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

These heaters can be fitted with the same equipment than the 9ST5 type, (thermostats, limiters, pilot lights etc ..), but their plastic enclosure is more convenient for corrosive surrounding. 

They exist in:

– 6 standard power levels: 1 kW – 2 kW – 3 kW – 4 kW – 6 kW- 8kW.

– 4 types of standard fittings: 1 “1/4; 1″1/2; M45x2; 2”

Heater tube material: 8mm dia. AISI 304 or Incolloy 800 (AISI 316; AISI 321; Incolloy 825 on request). 10mm dia. heating elements on model with 2” fitting.

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″1/2 BSPP (ISO 228); M45x2; 2″

Enclosure: Dia. 100mm x 100 mm, black PA66 fiberglass reinforced. Silicone foam gasket. Stainless steel cover screws with locking nuts

Adjustment range: 30-90°C (85-195°F)

Ingress protection class: Water and dust: IP65; shock resistance: IK 8 (with metal cable glands and M25 metal plug).

Cable glands: M20, PA66. Nickel-plated brass on request.

Thermowell: In standard one thermowell in AISI304, dia.8 x 7 mm, 135mm length.

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

Models with thermostats have a built in connection block, 3 x 2.5mm² for single phase units and 5 x 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 5 W/cm² or 10 W/cm², other values on request.

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

Standard options:

-Thermostat knob accessible under the cover by a M25 removable plug, adjustable from 30°C to 90°C (85-195°F). 230V single phase thermostat for power up to 3 kW. 3 phase thermostat for 4kW, 6kW and 8kW models.

Variants on request:

– 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.

– Thermostat with external knob.

– One or two pilot lights and a power cord.

Electric Wiring