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Main applications: Industrial liquid heating, hot water circuits, containers and buffer tanks.

These heaters with aluminum enclosure are designed for industrial applications of medium power in three-phase, which require the use of contactors. They can receive one power relay, 3 poles 32A resistive. They exist only with thermostat temperature control. The enclosure lid may be transparent polycarbonate or aluminum. They are equipped with a device that allows adjusting the enclosure position after tightening of the fitting.

The enclosure has a 80mm offset to go through thick thermal insulation.

They can be made in:
- 6 standard power levels: 6kW; 9kW; 12kW; 15kW; 18kW; 21kW.

- 3 types of standard fittings with dia. 10mm heating elements: 2", 2"1/2 and M77x2
- 2 types of standard fittings with dia. 12mm heating elements: 2"1/2; M77x2
- 2 types of surface load density: 5W/cm² and 10W/cm². See technical introduction to optimize the surface load.

Heater tube material: 3 heating elements, dia.10mm or 12mm, AISI 304 or Incolloy 800 (AISI 316; AISI 321; Incolloy 825 on request).

Fitting material: brass, swiveling on housing, brazed on tubes. Supplied without gasket and without nut. See accessories below.

Thread:
- Dia. 10mm heating elements: 2", 2"1/2 and M77x2
- Dia. 12mm heating elements: 2"1/2; M77x2

Temperature control:
Mechanical thermostat, temperature range 30-90°C (85-195°F). Other ranges available.

Enclosure: Extremely robust,die-cast aluminum, 3mm wall thickness. Silicone foam gasket. Stainless steel cover screws with locking nuts. Gray epoxy paint RAL7035. Protected against galvanic corrosion. Designed for outdoor installation, IP65 and IK10. It also includes:

- A fuse to protect internal circuits
- An illuminated on- off switch
- A pilot light for power supply and a pilot light for power output.

There are 2 models of covers:
- A PA66 cover with a polycarbonate transparent window allowing access to the settings. This window can be secured with seals. This case also includes a separate lid, with independent seals, providing access to electrical connections. In models with failsafe manual reset limiter, reset can be accessed after opening the window.

- An aluminum cover. This model provides access to settings only after removing the cover. It is convenient for industrial applications that do not request frequent changes in settings.

Cable glands: One M25, PA66, and one more hole for M25, closed by a plastic cap.

Thermowell: in standard two thermowells in AISI304, dia.8 × 7mm.

Electric connections:
Built-in terminal block, with 6 terminals 10mm² and 2 terminals 2.5mm².

This terminal block is provided with a strap between terminals 1 and 2. By removing this strap, it is possible to connect an additional safety device, a remote control, or a timer.

Support grid: 1 grid AISI 304 for lengths from 400 to 600mm, 2 grids above.

Not heating immersed zone: 50mm.

Surface load: Standard 5W/cm² or 10W/cm², other values on request.

Voltage: 380-400V, three phases with neutral only.

Standard options:
Plastic cover with transparent polycarbonate window.

Aluminum cover.

Variants on request:
- 4-40°C (40-105°F) adjustable thermostat, manual reset at 60°C (140°F).

- 0-60°C (32-140°F), adjustable thermostat, manual reset at 80°C (176°F).

- 30-110°C (85-230°F) adjustable thermostat, manual reset at 130°C (266°F).

- Thermal cut out inside a thermowell.

It is also possible to produce models with digital electronic control. Ask our commercial department.