
3. Adjustable limits. Pakistani supply often sits at 190–200 V in the evening. Being able to set the lower limit (for example 165–170 V) avoids unnecessary tripping.
4. Reconnect delay. For ACs and fridges, set at least 60–180 seconds.
5. Overcurrent protection. Worth the small extra cost for homes with several ACs.

Installation Tips

• Install the protector in the DB after the main breaker and before the sub-circuit MCBs.
• Use cable of the correct size and tighten terminals properly. Most protector failures in the field are caused by loose, overheated terminals.
• For a solar system, place it on the AC output side feeding the house loads, not on the DC side.
• Add a surge protection device and a proper circuit breaker for complete protection.
• If you are not trained, ask a qualified electrician to install it.

Common Mistakes to Avoid

• Setting limits too tight, which causes constant tripping.
• Setting no delay, which restarts compressors immediately and defeats the purpose.
• Using a protector as a main breaker. It is not a substitute for an MCB or MCCB.
• Buying fake units. Cheap copies often have relays that weld shut, so the device shows voltage but never actually disconnects.

Why Buy from HN Electric?

HN Electric in Lahore supplies genuine electrical and solar protection products with delivery across Pakistan and Cash on Delivery. Each product page lists specifications, so you can compare ratings before you buy. Browse the full surge and voltage protection category.

Frequently Asked Questions

Related guides

• Smart Wi-Fi protection devices
• Three-phase system accessories guide for homes and industries
• Electrical services in Lahore by HN Electric