Leo AC300B4 / 3KW 400V Centrifugal Pump And Motor
5140
The LEO AC300B4 is a robust centrifugal pump engineered for reliable water transfer and pressure boosting across residential and commercial applications. This versatile pump excels in urban water supply systems, high-rise building pressure boosting, fire fighting installations, garden irrigation, long-distance water transfer, and HVAC circulation-making it an ideal choice for both industrial facilities and municipal infrastructure projects requiring consistent performance with clean water and similar liquids.
Built with a cast iron pump body and support featuring specialized anti-rust treatment, the AC300B4 combines durability with precision engineering using an AISI 304 stainless steel shaft that resists corrosion in demanding environments. Its copper-wound motor delivers low-noise operation with extended bearing life, while the IPX4 enclosure rating and built-in thermal protection on single-phase models ensure safe, dependable service in challenging conditions-perfectly suited for continuous circulation, cold and hot water applications, and supporting equipment in industrial heating and cooling systems.
At a glance
Power: 3 kW (4 HP)Supply: 400 V three-phase, 50 HzMax. head: 20 mMax. flow: 71 m³/h (1200 l/min)Connections: 4"Specifications
| Brand | Leo |
| Model | AC300B4 |
| Catalogue model | ACm300B4 (same hydraulics) |
| Type | ACm/AC-B3/B4 Centrifugal Pump (3"/4" high flow) |
| Motor power | 3 kW (4 HP) |
| Supply | 400 V three-phase, 50 Hz |
| Inlet / outlet | 4" |
| Shut-off head | 20 m |
| Flow range | 0 – 71 m³/h (0 – 1183 l/min) |
| Dimensions (W × L × H) | 28.8 × 52.2 × 35.2 cm |
| Weight | 43.3 kg |
| Item code | AC300B4(380V) |
Performance Table
| Flow Q (m³/h) | 0 | 12 | 18 | 24 | 30 | 36 | 42 | 48 | 54 | 60 | 66 | 71 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flow Q (l/min) | 0 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 |
| Head H (m) | 20 | 19.8 | 19.6 | 19.5 | 19 | 18.3 | 17.5 | 16.2 | 14.6 | 13 | 11.5 | 10 |
Head at each flow rate from the manufacturer's technical data. For a duty-point check use the Get a Quote wizard below.
Performance Curves and Technical Data (PDF)
Download the curve sheet with the performance curves, dimensions and technical data for the Leo AC300B4:
Leo ACm/AC-B3/B4 Centrifugal Pump (3"/4" high flow) – Performance Curves and Technical Data (01-DOMESTIC PUMP catalogue p28)
361 kB | Download
Applications
- Can be used to transfer clean water or other liquids similar to water in physical and chemical properties
- Suitable for industrial use and urban water supply, pressure boosting for high buildings and fire fighting, garden irrigation, long-distance water transfer, heating ventilation and air conditioning, circulation and pressure boosting for cold and hot water, and supporting equipment etc.
Pump
- Cast iron pump body and support under special anti-rust treatment
- AISI 304 shaft
- Max. liquid temperture: +60 degC
- Max.suction: + 8m
Motor
- Low noise&Long life bearing
- Motor with copper winding
- Built-in thermal protector for single phase motor (<=1.5kW)
- Insulation class: F
- Enclosures class: IPX4
- Max. ambient temperture: +50 degC
- IE 2 motor (Three phase, power >= 0.75kW)
Model Code: AC300B4(380V)
- A - LEO Product Style
- C - Centrifugal Pump
- m - Single Phase Motor (Omitted for three-phase motor)
- 220 - Power (x10W)
- B - Features
- 3 - Inlet Diameter (")
Need help choosing or want a price?
Our pump team will check the right size for your flow and head and give you a quote.
WhatsApp us: 082 516 2248 Get a Quote / Size my pump info@pumps.co.za
Frequently Asked Questions
What is the maximum head of the Leo AC300B4?
The Leo AC300B4 has a maximum head of 20 m.
How much water can the Leo AC300B4 pump?
The Leo AC300B4 pumps up to 71 m³/h (1200 l/min).
What power supply does the Leo AC300B4 need?
Supply: 400 V three-phase, 50 Hz. Motor power: 3 kW (4 HP).
What are the pipe connections of the Leo AC300B4?
4".
