Electric Heater Onnline W-033, 1/2" connection, 600W, with thermostat, model GRBT

Onnline W-033 is an electric immersion heater designed for direct heating of liquids in small tanks and containers. The unit features a 1/2" threaded connection and a 600 W heating element with an integrated thermostat (GRBT) to maintain set temperatures. Its compact form factor allows installation in confined spaces where controlled, localized heating is required.

Advantages

The heater combines a moderate 600 W power rating with a built-in thermostat for precise temperature control, reducing the need for external regulation. The 1/2" connection provides compatibility with common threaded fittings, enabling quick and straightforward installation. The compact immersion design minimizes heat loss and concentrates heating where it is needed, while the integrated thermostat helps prevent overheating and reduces energy consumption during steady-state operation.

Suitable for

• Heating water and other low-viscosity liquids in small tanks and containers
• Temperature maintenance in laboratory baths and process vessels
• Domestic and light industrial applications requiring compact immersion heating

Key specifications

• Rated power: 600 W
• Connection type: 1/2" threaded immersion fitting
• Integrated thermostat: yes (GRBT)
• Application: direct immersion heating of liquids
• Form factor: compact tubular heating element

How to use

Install the heater into a compatible 1/2" threaded fitting on the tank or container, ensuring the heating element is fully immersed in the liquid before applying power. Connect the electrical supply according to local regulations and the device wiring requirements. Set the thermostat to the desired temperature and allow the unit to reach equilibrium; the built-in thermostat will cycle the heater to maintain the set temperature. Regularly inspect the element for scale or deposits and remove power before performing any maintenance.

Usage recommendations

Use the heater only in liquids compatible with its materials and within the intended temperature range. Ensure full immersion of the heating element during operation to avoid dry heating. Follow local electrical codes for wiring and grounding, and schedule periodic inspection for buildup or corrosion to preserve performance and safety.