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MDH SERIES Duct Heaters

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Watlow has developed a line of process air heaters offering improved performance and increased versatility in medium to low temperature applications.

The duct heaters are modular and consist of two parts. The first is a 6 kilowatts heater available in either 240 or 480 volts, single- or three-phase.

The second part of the heater consists of the electrical housing protecting each module’s termination area and a main flange that bolts into the user’s ductwork. The heater modules are installed in the housing and main flange via rectangular slots in the main flange. The range of modules that can be accommodated in various duct heater assemblies, range from 1-10 modules. A range of 6 to 60 kilowatts, in 6 kilowatt increments is achieved.

The new design of the modular duct heater offers increased reliability. The individual modules are removable through the housing of the assembly, which eliminates the need to pull the complete heater from the ductwork. This reduces downtime and costs because the heating elements can be replaced individually.

Performance improvements include quicker response time and reduced infiltration from the air stream being heated into the electrical enclosure.


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MDH Series Duct Heaters

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  Results 1 - 25 of 34 Unit of Measure: Imperial | Metric | Both  1 2 

Code No.

Item Name

Voltage

Watts

Phase

Dimension A

Dimension B

Dimension C

MDH6Sl0 MDH SERIES Duct Heaters 240 VAC 6 kW 1 6.50 in 2.50 in 5.75 in
MDH6S3 MDH SERIES Duct Heaters 240 VAC 6 kW 3 6.50 in 2.50 in 5.75 in
MDH6S11 MDH SERIES Duct Heaters 480 VAC 6 kW 1 6.50 in 2.50 in 5.75 in
MDH6S5 MDH SERIES Duct Heaters 480 VAC 6 kW 3 6.50 in 2.50 in 5.75 in
MDH12Sl0 MDH SERIES Duct Heaters 240 VAC 12 kW 1 8.50 in 4.75 in 7.75 in
MDH12S3 MDH SERIES Duct Heaters 240 VAC 12 kW 3 8.50 in 4.75 in 7.75 in
MDH12S11 MDH SERIES Duct Heaters 480 VAC 12 kW 1 8.50 in 4.75 in 7.75 in
MDH12S5 MDH SERIES Duct Heaters 480 VAC 12 kW 3 8.50 in 4.75 in 7.75 in
MDH18Sl0 MDH SERIES Duct Heaters 240 VAC 18 kW 1 10.50 in 7.00 in 9.75 in
MDH18S3 MDH SERIES Duct Heaters 240 VAC 18 kW 3 10.50 in 7.00 in 9.75 in
MDH18S11 MDH SERIES Duct Heaters 480 VAC 18 kW 1 10.50 in 7.00 in 9.75 in
MDH18S5 MDH SERIES Duct Heaters 480 VAC 18 kW 3 10.50 in 7.00 in 9.75 in
MDH24S10 MDH SERIES Duct Heaters 240 VAC 24 kW 1 12.50 in 9.25 in 11.75 in
MDH24S3 MDH SERIES Duct Heaters 240 VAC 24 kW 3 12.50 in 9.25 in 11.75 in
MDH24S11 MDH SERIES Duct Heaters 480 VAC 24 kW 1 12.50 in 9.25 in 11.75 in
MDH24S5 MDH SERIES Duct Heaters 480 VAC 24 kW 3 12.50 in 9.25 in 11.75 in
MDH30S3 MDH SERIES Duct Heaters 240 VAC 30 kW 3 15.75 in 11.50 in 15.00 in
MDH30S11 MDH SERIES Duct Heaters 480 VAC 30 kW 1 15.75 in 11.50 in 15.00 in
MDH30S5 MDH SERIES Duct Heaters 480 VAC 30 kW 3 15.75 in 11.50 in 15.00 in
MDH36S3 MDH SERIES Duct Heaters 240 VAC 36 kW 3 18.00 in 13.75 in 17.25 in
MDH36S11 MDH SERIES Duct Heaters 480 VAC 36 kW 1 18.00 in 13.75 in 17.25 in
MDH36S5 MDH SERIES Duct Heaters 480 VAC 36 kW 3 18.00 in 13.75 in 17.25 in
MDH42S3 MDH SERIES Duct Heaters 240 VAC 42 kW 3 20.25 in 16 in 19.50 in
MDH42S11 MDH SERIES Duct Heaters 480 VAC 42 kW 1 20.25 in 16 in 19.50 in
MDH42S5 MDH SERIES Duct Heaters 480 VAC 42 kW 3 20.25 in 16 in 19.50 in
  Results 1 - 25 of 34 1 2