3.3 MVA Resistive Load Bank — LB-3300
A container-grade, low-noise 3,300 kVA load bank engineered for continuous outdoor duty. Wide voltage and frequency compatibility makes it a drop-in test load for generator sets, UPS strings, transformers and microgrids across the UK and Europe.
Everything on the datasheet.
Electrical
- Loadbank type: resistive / reactive
- Test supply 415 V, 3-phase, 50 Hz, 3/4 wire
- Rated capacity 3,300 kVA — 2,640 kW / 1,980 kVAr at 0.8 PF
- Rated current 4,630 A continuous
- Auxiliary supply 400 – 415 V, 50 Hz, 3-phase, 50 A
- Utility supply 220 – 240 V, 16 A
- Load-step resolution 1.66 kW / 1.96 kVAr at design voltage
- 240 mm² Powerlock tails available at £20 per set of 4 cables per day
Enclosure & construction
- 10 ft × 8 ft 6 in ISO-style container
- Overall dimensions 2991 × 2438 × 2896 mm (L × W × H)
- Weight 9,780 kg (21,561 lbs)
- Finish RAL 7046 — Offshore CX
- Lloyd's Register-certified container
- Twistlock corners, bottom lift
- IP55 control protection
Elements & cooling
- Stainless steel finned resistor elements
- 6 × forced-air cooling fans sized for continuous 3.3 MVA dissipation
- Low-noise variant available for noise-sensitive sites
Environmental
- Full output at 50 °C ambient
- All-weather outdoor operation
- Stackable when not in use for compact site storage
2,000 – 3,300 kVA packaged loadbank range.
Our headline unit is the 3.3 MVA LB-3300. It sits inside a wider transportable range — useful when you're specifying multi-bank tests or need extra headroom for reactive load.
| Rating | Real power @ 0.8 pf | Reactive power @ 0.8 pf | Approx. weight |
|---|---|---|---|
| 2000 kVA | 1,600 kW | 1,200 kVAr | 8,000 kg |
| 2500 kVA | 2,000 kW | 1,500 kVAr | 8,500 kg |
| 3000 kVA | 2,400 kW | 1,800 kVAr | 9,500 kg |
| 3300 kVA | 2,640 kW | 1,980 kVAr | 10,000 kg |
Line-by-line datasheet.
Every parameter from the manufacturer's spec sheet, grouped so your commissioning engineer can find what they need at a glance.
Power & connection
- Loadbank type
- Resistive / reactive
- Test supply voltage
- 415 V
- Test supply frequency
- 50 Hz (single-frequency rating)
- Phases / wires
- 3-phase, 3/4 wire star
- Rated current
- 4,630 A
- Power factor
- 0.80
- Nominal rating
- 2,640 kW / 3,300 kVA / 1,980 kVAr
- Load-step resolution
- 1.66 kW / 1.96 kVAr at design voltage
- Voltage tolerance
- +5% short-term
- Load tolerance
- ±5%
- Load connections
- M16 copper busbars, Powerlock tails
- Load switching
- AC-1, 3-pole AC contactors
Elements & reactors
- Elements
- 80/20 Nickel Chrome resistance wire
- Reactors
- Iron core, Class F
- Insulation test
- 500 V
- Protection
- Element thermal sensor, air-flow switch, reactor thermal sensor, fan overload, E-stop
Auxiliary supply
- Auxiliary supply
- 400 – 415 V, 50 Hz, 3-phase, 50 A
- Utility supply
- 220 – 240 V, 16 A
- Control voltage
- Selectable — Test (<480 V) or Auxiliary
Cooling & environment
- Cooling method
- Forced-air, vertical exhaust
- Air flow
- ~1,440 m³/min
- Max ambient
- +50 °C / +122 °F
- Min ambient
- -20 °C / -4 °F
- Max humidity
- 95% RH
- Altitude
- <500 m a.s.l.
Enclosure
- Type
- 10 ft × 8 ft 6 in ISO-style container
- Serial number
- C7884
- Year of manufacture
- 2024
- Weight
- 9,780 kg (21,561 lbs)
- Finish
- RAL 7046 — Offshore CX
- Control IP rating
- IP55
- Lifting
- Twistlock corners (bottom lift)
- Country of origin
- United Kingdom
Dimensions & airflow
- Length
- 2,991 mm (117 ¾")
- Width
- 2,438 mm (96")
- Height
- 2,896 mm (114 1/64")
- Cool-air intake
- Left & right side louvres
- Hot exhaust
- Top-mounted, vertical
- Fan array
- 6 × forced-air fans (FAN 0 – FAN 5)
Control systems
- Primary control
- MCS — PC software or LC80 terminal
- Multi-bank control
- Extendable across multiple loadbanks
- Back-up control
- KCS manual controller (optional)
- Extension cables
- 50 m or 100 m runs (10 m extend lead)
- Comms
- Fibre media converter, 110–240 V 50/60 Hz 1-ph supply
- Optional extras
- Modbus, ASS180/181/182 monitoring, Windfarm & Extreme Temp packages
Cool air in the sides, hot air out the top.
Side louvres draw ambient air across all six fans — no obstruction needed at the front or rear.
Vertical top exhaust throws heat straight up, so the unit can sit close to walls or other plant.
Plan on 1 m access to the control-side doors and unobstructed sky above the exhaust hood.
Add on-site engineers when you book and we'll handle installation, commissioning and live operation for you — up to a 12-hour shift per day.