Immersion Heater 12kW 400V – G1½" Stainless Steel, Incoloy 800 Elements, Thermostats, 850mm Immersion Depth

Product Overview

This 12kW three-phase immersion heater is designed for high-demand industrial liquid heating applications. It features a G1½" stainless steel threaded fitting with Incoloy 800 heating elements, delivering excellent resistance to oxidation, scaling, and high-temperature operation for long-lasting performance.

With an 850mm immersion depth, this heater is ideal for deep tanks, vessels, and process systems requiring rapid heat-up. The 100mm × 100mm plastic terminal box houses three-pole combination control thermostats and an integrated pilot light, allowing precise temperature control and clear visual status indication.

The unit is completed with an M20 × 1.5 cable gland and 2-metre pre-wired 4 × 2.5mm² cable, ready for safe three-phase installation.

Key Features

• Power Output: 12kW (3 × 4000W heating elements)

• Supply Voltage: 400V AC, three-phase

• Immersion Depth: 850mm

• Thread Connection: G1½" stainless steel fitting

• Heating Element Material: Incoloy 800

• Temperature Control: Three-pole combination 30-70 deg C

• Visual Status: Integrated pilot light

• Terminal Enclosure: IP45 100mm × 100mm plastic box

• Cable Entry: M20 × 1.5 cable gland

• Pre-Wired Cable: 2 metres, 4 × 2.5mm²

• Heavy-Duty Design: Suitable for continuous industrial operation

Technical Specification

Specification	Details
Power Rating	12kW (3 × 4000W)
Voltage	400V AC
Phase	Three-Phase
Immersion Depth	850mm
Thread Size	G1½" BSP
Fitting Material	Stainless Steel
Element Material	Incoloy 800
Control	Three-Pole Combination 30-70 deg C
Pilot Light	Yes
Terminal Box Size/Rating	100mm × 100mm, IP65
Cable Gland	M20 × 1.5
Cable Length	2 metres
Cable Size	4 × 2.5mm²
Mounting Type	Screw-in immersion

Typical Applications

• Large industrial process tanks

• Buffer vessels and calorifiers

• Chemical and wash tanks

• Water treatment and storage systems

• Deep storage or IBC containers

Installation Notes

• Installation must be carried out by a qualified electrician or competent engineer

• Heater must be fully submerged before energising

• Combination thermostats provide operational temperature control and safety cut-out

• Verify supply protection and cabling are suitable for 12kW three-phase load

• Ensure fluid compatibility with Incoloy 800 heating elements