Tubular Heaters – Terminal Design

 

Fig. 1
10-32 Cold rolled steel threaded stud. Standard terminal configuration supplied on .430/.437 and .475/.490 and .625 diameters.*
Fig. 2
8-32 Nickel plated steel welded stud. Standard terminal configuration supplied on .375, .312, .250 and .210 diameter. 10-32 Stud available.*
Fig. 3
Flag Terminal, projection welded.
Fig. 4
Flag terminal, side projection welded.
Fig. 5
Right angle Flag terminal, projection welded.
Fig. 6
Quick – connect, projection welded.

*Stainless steel terminals, other thread sizes and thread lengths available.

Fig. 7
Quick-connect, projection welded.
Fig. 8
Lead wire. (Specify length-12″ standard.)
Fig. 9
Epoxy seal: Maximum temperature at seal – 265°F/130°C.** Epoxylite seal – for temperatures to 600°F/315°C. Ceramic insulator would not be provided on Figures 2-7.
Fig. 10
Rubber Mold: Maximum temperature at Mold – 220°F/105°C.
Sheath Diameter A B
.250 7/16 1-3/4
.312 7/16 1-3/4
.430 3/4 2-1/4
Fig. 11
Hermetic Seal: Max. temp. at seal – 1000°F/538°C.
.
Heater
Dia.
A B C Thread
Size
Max.
Amps
.250 1.688 .406 .280 8-32 15
.312 1.875 .406 .350 10-32 30
.375 1.875 .406 .380 10-32 30
.430 2.125 .656 .480 1/4-28 40
.475 2.125 .656 .530 1/4-28 40

**Other materials available-consult BigChief.