Description
The JS Pumps JS-400 230v Manual heavy duty contractor pump (code 011-400) is a cast iron submersible drainage pump for clean and dirty water. It delivers up to 240 litres per minute and lifts to a maximum head of 12 metres from a 0.4 kW motor, through a 2″ outlet, running on standard 230v single-phase mains.
This is the manual version, so it runs whenever the power is on. That suits attended dewatering, or a fixed installation where a separate float switch or control panel switches the pump. The JS-400 230v Automatic is the same pump with automatic operation, and the JS-750 2″ 230v Manual is the next size up, 400 l/min to 15 m.
Like every pump in the range, it has a stainless steel motor case and shaft, a cast iron volute, motor top cover and lower bearing and seal housing, and twin mechanical seals (carbon ceramic and silicon carbide) in a lubricated oil chamber. The side-mounted outlet points vertically upwards, and the pump comes with 10 metres of power cable and a hose tail.
Features
- Cast iron and stainless steel construction for site use
- Twin mechanical seals in a lubricated oil chamber
- 0.4 kW motor, 230v supply, 3.8 A
- Up to 240 l/min and 12 m head
- 2″ side vertical outlet with hose tail
- Manual operation (add a float switch for unattended use)
- 10 metres of power cable
Applications
- Basement, cellar, plant room and sump drainage on mains power
- Trenches, lift pits and foundations
- Flood clearance
- Plant hire fleets
Suitable for clean and dirty water with small solids such as silt, sand and grit. Not designed for sewage, sludge, rag or fibrous material, or water containing oil or chemicals.


The JS heavy duty range
| Model | Outlet | Voltage | Max Flow (l/min) | Max Head (m) | Motor (kW) | Current 230v / 110v (A) | H x W x L (mm) | Kg |
|---|---|---|---|---|---|---|---|---|
| JS-250 | 1½” | 110v or 230v | 200 | 10 | 0.25 | 1.9 / 4.0 | 370 x 150 x 220 | 12 |
| JS-400 | 2″ | 110v or 230v | 240 | 12 | 0.4 | 3.8 / 7.8 | 420 x 150 x 220 | 15 |
| JS-750 2″ | 2″ | 110v or 230v | 400 | 15 | 0.75 | 6.8 / 13.0 | 480 x 195 x 255 | 26 |
| JS-750 3″ | 3″ | 110v or 230v | 400 | 15 | 0.75 | 6.8 / 13.0 | 480 x 195 x 285 | 27 |
| JS-1500 | 3″ | 230v only | 720 | 19 | 1.5 | 12.0 / n/a | 510 x 195 x 285 | 32 |
| JS-1500H | 2″ | 230v only | 450 | 22 | 1.5 | 12.0 / n/a | 480 x 195 x 255 | 32 |
Flow and head are JS Pumps’ published maximums. Every model is available manual or automatic, and the JS-250, JS-400 and JS-750 in 110v or 230v. See the JS Heavy Duty Contractor range page for every version and answers to common questions.





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