Model No. STH-741-21-SS: 750W @ 240V 1-1/2" Wide X 21" Length Stainless Steel Channel Strip Heaters With Mounting Tabs and (2) #10-32 or #10-24 Screw Terminals Offset (Diagonal) At One End

Therm Coil Drawing Number: 394A-2001-005

Model Number: STH-741-21-SS

General Product Description

Channel Strip heaters are most commonly used in the surface heating of tanks and in industrial ovens as the heat source via flat-surface mounting and have hundreds of commercial and industrial applications. 

Channel strip heaters differ from regular strip heaters in that their housing is constructed from a singular piece of rectangular tubing which makes them moisture-resistant.

• Whenever the voltage to ground exceeds 300V, secondary insulators must be used.
• All strip heaters may be used at voltages lower than rated for reduced wattage.
• NOTE: For Units With Mounting Tabs: When supported by mounting tabs, the terminal end should be secured firmly. The opposite end should be loose to allow for thermal expansion.

Series Description

• 304 Stainless Steel Sheath: Superior corrosion protection for long life and clean appearance.  Suitable for applications where the sheath temperature does not exceed 1200°F MAX.
• Moisture-Resistant Housing: this channel strip heater's housing is comprised of a stainless steel rectangular tubing and is moisture-resistant.
• Mounting Tabs
• (2x) At One End & Offset (Diagonal) Positioning: #10-32 or #10-24 Screw Terminals
• 1-1/2" Width x 21" Length: Total Length Is (A) DIM. On Diagram
• Mounting Hole Center-to-Center: 1" Less Than Total Length
• 750 Watts
• 240 Volt

Model-Specific Cross References

• Wellman SS2352, Chromalox OT-2107, OT2107, 129947, Vulcan OS1421-750B, & Watlow SGA1J21AO4.