Combination of adjustable set point immersion heater thermostat and manual reset high limit, IP54 housing, 105x88x58.5mm

Control sub-assembly designed to be fitted directly on standard immersion heaters.

Power up to 3500W, 230V, single phase.

Housing raw material


Ingress protection

Contact Material

Electrical rating



Electrical life (cycles at rated value)

Measurement type

Sensing element

Capillary length (mm)

Temperature adjustment range (°C)

, ,

Manual reset temperature (°C)

, ,

Differential (°C)

Setting adjustment

Rod length (mm)

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Enclosure Type Operation Contact Measurement Ranges °C Models
IP54 Control Mechanical SPDT Immersion heater Y08




Main applications:

Control sub-assembly designed to be fitted directly on standard immersion heaters.

Power up to 3500W, 230V, single phase.

Housing: IP54, 105 x 88 x 84.5 mm, (Cap, accessories and cable gland not included), black PC-ABS, UL94V0. High impact and UV resistance.

Product including an adjustable temperature control thermostat and a fixed setting high limit manual reset thermostat. Manual reset has access from outside, by removing a cap.

Electrical input: one M20 cable glands.

Temperature Adjustment: Inside, with °C printed knob. (°F printed knobs available in option)

Sensing elements: Liquid filled bulbs, dia. 6mm , with output on backside, for mounting inside immersion heater pockets

Adjustment ranges: 0-60°C (32-140°F) ; 30- 90°C (85-195°F) ; 30-110°C (90-230°F)

Sensing elements output length (C): 500mm (standard) , other lengths from 150mm to 800mm available on request

Electrical connections:

  • Power supply (Neutral, Line, Ground), on 6mm² screw terminals.
  • Immersion heater: 3 wires, FEP 180°C insulated, 2.5mm², equipped with ring terminals, length 50mm on the immersion heater connection side, for direct connection on heating elements M4 terminals. (Neutral wire is blue color)
  • Pilot light (Option): can be connected by a strap on power supply, or on control thermostat output, or on safety thermostat output.

Mounting: by the backside extension, on the 50mm diameter hole, that can be used for immersion heaters with 1”1/2 thread or M45 thread, mounted by nut or by dia 56mm rotation ring (see fittings and accessories for immersion heaters in catalogue 2)

Control thermostat contact: Open on temperature rise contact (C-1) 16A(2.6) 250VAC

-Electrical life >100.000 cycles.

Manual reset thermostat contact: Fail safe, open by temperature rise; 16A (2,6) 250V alt.

Control thermostat and manual reset thermostat contacts are in serial on the Line supply of immersion heater.


  • Pilot light (230V)
  • Liftable adjustable high end adjustment on control
  • Outside access to the control thermostat adjustment (By removing a 40mm cap)
  • Thermal cut out for incorporation inside immersion heater pocket.
Cover options:

1: Manual reset cap.(Standard)

2: Outside adjustment cap, dia 40mm (Option)

3: Pilot light (Option

Set point adjustment options:

A: Mini dial adjustment (Option to be selected for outside adjustment with cap 2).

B: Soft-grip knob adjustment, (Standard).

C: Liftable adjustable high limit (Option)

Main references (with C=300mm)





Technical informations associated to this product

  • JPC Design concept of the Y0 types enclosures

    The design of the Y0 enclosures was made to provide a starting range with a particular selection of low cost solutions. The plastic used is PC-ABC compound, with or without fiberglass reinforcement.
  • Main properties of plastic raw materials used for enclosures

    The classic housings, with only 5 sides and a lid, require a long and costly layout, most of the time ignoring the application needs: security, fire resistance, water penetration, shocks, UV, temperature, etc.
  • Electrical protection classes

    The housings are designed to protect electrical equipment located inside. This protection must be considered in the electrical and environmental angles.)
  • Electrical contacts

    As numerous mechanisms exist, we decided not to distinguish on the basis of constructive technique, but according to their operation speed, which is the key element.