Grundfos UNILIFT KP.250.A.1 Submersible Pump

The UNILIFT KP.250.A.1 submersible pump is designed for pumping non-aggressive water and greywater in both domestic and professional applications. Its all-stainless steel construction ensures high corrosion resistance, long service life, and reliable operation even under demanding conditions.

This model can be used as a portable unit or installed permanently, both indoors and outdoors, making it ideal for draining basements, garages, pits, tanks, cisterns, and for emergency water removal.

Main Applications

• Drainage of greywater and non-aggressive water
• Emptying basements, garages, and pits
• Removal of infiltration or emergency water
• Portable use or fixed installation indoors and outdoors

Hydraulic Performance

• Maximum flow rate: 3.11 liters per second
• Nominal head: 5.12 m
• Maximum head: 7.5 m
• Maximum particle passage: 10 mm

Materials and Construction

• Hydraulic body in AISI 304 stainless steel
• Pump casing in AISI 304 stainless steel
• Impeller in AISI 304 stainless steel
• Compact, robust, and corrosion-resistant design

Installation

• Type of hydraulic connection: Rp
• Connection diameter: 1 1/4 inches
• Maximum installation depth: 7 m
• Suitable for indoor and outdoor installation
• Ambient temperature range: 0 to 50 °C

Electrical Data

• Power input (P1): 480 W
• Rated power (P2): 0.25 kW
• Power supply: 1 x 220-230 V
• Network frequency: 50 Hz
• Rated current: 2.3 A
• Capacitor: 8 µF / 400 V
• Protection rating: IP68
• Insulation class: F
• Internal thermal motor protection
• Power cable length: 10 m
• SCHUKO type plug

Control and Safety

• Integrated level switch type A
• Motor protection via internal contact
• Automatic operation according to water level

Certifications

• CE
• VDE
• LGABG
• EAC
• TUV
• UKCA
• SEPRO

Weight

• Net weight: 6.93 kg
• Gross weight: 7.63 kg

The UNILIFT KP.250.A.1 is a reliable, compact, and durable submersible pump, especially recommended for drainage applications where a robust, easy-to-install unit with consistent hydraulic performance is required.