The A&E 5KVA Relay Wall-Mounted Voltage Stabilizer (AERT90-W-5KVA) is a fast-acting, high-capacity power solution designed for Nigerian homes and offices where voltage fluctuates rapidly. Unlike servo models that use a motor to adjust voltage, this Relay-type stabilizer uses high-speed electronic switching to correct power drops and surges instantly.
Available at Kara.com.ng, the AERT90-W series is a favorite for those on a budget who still require a "Central Stabilizer" to protect an entire apartment or specific high-load appliances.
A&E 5KVA Relay 90-250V Price in Nigeria (2026 Update)
Relay stabilizers are generally more affordable than Servo models because they have fewer moving mechanical parts. However, the A&E AERT90 series uses premium copper transformers, which makes it more durable than "no-name" brands.
| Model Variant | Technology | Estimated Price (2026) |
| AERT90-W-5KVA (Wall Mount) | High-Speed Relay | ₦178,500 – ₦215,000 |
| AEST90-W-5KVA (Servo) | Motorized Servo | ₦265,000 – ₦298,500 |
| AERB45-W-5KVA (Extreme Low) | 45V Wide Range Relay | ₦225,000 – ₦255,000 |
Selection Tip: If your power "jumps" suddenly (e.g., from 160V to 240V in a split second), this Relay model is actually better than a Servo model because it switches taps instantly to protect your equipment.
Key Specifications (AERT90-W-5KVA)
- Capacity: 5,000VA (5KVA) / Approx. 3,500W – 4,000W Max Load.
- Input Voltage Range: 90V – 250V AC (Wide Range).
- Output Voltage: 220V ± 8% (Standard Household Precision).
- Technology: Multi-Tap Relay Switching + Copper Transformer.
- Mounting: Wall-Mounted (Includes heavy-duty mounting bracket).
- Display: Digital LCD showing Input Voltage, Output Voltage, and Load status.
- Protection: High/Low Voltage Cut-off, Overload, Short-circuit, and Overheat protection.
- Delay Feature: Selectable 6s / 180s (Essential for protecting AC compressors).
Why Choose the AERT90-W Relay Model?
- Instantaneous Response: Relay stabilizers respond to voltage changes in milliseconds. This is critical for protecting appliances against sudden "surges" that occur when the national grid or a large neighborhood generator is switched on.
- Affordability: You get 5KVA of central protection for significantly less than a Servo model, making it the most cost-effective way to stabilize a 1 or 2-bedroom flat.
- Low Maintenance: Since there is no motorized arm or carbon brush to wear out, relay stabilizers typically require less servicing over their lifespan.
- Space-Saving Design: The wall-mount feature keeps the unit off the floor, protecting it from moisture, dust, and accidental kicks, while freeing up space in tight corridors or kitchens.
What Can This 5KVA Stabilizer Power?
In a standard Nigerian home, this 100% copper-wound unit can support:
- One 1.5HP Air Conditioner (Non-inverter or Inverter).
- One Large Refrigerator and a Chest Freezer.
- Whole-Home LED Lighting and Standing Fans.
- Home Entertainment: 55-65 inch Smart TV, Soundbar, and Decoder.
- Laptops and Small Kitchen Gadgets.
Maintenance & Installation Tips
- Wiring: Ensure your electrician uses 6mm or 10mm Pure Copper cables. Using low-quality "mixed" cables will cause the stabilizer to underperform and may lead to burnt terminals.
- The "Clicking" Sound: It is normal for this unit to make a "click" sound when the voltage changes. This is the relay switching to the correct transformer tap.
- Mounting Height: Install the unit at eye level. This allows you to easily monitor the digital display and ensures it is high enough to stay away from floor-level dust.
Would you like me to check the availability of 10mm Installation Cables for this unit, or do you need to compare this with the Servo 5KVA for more precise voltage control?
