12kW Immersion Heater – Single & Three Phase

Product Overview

This 12kW immersion heater provides industrial liquid heating for tanks, vessels and process systems, with compatibility for 230V single-phase or 400V three-phase supplies when connected in accordance with the manufacturer's instructions.

A G1½" stainless steel threaded fitting and Incoloy 800 heating elements provide a robust construction for demanding heating applications. The 850mm immersion depth suits deep tanks and vessels, while the integrated pilot light provides a visible operating indication.

Technical Specifications

• Power output: 12kW, comprising 3 × 4000W heating elements.
• Supply: 230V single phase / 400V three phase.
• Immersion depth: 850mm.
• Thread connection: G1½" stainless steel.
• Element material: Incoloy 800, resistant to oxidation and scaling.
• Temperature control: three-pole combination thermostats, 30–70°C.
• Terminal box: 100 × 100mm plastic enclosure, IP45 rated.
• Integrated pilot light.
• Cable entry: M20 × 1.5 cable gland.

Typical Applications

Suitable for industrial process tanks, buffer vessels, calorifiers, water treatment systems, IBC containers and deep storage vessels. Chemical and wash-tank applications require confirmation that the liquid is compatible with the heater materials.

Installation Notes

• Installation and connection must be carried out by a qualified electrician following the manufacturer's wiring instructions.
• The electrician must confirm the connection arrangement, neutral requirements, cable sizing, switching and circuit protection for the selected supply and full 12kW load. Do not assume that cabling specified for the separate 230V three-phase model is suitable for this version.
• Confirm the supplied cable specification before installation.
• Fully submerge the heating elements before energising.
• Combination thermostats provide operational control and safety cut-out features.
• Check fluid compatibility with Incoloy 800 before use.

Use our liquid heating energy calculators to help assess your heating requirements.