Electrical Terminations Cartridge Heaters

Electrical Terminations-Cartridge Heaters-Lead Types & Lead Protection Options:

Cartridge Heater with Crimped-On Leads
(Configuration 1)

Cartridge Heaters with Crimped-On Leads
A high temperature double crimp connects the MGT (450ºC) leads to solid nickel pins. This construction is recommended for applications with elevated temperatures. Due to the rigid nickel pins, this construction is not recommended in applications where movement or flexing is encountered, or if sharp bends are required adjacent to the heater exit.

Cartridge Heater with Swaged-In Leads
(Configuration 2)



 

 

Cartridge Heaters with Swaged-In Leads
High temperature MGT (450ºC) wire is internally connected and swaged in place. This construction is recommended for applications in which the leads must be bent at the exit point from the heater and where mild flexing may be found. For applications with continuous or more severe movement, we would recommend metal braid or armor cable.

Cartridge Heater with Stainless Steel Braid
(Configuration 3)



 

Cartridge Heaters with Stainless Steel Braid
High temperature MGT (450ºC) wire is internally connected and swaged in place. This construction offers protection against abrasion and sharp edges. This is a very strong construction which offers full length flexibility. This construction is recommended in applications with flexing and where the leads must pass through metal openings or routed along metal components.

Cartridge Heater with Stainless Steel Hose (Armor Cable)
(Configuration 4)



 

Cartridge Heaters with Stainless Steel Hose (Armor Cable)
High temperature MGT (450ºC) wire is internally connected and swaged in place. This construction is recommended for applications in which the leads are subjected to abrasion or run the risk of being pinched. This is the strongest lead protection available and works well in moving or flexing applications.

Cartridge Heater with Right Angle Fiberglass Leads
(Configuration 5)



 

Cartridge Heaters with Right Angle Fiberglass Leads
High temperature MGT (450ºC) leads exiting at right angle to the sheath. This construction offers a compact design where space is limited. This construction is not recommended where abrasion or flexing is present.

Cartridge Heater with Right Angle Stainless Steel Braid
(Configuration 6)



 

Cartridge Heaters with Right Angle Stainless Steel Braid
Stainless steel braid over high temperature MGT (450ºC) wire exiting at right angle to the sheath. This construction is recommended in applications with flexing and where the leads must pass through metal openings or routed along metal components. This construction is desirable when space is limited and it is not feasible to bend standard leads.

Cartridge Heater with Copper Elbow
(Configuration 6B)



 

Cartridge Heaters with Copper Elbow

Armor cables are less flexible than stainless steel braids, but provide contamination resistance in addition to superior protection against abrasion. A copper elbow braised to the cartridge externally, provides a 90° transfer.

Cartridge Heater with Right Angle Stainless Steel Hose (Armor Cable)
(Configuration 7)



 

Cartridge Heaters with Right Angle Stainless Steel Hose (Armor Cable)
Stainless steel hose over high temperature MGT (450ºC) wire exiting at right angle to sheath. This is the strongest lead protection for use in applications where severe abrasion is present. These leads offer good flexibility and are good for moving or flexing applications

Cartridge Heaters with Single or Double Threaded Fittings - Brass or Stainless Steel NPT Fittings
(Configuration 8)


 

Single or double threaded fittings attached to sheath to allow for installation into threaded holes
(Configuration 8A)


 

Single or double threaded fittings attached to sheath to allow for installation into threaded holes
(Configuration 8B)



 

Cartridge Heaters with Single or Double Threaded Fittings - Brass or Stainless Steel NPT Fittings.


Single or double threaded fittings attached to sheath to allow for installation into threaded holes.

Cartridge Heater with Mounting Flange
(Configuration 9)



 

Cartridge Heaters with Mounting Flange
Mounting flanges are recommended for applications where vibration or movement may cause the heater to be dislodged from its hole. Stainless steel flanges are available in a variety of sizes and configurations. The standard flange is round and is supplied with two mounting holes. For heaters 5/8" diameter and under, the flange would be 1 1/2" in diameter. For larger diameter heaters the standard flange would be 2.00" in diameter

Cartridge Heater with Teflon End Seal
(Configuration 10)



 

Cartridge Heater with Teflon End Seal
A Teflon plug is swaged in place along with Teflon leads. This construction resists oil and water to 250°C/480°F. There is a minimum of a 1.00" unheated length at the lead end. Longer cold sections may be required if the watt density or operating temperature is high.

Cartridge Heater with Screw Terminals
(Configuration 11)



 

Cartridge Heater with Screw Terminals
Threaded stud terminals are supplied complete with high temperature nuts and washers. Standard screw is #8-32. Available in 5/8", 3/4", 1", 16 mm and 20mm diameters heaters.

Cartridge Heaters with Double Ended Terminals
(Configuration 12)



 

Cartridge Heaters with Double Ended Terminals
These terminations are ideal for applications where wiring form both ends is required. A minimum cold section of 1" is required for these leads.

 

Available Terminations
- Solid nickel pins

- Lead Wires

- Threaded Studs

Cartridge Heater with Terminal Boxes
(Configuration 13)


 

Cartridge Heater with Terminal Boxes
Terminal boxes are permanently attached to the heater sheath to provide excellent protection in a variety of environments.

Available Boxes
- General purpose sheet metal
- Moisture proof
- Cast aluminum explosion resistant


 

 

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Cartridge Heater Leads and Lead Protection Options:

Cartridge Heaters Leads- NPH supplies several types of leads for cartridge insertion heaters.

 

Fiberglass (standard)
Temperature rating : 482°F | 250 °C

 

Silicone
Temperature rating : 356 °F | 180 °C


Silicone cable
Temperature rating : 356 °F | 180 °C


 

Teflon
Temperature rating : 500 °F | 260 °C


 

Teflon (High Amperage)
Temperature rating : 500 °F | 260 °C


 

Fiberglass (High Temp.)
Temperature rating : 932 °F | 500 °C

 

 

Lead Protection for Cartridge Heaters

NPH offers the following lead protection options

 

Fiberglass Sleeve

 

Braided Metal Sleeve

 

Armor Cable

 

Armor Cable (Gas Proof)

 

 

Potting options for Cartridge Heaters- NPH is also a supplier of various potting options for Cartridge heaters.

 

Ceramic
Temperature rating : 1000 °F | 538 °C


Epoxy
Temperature rating : 600 °F | 315 °C

 

Teflon Plug

Temperature rating : 450 °F | 232 °C

 

Silicone

Temperature rating : 500 °F | 260 °C

 

Silicone (High Temp.)

Temperature rating : 650 °F | 343 °C

Our industrial electric cartridge heaters including metric and imperial heaters...

Inquiries & Technical Support

Telephone: 905-859-8225 Facsimile: 905-859-4691

sales@nphheaters.com

Toll Free: 1-877-674-9744