Onga Tankbuddy OTB330A 0.65kW Submersible Pump with Automatic Float Switch (Max 90LPM/340kPa)

The Onga Tankbuddy OTB330A is a compact and reliable submersible pressure pump designed specifically for rainwater harvesting systems and treated water pump-out chambers. Built with an optimised multistage hydraulic system, the OTB330A delivers strong, consistent pressure while maintaining efficient energy consumption — making it ideal for automatic rainwater and water transfer applications.

This automatic model features an integrated float switch, allowing the pump to start and stop automatically based on water level. It is particularly suited for sump pits, pump-out chambers, and tank applications where hands-free operation is required. The robust aluminium die-cast and stainless steel pump body provides superior corrosion resistance and long service life in submerged conditions.

According to the manufacturer’s Tankbuddy Series technical data sheet the OTB330 platform delivers up to 33 metres of head and 5600 L/h flow capacity. The OTB330A combines this performance with automatic float control for reliable unattended operation.

APPLICATIONS

• Automatic sump and pump-out chambers
• Rainwater tank transfer systems
• Stormwater pits
• Treated water discharge
• Light irrigation and water reuse systems

FEATURES

• 0.65kW (650W) absorbed power
• Automatic integrated float switch for hands-free operation
• Multistage hydraulic design for improved efficiency
• Maximum flow up to 90LPM (model-rated)
• Maximum pressure up to 340kPa
• Aluminium die-casting and stainless steel pump body
• Mechanical seal for enhanced durability
• New generation hydraulics for higher efficiency
• Inbuilt thermal overload protection
• Fully insulated cable connection chamber
• Handles clean water with suspended solids up to 2mm

SPECIFICATIONS

• Model: OTB330A (Float Switch Model)
• Power (P1): 650W
• Voltage: 230V / 50Hz
• Maximum Head: 33m (3.3 bar)
• Maximum Flow Rate: Up to 5600 L/h (84–90 LPM range)
• Number of Impellers: 3
• Maximum Fluid Temperature: 40°C
• Maximum Immersion Depth: 7m
• Minimum Operating Space: 500mm diameter
• Pump Outlet: 1¼”
• Power Cable: 10m H07 RN8-F with ANZ plug
• Accessories Included: Adjustable hose connector for Ø15mm, 19mm and 25mm hoses