LectraHeat cartridge heaters are designed for high watt densities (up to 300W per square inch). LectraHeat heaters are so highly compacted that they produce superior heat transfer and the dielectric and physical strength necessary for long heater life and outstanding performance. LectraHeat cartridge heaters are available in 3/8″, 1/2″, 5/8″, and 3/4″ with a large variety of lead configurations.
* Consult factory for metric sizes *
Construction Configurations
Leads
- Duraflex leads (rated 1022°F with silicone coating)
- Crimped (rated 1022°F with silicone coating)
- Right angle copper elbow
- Right angle fiberglass lead
- Right angle steel armor
- Right angle steel braid
- Stainless steel armor
- Stainless steel braid
- Straight copper elbow
Modifications
- Trim to length (sheath length trimmed to ± 1/8″)
- Distributed wattage
- Mounting flange (1″, 1 1/2″, & 2″)
- Internal thermocouple (types J or K)
- Thermocouple leads
- Silicone rubber sleeving (rated for 480°F)
- Ground wire
- Post terminals
- Strain relief
- Fiberglass sleeving (rated for 480°F)
- Cement end seal cap (rated for 2000°F)
Threaded Fittings (Single Ended)
| Heater Outside Diameter | Fitting Size |
|---|---|
| 3/8″ | 1/4″ NPT |
| 1/2″ | 3/8″ NPT |
| 5/8″ | 1/2″ NPT |
| 3/4″ | 3/4″ NPT |
Threaded Fittings (Double Ended/Nipples)
| Heater Outside Diameter | Fitting Size |
|---|---|
| 3/8″ | 1/4″ NPT |
| 1/2″ | 3/8″ NPT |
| 5/8″ | 1/2″ NPT |
| 3/4″ | 3/4″ NPT |
Styles
Brass Bushing (BRBU)
- High temperature lead wire
- Cement potting is standard
- Silicone rubber sleeve provides dielectric shield over each lead to core connection
- Bushing is brazed 100% around heater body for submersion applications
- Refer to size chart for bushing specifications
Brass Bushing Size Chart
| Heater Dia. | Pipe Size NPT | A Dim. | C Dim. |
|---|---|---|---|
| 1/4″ | 1/8-27 | 7/16″ | 5/8″ |
| 3/8″ | 1/4-18 | 5/8″ | 5/8″ |
| 1/2″ | 3/8-18 | 11/16″ | 3/4″ |
| 5/8″ | 1/2-14 | 13/16″ | 13/16″ |
| 3/4″ | 3/4-14 | 1 1/16″ | 15/16″ |
| 15/16″ | 1-11 1/2 | 1 3/8″ | 1 3/16″ |
| 1″ | 1-11 1/2 | 1 3/8″ | 1 3/16″ |
| 1 1/4″ | 1 1/4-11 1/2 | 1 3/4″ | 1 3/16″ |
High-Temperature Fiberglass Leads (IL)
- High temperature lead wire
- Cement potting is standard
- Silicone rubber sleeve provides dielectric shield over each lead to core connection
Stainless Steel Armor (SSA)
- High temperature lead wire
- Cement potting is standard
- Silicone rubber sleeve provides dielectric shield over each lead to core connection
- Stainless steel armor is flexible and provides maximum abrasion resistance
Right Angle Stainless Steel Armor (RASA)
- High temperature lead wire
- Cement potting is standard
- Silicone rubber sleeve provides dielectric shield over each lead to core connection
- For areas with overall height restrictions
- Stainless-steel armor is brazed to 90 degree cap
- Provides maximum abrasion resistance for leads
Stainless Steel Conduit With Copper Coupler
STYLE-SCA – Stainless steel conduit with a copper coupler that overlaps heater sheath.
Right Angle Copper Coupling + Armor (RACA)
- High temperature lead wire
- Cement potting is standard
- Silicone rubber sleeve provides dielectric shield over each lead to core connection
- Coupling and stainless steel armor are brazed to heater body
- Lead direction change is gradual and has limited strain and protected from process elements
Stainless Steel Braid (SSB)
- High temperature lead wire
- Cement potting is standard
- Silicone rubber sleeve provides dielectric shield over each lead to core connection
- Stainless steel metal braid provides abrasion resistance with maximum flexibility
Right Angle Stainless Steel Braid (RASB)
- High temperature lead wire
- Cement potting is standard
- Silicone rubber sleeve provides dielectric shield over each lead to core connection
- Stainless steel braid is embedded inside the cap and provides excellent abrasion resistance and flexibility
- Low-profile right angle cap TIG welded for maximum strength to heater body
Post Terminals
- Threaded post terminal leads attached directly to heater pins
- Cement potting is standard
- Silicone rubber sleeve provides dielectric shield over each lead to core connection
- Different thread options available