A wide range of high quality controllers for various power applications

SmartGen HT40MA Suitable for various engine with (15~25)L displacement


Technical Parameters:
Rated Power    4000W
Rated Voltage        AC(190~277)V
Rated Current        16.7A
Engine Displacement(L)        13~25
Thermostat Set Point        Off: (40±3)ºC Reset: (25±5)ºC
Overheating Switch Range    Off: (95±4)ºC Manual Reset: (temperature below 80ºC)
Electrical Strength    AC 1.5kV 1min, ≤2.5mA
Insulating Resistance        ≥50MΩ
Inlet/Outlet Size    3/4″¬(φ19mm)
Max. Water Pressure    0.5MPa
Protection Level    IP54
Vibration Resistance    5~8)Hz; Amplitude±7.5mm; Triaxial (8~500)Hz; a=2g; Triaxial
Shock Resistance    Half-sine wave; apeak=50g; Triaxial
Case Dimensions(mm)    445*375*210
Weight(kg)    5.6

Product Overview:
HT40MA Water Heater enables wide application on various engine coolant pre-heating. It has fine cast aluminum enclosure and self-extinguishing engineering plastics end closure, easy and convenient to use.

If the ambient temperature is lower than 4ºC during cranking, engine coolant and lubricant may condense into solid state and lose their lubricating and cooling properties, which can damage the engine. Therefore, engine heater should be installed to ensure normal starting and running of the engine when the ambient temperature is lower than 4ºC.

The inner heating pipe and end cover both adopt stainless steel with high corrosion resistance. The heater has light indication function, which can indicate power and heating status. 3 kinds of heaters with different heating temperature are optional (Standard heater: 40ºC; 50ºC and 60ºC heaters are needed to be customized).

This product is suitable for various engines with (13~25) L displacement.


Fine cast aluminum enclosure, stainless steel inner pipes and sealed end closure;

Coolant temperature is controlled by thermostat which is installed within the heater. It has simple structure and high reliability;

Power, heating and overheat protection light indicators make it easy to observe the heater status;

Both of the two water inlets have one-way inlet valve and they sit on either side of the heater; Users can choose any one to use during installation;

Both of the two power line inlets are knock-off design; Users can choose suitable one to use according to the installation way. Waterproof joints (stuffing box) are provided;

There is a water drain valve with seal ring on the bottom of the heater so as to be used when needed;

Overheating thermostat provides the protection of dry heating and overheating;

Press Test key to test-run the unit when ambient temperature is over high;

This product can work normally at -40ºC temperature.

Why SmartGen?

  • More than 200,000 units yearly
  •  19 years of successful business
  • More than 50 offices worldwide
  • Almost 200 technology patents
  • ISO, GM and CCSR certificates
  • High quality and low prices
  •  Wide variety of generator parts


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