IBO KBFU 50-1.5 submersible sludge pump 400 V
The KBFU 50-1.5 is a three-phase sludge pump with a power rating of 1.5 kW, powered by 400 V, with a capacity of 750 l/min. The KBFU series is designed for continuous operation in extremely demanding environments such as construction sites, mines and quarries - anywhere the pumped medium contains sand, sludge and abrasive particles that damage standard centrifugal pumps.
Who it's for
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Construction companies with a three-phase distribution board - a 400 V power supply ensures more stable motor operation and lower starting current than a single-phase equivalent of the same power.
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Open-pit mines and quarries - the cast-iron body with a highly abrasion-resistant chromium alloy coating withstands intense wear from sand and aggregate.
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Drainage system installers - the high capacity of 750 l/min and compact dimensions make it easy to select and install the pump in collection pits.
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Municipal companies and technical services - three-phase power and continuous operation enable long-term dewatering without frequent monitoring.
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Plumbing and installation equipment wholesalers - the base model in the three-phase KBFU series adds proven equipment for customers with access to a 400 V power supply.
Applications
The KBFU series is designed to drain water from construction sites, mines and quarries - anywhere the pumped medium contains sand, sludge or fine aggregate that can damage standard centrifugal pumps. The hydraulic unit's durable cast-iron construction and impeller coated with a highly abrasion-resistant chromium alloy withstand demanding operating conditions, reducing the risk of unplanned downtime and service costs. The vertical outlet makes installation easier in narrow collection pits and confined excavations where operating space is limited.
A key element of the design is the cooling jacket surrounding the motor. This means the pump does not need to be fully submerged in the pumped medium to maintain a safe operating temperature - the motor is cooled through the jacket wall even when the water level in the excavation is very low. This is a significant advantage during the final stage of dewatering, when a standard pump without a jacket would have to be switched off. Thermal protection built into the motor winding provides an additional layer of protection against overheating during prolonged continuous operation.
Features of the KBFU 50-1.5 pump
- Suitable for pumping water containing sand: YES
- Cooling jacket: YES
- Minimum pumping level: X
- Discharge outlet: 2" threaded, vertical direction
- Thermal protection: YES (built into the motor winding)
- Float switch: NO
- Bearings: NSK (Japan)
- Operating mode: continuous
IBO – 24-month (2-year) manufacturer's warranty.
Dambat – a trusted manufacturer of pumps and water engineering equipment, certified for quality.
Frequently asked questions (FAQ) – KBFU 50-1.5 sludge pump
What is the difference between the KBFU 50-1.5 M and the KBFU 50-1.5?
Both models have the same 1.5 kW power rating, but differ in their power supply: the M model runs on 230 V (single-phase), while the T model runs on 400 V (three-phase). The three-phase version offers higher output—750 l/min compared with 420 l/min—and is recommended wherever a three-phase power supply is available.
How do I connect a discharge hose to the KBFU 50-1.5 pump?
The 2" discharge outlet is threaded, so the discharge hose can be connected with a clamp or quick-connect fitting, without specialist tools. The outlet faces vertically, making it easier to route the hose upward when installing the pump in a narrow trench or well.
What contaminants can the KBFU 50-1.5 handle?
The model is designed to pump water containing particles up to 5 mm in diameter, such as sand, sludge, and fine gravel. The impeller is coated with a highly abrasion-resistant chromium alloy, providing resistance to intensive wear.
Where can I buy the IBO KBFU 50-1.5 pump?
The pump is available from authorized Dambat dealers across Poland, at plumbing wholesalers, and in specialist technical stores. Dambat does not sell directly.
How long is the warranty on the KBFU 50-1.5?
IBO – 24-month (2-year) manufacturer's warranty. Warranty and post-warranty service is provided by Dambat, Adamów 50, Grodzisk Mazowiecki.
