TUTCO DUCT

Open Coil Heaters

As the world’s largest manufacturer of open coil heaters, Tutco has gained a reputation for producing products that are second to none. We design and build each product to perform with incredible reliability. TUTCO’s heating design innovations are made available with the most advanced materials having the highest performance level possible. To ensure performance every product meets the most rigorous quality standards. Those standards as applied by U.L. and C.S.A. regulations. Product applications undergo testing in our state of the art Research & Development Lab where years of experience combined with technical expertise allow for every design to be reviewed for functional integrity, adherence to industry standards and the highest quality product to support innovation in heating design. (Visit the TUTCO Difference Page for more information)

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APPLICATIONS

FURNACES

Heat Pumps
Central Heating/AC Units

CLOTHES DRYERS

Residential
Commercial
Mini-Dryers

PTAC

Air Conditioning

CLOTHES DRYERS

Commercial
Industrial

UNITARY

Room AC/Heating Units
Fan Heating Coils

MISCELLANEOUS

Electric Fireplaces
Lab Ovens
Fast Food Ovens

COILS

SPECIFICATIONS

Technology leader NXT Wire
High Quality Nickel/Chromium resistance wire
Wire Grades C (60%Ni 15%Cr 25%Fe), A (80%Ni 20%Cr)
Available Gauges 14 – 28
Coil Diameters .250 to .875
Consistent Pitch Windings (Distance between Helixes)
Solutions provided to best fit design objectives utilizing various coil return configurations (Large Diameter Coils Only)

SMALL DIAMETER COILS

LARGE DIAMETER COILS

COIL RETURNS

INSULATORS

TERMINATION STYLES

Two proven methods of heating element terminations at Tutco insure a sturdy and electrically sound connection. The methods are compatible with ring, slotted and female terminals.

1. The resistance wire is mechanically staked and heli-arc welded to an appropriately sized slotted-head machine screw. It is then mounted with anti-rotational insulators to prevent movement during installations and operation.

Anti-Rotation Insulators

Staked and Heli-Arc Weld

2. The resistance wire is mechanically crimped to a 1/4″ of 5/16″ spade terminal which is then mounted in either a single or double ceramic insulator block. Pioneered by TUTCO in the early 1980’s, it has proven both reliable and cost effective for applications of 25 amps or less.