3-Phase Voltage Protector Price in Pakistan 2026 — 25A to 200A Buyer Guide
A 3-phase voltage protector is what factories, commercial buildings, and 3-phase residential installs need to protect against phase failure, voltage sag, and over-voltage — all at once. Pakistani 3-phase distribution feeders are notoriously unstable: phase asymmetry, missing neutrals, dropped phases — every event can cost a 3-phase motor PKR 35,000-180,000 in rewind.
This guide covers 3-phase voltage protector prices in Pakistan for 2026, sizing for 25A to 200A loads, and the wiring to integrate with your existing 3-phase DB box or motor panel.
1. What is a 3-phase voltage protector?
A 3-phase voltage protector continuously monitors all 3 phases (R, Y, B) and cuts the load if any of the following occur:
- Any phase voltage exits 170-265V safe band
- Phase asymmetry exceeds 10% (one phase ≠ others)
- Phase failure (any phase drops out)
- Wrong phase rotation (will not allow start)
- Neutral failure (in 4-wire systems)
It restores power automatically once all 3 phases return to normal for a programmable delay (typically 5-30 seconds).
2. 3-phase voltage protector prices Pakistan 2026
| Model | Amperage | Voltage | Phases | Price PKR |
|---|---|---|---|---|
| CNC YC3VP-25 | 25A | 380V | 3-phase + N | 9,500 |
| CNC YC3VP-40 | 40A | 380V | 3-phase + N | 12,500 |
| CNC YC3VP-63 | 63A | 380V | 3-phase + N | 16,800 |
| CNC YC3VP-100 | 100A | 380V | 3-phase + N | 24,500 |
| CNC YC3VP-125 | 125A | 380V | 3-phase + N | 32,500 |
| CNC YC3VP-200 | 200A | 380V | 3-phase + N | 52,000 |
| CNC YC3VP-W-63 | 63A WiFi smart | 380V | 3-phase + N | 22,000 |
| CNC YC3VP-W-125 | 125A WiFi smart | 380V | 3-phase + N | 42,500 |
3. Sizing rules for Pakistani 3-phase loads
- Total your 3-phase load in kW (sum all motors, ACs, equipment).
- Convert to amps: kW × 1000 / (1.732 × 380V × 0.85 PF) = continuous current per leg.
- Add 25% safety margin.
- Pick the next standard catalogue rating: 25A, 40A, 63A, 100A, 125A, 200A.
Quick lookup
| Application | Recommended protector |
|---|---|
| Small workshop 5-10 kW 3-phase | YC3VP-25 PKR 9,500 |
| Medium workshop 15-25 kW | YC3VP-40 PKR 12,500 |
| Light commercial / restaurant 30-40 kW | YC3VP-63 PKR 16,800 |
| Medium commercial 60-80 kW | YC3VP-100 PKR 24,500 |
| Large commercial 80-100 kW | YC3VP-125 PKR 32,500 |
| Industrial 150-200 kW | YC3VP-200 PKR 52,000 |
| Solar prosumer with 3-phase grid feed | YC3VP-63 PKR 16,800 minimum |
4. Installation in a 3-phase DB box
- Power off at the upstream main breaker. Verify zero voltage on each phase with a tester.
- Mount the protector on DIN rail or wall depending on model size.
- Wire R, Y, B phases + Neutral from the grid feed into the protector's IN terminals.
- Wire R, Y, B phases + Neutral from the protector's OUT terminals to the downstream MCB row or motor contactor.
- Connect earth to the protector's earth terminal.
- Power on. Set parameters:
- Under-voltage trip: typically 195V per phase
- Over-voltage trip: typically 265V per phase
- Asymmetry threshold: 10%
- Restoration delay: 10 seconds - Test: simulate phase loss by switching off one upstream MCB; protector should trip within 100-300 ms.
5. 3-phase vs single-phase voltage protector
| Single-phase protector | 3-phase protector | |
|---|---|---|
| Monitors | 1 phase + neutral | 3 phases + neutral |
| Detects phase failure? | Yes (the only one) | Yes (any of 3) |
| Detects asymmetry? | No | Yes |
| Detects wrong rotation? | No | Yes |
| Cheapest model | PKR 3,200 (YC7VA 63A) | PKR 9,500 (YC3VP-25) |
6. FAQ
Cheapest 3-phase voltage protector in Pakistan 2026?
CNC YC3VP-25 at PKR 9,500 — 25A 3-phase + N, suitable for small workshops up to 10 kW 3-phase.
Do I need a 3-phase protector if I have a phase failure relay?
A phase failure relay only detects phase loss. A 3-phase voltage protector adds over-voltage, under-voltage, asymmetry, and rotation protection. Best practice: use both, or use a 3-phase protector that includes phase failure detection.
Will it protect a 3-phase solar inverter?
Yes — install upstream of the inverter's AC input. Protects against grid events that could damage the inverter.
Is the WiFi smart variant worth +PKR 6,000?
For factories where downtime costs money: yes — app alerts, runtime logs, scheduled tests. For typical residential 3-phase: standard variant is enough.
Will CNC YC3VP-series work with Inverex/Knox/Solis solar inverters?
Yes — it's grid-side protection, inverter brand-agnostic. Install between WAPDA feed and your DB/inverter input.
7. Related guides
- Single-phase Voltage Protector Buying Guide
- Phase Failure Relay Buying Guide
- Voltage Regulator vs Stabilizer vs Protector Comparison
8. Need a 3-phase voltage protector for your install?
Send your total kW load + phase count on WhatsApp +92 326 1111 376. Free Pakistan delivery on orders over PKR 5,000.