Type: 9ST1. Immersion heaters with 48x48x50mm PA66 connection box and 1"BSPP thread

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

It has 2 heating elements dia. 8mm, 230V, connected in parallel. Serial connection of these elements allows using them in 115V.

These immersion heaters are the smallest with a connection box.

They have been designed with a built-in connection block for easier wiring. Their small size does not allow having a thermostat inside.

They exist in:

-5 standard power levels: 500W; 1kW; 1.5 kW; 2kW; 3kW.

-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, non-swiveling, 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″ BSPP (ISO 228).

Enclosure: 48 x 48 x 50 mm, black PA66 fiber glass reinforced.

Ingress protection class: IP54.

Cable gland: PG11, PA66. Nickel-plated brass on request.

Thermowell: not available on these types.

Heating elements connections: Built-in plastic connection block, 3 screw terminals, 2.5mm².

Not heating immersed zone: 50mm.

Surface load: standard 5 W/cm² or 10 W/cm², others values on request.

Voltage: 220-240V single phase (parallel wiring) or 115V (serial wiring).

Option: Only one heating element.


2D&3D Drawing

Main references

  5W/cm² 10W/cm²
Power 500w 1kW 1.5kW 1kW 2kW 3kW
Length (mm) 135 240 340 135 240 340
AISI 304 Reference 9ST1A310005B8130 9ST1A310010B8240 9ST1A310015B8340 9ST1A310010B8130 9ST1A310020B8240 9ST1A310030B8340
Incolloy 800 reference 9ST1A310005BK130 9ST1A310010BK240 9ST1A310015BK340 9ST1A310010BK130 9ST1A310020BK240 9ST1A310030BK340

References of accessories in option (not included in the product, must be ordered separately):

Other accessories and drawings: see last section of this catalogue.