Tempco Mica Insulated Strip Heaters
Specially treated rust-resistant steel sheath casing provides physical strength, high emissivity and good thermal conductivity for sheath temperatures up to 900°F (480°C). For corrosive atmospheres and/or sheath temperatures up to 1200°F (650°C), stainless steel sheath is available. Specially selected mica grade and thickness is used to insulate the windings, providing excellent thermal conductivity and dielectric strength. A nickel-chrome resistance ribbon wire size is properly engineered to achieve the best combination of wire gauge and spacing between turns, thereby providing the lowest winding temperature possible. The ribbon wire is wound on a specially selected Mica Strip, providing even heat distribution for maximum heater life
Eagle Sensors & Controls, Division of Excel Automation LLC, is an authorized Tempco distributor. Contact us for sales & technical support for Tempco heaters, Tempco sensors, Tempco temperature controllers, Tempco process heating systems & all other Tempco products.
Construction Styles
Mica Insulated with Mounting Tabs
Mica Insulated without Mounting Tabs
Electrical Terminations
Type B: Button Terminals at one end
Low-profile 10-32 button terminals with binding head screws. Same location and minimum width requirements as types T1, T2 and T3. 6-32 threads available.
Type B1: Terminals at opposite ends (see T1)
Type B2: Terminals same end (see T2)
Type B3: Terminals same end (shown)
Type L1: Flexible Lead Wires at Top
Flexible lead wire exiting from the top through a brass eyelet. 10″ long leads standard; if longer leads are required, specify.
Minimum Width required is 7/8″.
Type L2: Flexible Lead Wire at Heater End
Flexible lead wire exiting same end. 10″ long leads standard; if longer leads are required, specify.
Minimum Width required is 1-1/8″.
Type L3: Flexible Lead Wire at Each End
Flexible lead wire exiting at opposite ends. 10″ long leads standard; if longer leads are required, specify.
Minimum Width required is 3/4″.
Type R1: Armor Cable at Top
Armor cable provides far superior protection to lead wires where abrasion is a constant problem. Available with two- or three-prong plugs. 10″ of armor cable over 12″ leads is standard. If longer cable, leads or plugs are required, specify.
Minimum Width required is 1″.
Type R1A: Galvanized cable, crimped
Type R1B: Stainless Steel cable, crimped
Type R1C: Galvanized cable, tack welded
Type R1D: Stainless Steel cable, tack welded
Type R1E: Galvanized cable, full silver brazing
Type R1F: Stainless Steel, full silver brazing
Type R2: Right-Angle Armor Cable at Top
Right-angle armor cable can be positioned in any direction. 10″ of armor cable over 12″ leads is standard. If longer leads are required, specify.
Minimum Width required is 1-1/4″.
Type R2A: Galvanized cable, crimped
Type R2B: Stainless Steel cable, crimped
Type R2C: Plain leads, no cable
Type T1: Screw Terminals at each end
Screw terminals at opposite ends.
Minimum Width required is 7/8″
Type T2: Screw Terminals at one end
Screw terminals tandem at one end.
Minimum Width required is 7/8″
Type T3: Screw Terminals at one end
Screw terminals parallel at one end.
Minimum Width required is 2″
Type W1: Wire Braid at Top
Wire braid leads offer sharp bending not possible with armor cable. 10″ of wire braid over 12″ leads is standard. If longer braid or leads are required, specify.
Minimum Width required is 7/8″.
Type W2: Wire Braid at Heater End
Flexible stainless steel braided lead wires exiting at same end. 10″ stainless steel braid over 12″ leads is standard. If longer braid or leads are required, specify.
Minimum Width required is 1-1/8″.
Type W3: Wire Braid at Each End
Flexible stainless steel braided lead wires exiting at opposite ends. 10″ stainless steel braid over 12″ leads is standard. If longer braid or leads are required, specify.
Minimum Width required is 3/4″.
Termination Options
Igloo Ceramic Terminal Covers
Igloo ceramic terminal covers consist of two ceramic parts. With a tight-fitting cap and a solid base, an Igloo cover will fully insulate any standard 8-32 or 10-32 terminal lug used for electrical wiring hookup. Igloo covers can be assembled onto any standard mica strips with 10-32 screw terminals. Igloo covers are available in 3 different styles: single port, double port in-line and double port 90°.
Type C: Terminal Box (General Purpose)
Terminal box has one 1/2″ trade size knockout (actual diameter 7/8″) for ease of wiring. It provides excellent protection against exposed terminals. Boxes can be prewired with armor cable or wire braid.
Type CA: Box only
Type CB: Box with galvanized cable
Type CC: Box with Stainless Steel cable
Type CD: Box with wire braid
Type P: Quick Disconnect Plugs
High-Temperature quick-disconnect plug. Available on 7/8″ widths (depending on termination configuration) and wider with cup and plug assembly or just cup.
Type P1Q shown with 90° plug and galvanized armor cable. Other options available. Consult Tempco.
Additional Options
Butt Case
Recommended for heating applications where strip heater will be placed in a milled slot between two steel plates.
Cross Section formed
Strip Heaters can be formed on their cross section for pipe heating applications. 2″ minimum width required. Specify diameter of pipe on which heaters are to be mounted.
Disc Heaters
When ordering Disc Heaters, specify outside diameter, electrical ratings, and termination type. If mounting holes are required, specify location and hole size.
Distributed Wattage
A mica strip heater can be designed with varying heat profile along the length for uneven heat distribution
Four Sides Closed
Mica Strip Heaters can be closed on all four sides to reduce contamination from getting inside the heater. Recommended on all strip heaters over 2-1/2″ in width.
Irregular Shape
Mica Strip Heaters can be made into any practical shape and electrical rating. We welcome your inquires.
Open Element
This economical heater design without the metal case is commonly used in laminating machines. The heater assembly can be suspended or sandwiched between non-metallic machine parts, eliminating the need for additional and expensive metal cases.
Pressure Plate
Strip Heaters can be made with built-in pressure plate to add rigidity and minimize warping of the heater. Standard plate thickness is 1/8″. Specify plate thickness and choice of mounting method 1, Built-In Pressure Plate, or mounting method 2, Separate Pressure Plate.
Ring Heaters
When ordering Ring Heaters, specify inside and outside diameters, electrical ratings, and termination type. If mounting holes are required, specify location and hole size.
Sinuated Element
Sinuated (Serpentine) wound coil design is used for low temperature and low watt density applications within the 3-10 amp range.
Agency Approvals (if required)
CSA Standard
Channel Strip and Finned Channel Strip Heaters have been certified as Recognized Components by Underwriters Laboratories (File Number E65652) under CCN KSOT2/8 to meet UL standard 499.
This file specifies the end use limitations and conditions of acceptability for the use of this type of heater. For additional information consult Tempco.
Mica Strip heaters are UL recognized and CSA certified in many design variations.
Tempco’s UL file number is E65652 and CSA file number is 043099.
UL Standard
Channel Strip and Finned Channel Strip Heaters have been certified as Recognized Components by Underwriters Laboratories (File Number E65652) under CCN KSOT2/8 to meet UL standard 499.
This file specifies the end use limitations and conditions of acceptability for the use of this type of heater. For additional information consult Tempco.
Mica Strip heaters are UL recognized and CSA certified in many design variations.
Tempco’s UL file number is E65652 and CSA file number is 043099.