Immersion Heater 9kW 400V – G1½" Stainless Steel, Incoloy 800 Elements, Thermostats, 700mm Immersion Depth

Product Overview

This 9kW three-phase immersion heater is designed for high-duty industrial liquid heating applications where reliability and precise temperature control are essential. The heater features a G1½" stainless steel threaded fitting combined with Incoloy 800 heating elements, providing excellent resistance to oxidation, scaling, and high operating temperatures.

A 700mm immersion depth makes this unit suitable for deep tanks, vessels, and process systems. The heater is supplied with a 100mm × 100mm plastic terminal box housing three-pole combination control thermostats and an integrated pilot light, offering clear visual indication and safe, controlled operation.

The assembly is completed with an M20 × 1.5 cable gland and a 2-metre pre-wired 4 × 2.5mm² cable, ensuring straightforward installation in three-phase systems.

Key Features

• Power Output: 9kW (3 × 3000W heating elements)

• Supply Voltage: 400V AC, three-phase

• Immersion Depth: 700mm

• 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	9000W (3 × 3000W)
Voltage	400V AC
Phase	Three-Phase
Immersion Depth	700mm
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	100mm × 100mm, IP65
Cable Gland	M20 × 1.5
Cable Length	2 metres
Cable Size	4 × 2.5mm²
Mounting Type	Screw-in immersion

Typical Applications

• Industrial process tanks

• Buffer vessels and calorifiers

• Chemical and wash tanks

• Water treatment systems

• Large storage tanks and vessels

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 for 9kW three-phase load

• Ensure fluid compatibility with Incoloy 800 heating elements