Series ILD In Line Tubular Air Duct Heaters feature Incoloy® 840 elements, painted steel frame, NEMA 1 terminal enclosure, and replaceable element design.

Inline duct heater

Features:

  • 26 watts per sq. inch on sheath
  • Incoloy 840 elements – 1700°F max. sheath temperature
  • Nichrome A resistance wire
  • Recompacted bends
  • NEMA 1 terminal enclosure
  • Replaceable element design
  • Painted steel frame
Recommended Operating Conditions
Air Speed
(ft. per second)
Maximum
Operating Temp.
4
600°F
9
650°F
16
750°F
Air Duct Heater Series ILD Tubular
Volts
3-Phase
#
Circuits
KW
A
B
D
#
Elems.
Wt.
(lbs.)
Catalog #
240
480
1
1
6
10 34
15 78
11 12
9
30
ILD9-6-3
ILD9-6-5
240
480
1
1
12
15 38
18 12
14 18
12
40
ILD12-12-3
ILD12-12-5
240
480
1
1
15
15 38
21 58
17 14
12
45
ILD12-15-3
ILD12-15-5
240
480
1
1
20
20 18
21 58
17 14
18
50
ILD18-20-3
ILD18-20-5
240
480
1
1
25
20 18
26 18
21 34
18
60
ILD18-25-3
ILD18-25-5
240
480
2
1
30
29 12
21 58
17 14
24
70
ILD24-30-3
ILD24-30-5
240
480
2
1
40
29 12
27 38
23
24
85
ILD24-40-3
ILD24-40-5
240
480
4
2
50
29 12
33 18
28 34
24
105
ILD24-50-3
ILD24-50-5