1400°C Muffle Furnace with flap door, Tmax L 15/14/C550

1400°C Muffle Furnace with flap door, Tmax L 15/14/C550


1400°C Muffle Furnace with flap door, Tmax

Model: L 15/14/C550

Manufacturer: NABERTHERM



1400°C Muffle Furnace with flap door, Tmax

1400°C Muffle Furnace with flap door, Tmax L 15/14/C550

These models stand out for their excellent workmanship, advanced and attractive design, and high level of reliability. Heating elements on support tubes radiating freely into the furnace chamber provide for particularly short heating times and a maximum temperature of 1400 °C. These muffle furnaces are a good alternative to the familiar L(T) ../12 series when higher application temperatures are needed.

Standard Equipment

  • Tmax 1400 °C
  • Heating from two sides
  • Heating elements on support tubes ensure free heat radiation and a long service life
  • Dual shell housing made of textured stainless steel sheets with additional fan cooling for low surface temperature
  • Exclusive use of insulation materials without categorization according to EC Regulation No. 1272/2008 (CLP)
  • Adjustable air inlet integrated in door
  • Exhaust air outlet in rear wall of furnace
  • Controller B510 (5 programs with each 4 segments)
  • Solid state relays provide for lownoise operation
  • Defined application within the constraints of the operating instructions
  • NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive

Additional Equipment

  • Chimney, chimney with fan or catalytic converter
  • Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
  • Protective gas connection to purge with non-flammable protective or reaction gases (not available in combination with chimney, chimney with fan or catalytic converter), not gas tight
  • Manual or automatic gas supply system
  • Process control and documentation via VCD software package for monitoring, documentation and control.

Additional information


L-154U4ON11, L-154U4ON11GT, L-154U4ON11G, L-154U4ON11TZ, L-154U4ON11T, L-154U4ON11Z, L-154U4ON11Z1, L-154U4ON11TZ1, L-154U4ON11GTZ, L-154U4ON11GTZ1, L-154U4ON11GZ, L-154U4ON11GZ1

Model Tmax Inner dimensions in mm Volume Outer dimensions2 in mm Temperature uniformity of +/− 5K in the empty workspace5 Connected load Electrical Weight Heating time
in °C1 w d h in l W D H3 w d h in kW connection* in kg in min4
L, LT 5/14 1400 200 170 130 5 490 450 580+320 170 120 80 2.4 1-phase 42 50
L, LT 9/14 1400 250 250 170 9 530 525 630+350 180 190 120 3.2 1-phase 55 50
L, LT 15/14 1400 250 350 170 15 530 625 630+350 180 290 120 3.2 1-phase 63 70
1Recommended working temperature for processes with longer dwell times is 1300 °C
2External dimensions vary when furnace is equipped with additional equipment. Dimensions on request.
3Including opened lift door
4Heating time of the empty and closed furnace up to Tmax −100 K (connected to 230 V 1/N/PE)
5Temperature uniformity of +/− 5 K with closed fresh-air inlet in empty work space according to DIN 17052-1 at working temperatures above 800 °C
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