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  • NTL 401S

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  • Parameters
NTL 401S
Operating voltage230VAC or 120VAC
Heating elementPTC resistor - temperature limiting
Temperature safety cut-outto protect against overheating in case of fan failure, automatic reset
Heater bodyanodised extruded aluminium profile
Surface temperaturemax. +75°C
Axial fan, ball bearing

Airflow, free flow 45m³/h (50Hz) or 54m³/h (60Hz)

service life 50,000h at +25°C (+77°F)

Connectioninternal connection terminal 1.5mm² with strain relief, clamping torque 0.8Nm max.
Connection casingplastic according to UL94 V-0, black
Mountingclip for 35mm DIN rail, EN 60715
Fitting positionvertical airflow (air outlet up)
Operating/Storage temperature-45 to +70°C (-49 to +158°F)
Operating/Storage humiditymax. 90% RH (non-condensing)
Protection type/Protection classIP20 / I (earthed)
Noteother voltages on request

Art. No.Heating capacity²Operating voltageLength (L)Weight (approx.)
401S01150W230VAC, 50/60Hz182mm0.8kg
401S02250W230VAC, 50/60Hz182mm0.8kg
401S03300W230VAC, 50/60Hz222mm1.2kg
401S04400W230VAC, 50/60Hz222mm1.2kg
401S05150W120VAC, 50/60Hz182mm0.8kg
401S06250W120VAC, 50/60Hz182mm0.8kg
401S07300W120VAC, 50/60Hz222mm1.2kg
401S08400W120VAC, 50/60Hz222mm1.2kg

¹ at +20°C (+68°F) ambient temperature

  • Features

• Pressure clamp connectors

• Dynamic heating up

• Wide voltage range 

• Energy saving 

• Clip fixing, Quick installation

  • Structure Chart


  • Certification
  • Heater CE-EMC

    Heater CE-EMC

  • Heater CE-LVD

    Heater CE-LVD

  • Heater RoHS

    Heater RoHS

  • Heater NTL 401 Patent

    Heater NTL 401 Patent

  • Application

These heaters are used in enclosures where damage from condensation must be prevented, or where the temperature may not fall below a minimum value. The aluminium profile heater body design has a chimney effect and distributes the heat evenly. The heaters are designed for permanent operation. Pressure clamb connectors save time and simplify installation.

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