The Grundfos 5 SQ05-180 is a 3-inch multi-stage submersible pump built for domestic water supply, tank liquid transfer, irrigation, and environmental applications requiring reliable, compact deep-well performance.

Key Features

• Permanent Magnet Motor Technology Single-phase MS3 motor with permanent magnet rotor delivers optimum efficiency across a wide load range with direct-on-line starting and IP68 waterproof enclosure.
• Floating Impeller Design Each multi-stage impeller floats on its own individual tungsten carbide/ceramic bearing, reducing wear and extending pump service life under continuous operation.
• Comprehensive Built-In Protection Integrated soft start and automatic protection against dry-running, upthrust, overvoltage, undervoltage, overload, and overtemperature safeguard the motor without external modules.
• Stainless Steel Construction Pump body and motor housing are manufactured from AISI 304 stainless steel, with glass-fiber-reinforced composite impellers rated for continuous water service from 0–35°C.
• Compact 3-Inch Form Factor Fits boreholes from 76mm diameter with a 1" NPT pump outlet and maximum operating pressure of 15 bar, suitable for a wide range of well and tank installations.

The 5 SQ05-180 operates at a rated speed of 10,700 RPM, delivering a rated flow of 1 m³/h at a rated head of 72 m, with a maximum head exceeding 90 m at low flow. Power input is 1.09kW with a rated shaft power of 0.7kW, and the motor draws 12A at 100–115V single phase, 50Hz.

The motor is fitted with a replaceable end cover with socket for simplified field serviceability, and the 1.5m factory-fitted cable allows for immediate installation without additional cable prep. The unit is certified to cULus and meets ISO 9906:2012 Grade 3B curve tolerance, ensuring performance consistency across production batches.

Technical Specifications