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

These heaters with that box size are the most used because they can receive many accessories such as thermostats, limiters, pilot lights etc.., with a relatively small footprint.

They exist in:
- 6 standard power levels: 1kW – 1.5kW - 2kW - 3kW - 4kW - 6kW.

- 3 types of standard fittings: 1"1/4; 1"1/2; M45x2.

- 2 types of surface load density: 5W/cm² and 10W/cm². See technical introduction to optimize the surface load. Heater tube material: 8mm dia. AISI 304 or Incolloy 800 (AISI 316; AISI 321; Incolloy 825 on request).

Fitting material: brass, swiveling on housing, brazed on tubes. (AISI 304 or AISI 316, TIG welded, or brazed, models are available on request). Supplied without gasket and without nut. See accessories below.

Thread: 1"1/4; 1"1/2BSPP (ISO 228); M45x2.

Temperature control: single pole or 3 pole thermostat, 30-90°C (85-195°F). Other temperature ranges in option.

Enclosure: 105 × 105 × 96mm, die-cast aluminum, 3mm wall thickness. Silicone foam gasket. Stainless steel cover screws with locking nuts, 2 inner earth terminals M4; Gray epoxy paint RAL7035. Protected against galvanic corrosion. Ingress protection class: Water and dust: IP65; shock resistance: IK 10 (with metal cable glands and M25 metal plug). Cable glands: M20, PA66. Nickel-plated brass on request.

Thermowell: in standard on thermowell in AISI304, dia.8 × 7mm, also for models supplied without thermostat.

Electrical connections: tubular heater terminals with stainless steel screw, nut and stainless steel washer. Switching straps on 3 phases models.

Models with thermostats have a built-in connection block, 3 × 2.5mm² for single phase units and 5 × 2.5mm² for 3 phases units. One more M4 grounding terminal available.

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: 220-240V single phase or three phases 380-400V (Star connection with neutral).

Standard options:
- 230V single phase thermostat for power up to 3kW. 3 phases thermostat for 4kW and 6kW models.

Variants on request:
- External thermostat knob, with waterproof shaft gasket.

- 4-40°C (40-105°F), 0-60°C (32-140°F), or 30-110°C (86-230°F) thermostat.

- Additional cable gland output for electronic control sensor.

- It is possible to deliver these devices with one or two pilot lights and a power cord.

- These heaters can be assembled with fittings having threads up to 2"1/2 or M77x200, and 10mm dia. heating tubes. Contact us for feasibility.