Series DM Tubular Air Duct Heaters feature Incoloy® 840 elements, stainless steel element support, stainless steel support rods, painted flange, NEMA 1 terminal enclosure, and replaceable element design.

Moderate temperature (750°F max.)

Features:

  • 20 watts per sq. inch on sheath
  • Incoloy 840 elements – 1700°F max. sheath temperature
  • Stainless steel element support
  • Stainless steel support rods
  • Painted steel flange
  • NEMA 1 terminal enclosure
  • Replaceable element design
  • Recompacted bends
  • 1″ insulation in terminal housing
Recommended Operating Conditions
Air Speed
(ft. per second)
Maximum
Operating Temp.
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16
750°F
air duct series dl dm tubular heater
Volts
3-Phase
#
Circuits
KW
A
B
C
D
E
G
Wt.
(lbs.)
#
Elems.
Catalog #
240
480
1
1
6
27 18
20 38
3 58
5 58
10
2 12
20
6
DM6-6-3
DM6-6-5
240
480
1
1
12
27 18
20 38
5 58
7 58
10
3 12
26
12
DM12-12-3
DM12-12-5
240
480
1
1
18
27 18
20 38
7 58
9 58
12
3
35
18
DM18-18-3
DM18-18-5
240
480
2
1
24
27 18
20 38
9 58
11 58
14
2 34
42
24
DM24-24-3
DM24-24-5
240
480
2
1
30
27 18
20 38
11 58
13 58
14
3 14
50
30
DM30-30-3
DM30-30-5
240
480
2
1
36
27 18
20 38
13 58
15 58
14
3 34
60
36
DM36-36-3
DM36-36-5
240
480
2
1
42
27 18
20 38
15 58
17 58
14
4 14
70
42
DM42-42-3
DM42-42-5
240
480
4
2
48
27 18
20 38
17 58
19 58
14
4 34
80
48
DM48-48-3
DM48-48-5
240
480
3
3
54
27 18
20 38
19 58
21 58
14
5 14
90
54
DM54-54-3
DM54-54-5
240
480
4
2
60
27 18
20 38
21 58
23 58
14
5 34
97
60
DM60-60-3
DM60-60-5