Submersible Pump GRUNDFOS SQ 3-40 230V 0.63 kW with 30 m Cable (hydrofor package)

GRUNDFOS SQ 3-40 230V 0.63 kW is a compact submersible borehole pump supplied with a 30 m power cable as part of a hydrofor package. The pump is intended for vertical installation in narrow wells and confined spaces, delivering multi-stage pressure boosting and steady water supply for domestic and light commercial systems. Its compact design and submersible configuration allow installation below the water level, reducing noise and preserving space above ground.

Advantages

The pump provides reliable vertical multi-stage performance with consistent flow and pressure. Supplied with a 30 m cable, it is ready for deep-well installations and simplifies connection in a hydrofor package. Designed for continuous and intermittent operation typical of household and small commercial systems, the unit combines compact dimensions with corrosion-resistant materials for prolonged service life in groundwater environments.

Suitable for

• Domestic water supply from boreholes and wells
• Pressure boosting for small buildings and cottages
• Irrigation of small gardens and allotments
• Integration into hydrofor/pressure tank systems

Key specifications

• Power supply: 230 V single-phase
• Rated motor power: 0.63 kW
• Design: submersible, vertical multi-stage pump
• Cable length included: 30 m
• Application: borehole and well installations, compact submersible use

How to use

Install the pump vertically inside the borehole or well following local electrical and plumbing regulations. Ensure the pump is fully submerged and positioned with sufficient clearance from the well walls and sediment. Connect the 230 V supply using appropriate protection (circuit breaker, residual-current device) and ensure cable entries are watertight. Integrate the pump with a hydrofor or pressure tank to regulate start/stop cycles and maintain steady pressure. Commission the system by slowly filling and venting any air from the delivery line, then observe operation parameters to confirm expected flow and pressure.

Usage recommendations

To maximize lifetime and reliability, use appropriate filtration to minimise solids, avoid running the pump dry, and follow scheduled inspections of electrical connections and mechanical fastenings. Match pump selection to well diameter and expected drawdown, and consult installation manuals or a qualified technician for system-specific adjustments.