Leo 1.1KW 400V Submersible Borehole Motor Only » Buy online now for only R 2,782.69 incl. VAT

The Leo 4" Oil Cooling Submersible Motor is a premium, oil-filled borehole motor from Leo Pump — a global leader in fluid solutions with over 30 years of manufacturing excellence, serving 160+ countries worldwide. Built to IEC34-1 and CE standards, this motor drives any 4" borehole or tubewell pump with exceptional reliability and efficiency. Featuring stainless steel 304 construction, IP68 protection, and a NEMA-compliant mounting flange, it is engineered for continuous-duty deep-well water extraction at depths up to 100 metres.

Characters

• Conforms to international standard IEC34-1 and CE — fully enclosed asynchronous motor with squirrel cage rotor.
• Superior-grade silicon steel laminations for stator and rotor; windings of EC grade pure copper conductors for maximum electrical efficiency.
• Outer shell, shaft and bottom manufactured from stainless steel 304 for outstanding corrosion resistance.
• Brass alloy, electrophoretic cast-iron or stainless steel 304 upper bracket.
• Swedish angular contact ball bearings on both sides of the rotor for smooth running and high thrust-load capacity.
• High-performance Italian mechanical seal prevents bore water ingress into the motor.
• Pressure automatic adjusting device made of oil-proof and waterproof reformed butyl rubber.
• Pre-filled with high-grade, eco-friendly food-grade oil — safe for potable water applications.
• Flange connector conforms to NEMA (USA National Electrical Manufacturing Association) standard.
• Lacquer-coated wire conforms to USA standard NEMA MW37-C.
• Rewindable motor design for extended service life and cost-effective field repairability.
• Continuous duty rating: S1 — manufactured under Leo’s CNAS-certified quality testing standards.

Properties

• Power: Single-phase: 0.37kW–5.5kW  |  Three-phase: 0.55kW–9.2kW
• Voltage: Single-phase: 220/230V (−6% +10%) 50Hz  |  Three-phase: 400V ±10% 50Hz
• Starting method: Single-phase — CSCR/CSR  |  Three-phase — Direct On Line (DOL)
• Direction of rotation: Anti-clockwise (viewed from shaft end)
• Thrust load: 1500N (0.37kW–0.75kW)  /  2500N (1.1kW–2.2kW)  /  4500N (3.0kW–9.2kW)
• Degree of protection: IP68
• Insulation: Class F (155°C)
• Duty type: S1 (continuous)
• Max. ambient temperature: 35°C
• Minimum cooling flow along the motor: 0.15 m/s (8 cm/sec)
• Water pH: 6.5–8.0
• Maximum starts per hour: 20 times
• Maximum submerged depth: 150 metres
• Vertical or horizontal mounting position up to 2.2kW
• Motor protection by temperature-compensated thermal relay and extra-quick trip overload
• Overload trip time: <10 seconds (5× rating current)
• Oil lubricated — operates both vertical and inclined

Performance

• Max. immersion: 150m
• Max. water temperature: +35°C
• Max. chlorine content: 400mg/L
• pH Value: 6.5–8.0
• Max. solid content: 0.1%
• Max. re-start frequency: 30 times/hour
• Voltage variation: within 10%

Features

• Oil filled motor for 4" Borehole Pumps — compatible with all standard 4" borehole submersible pump sets.
• Mounting flange in compliance with NEMA standards for universal pump compatibility.
• Rubber diaphragm inside — protects motor from high pressure and oil expansion caused by volume variation.
• Watertight cable prevents capillary action and protects against moisture ingress.
• Non-corrosive stainless steel 304 construction for long service life in aggressive water conditions.
• High-efficiency silicon steel design reduces energy consumption and operating costs.
• Rewindable stator for cost-effective field repairs and extended motor life.
• Backed by Leo’s global service network in 160+ countries — parts and technical support readily available.
• Compatible with Leo single-phase start control box and digital auto-control box.

Applications

• Residential and domestic borehole water supply
• Small-scale and commercial irrigation systems
• Industrial process and utility water supply
• Municipal borehole water extraction
• Fountain, garden and sprinkler irrigation systems
• Solar-powered borehole pumping systems
• Protection Class: IP68  |  Insulation class: F
• Single Phase: 220V ± 10% 50Hz  |  Three phase: 380V ± 10% 50Hz
• Leo start control box & digital auto-control box available on request.