TEMPCO Swaged Cartridge Heater: 300 W Watts, 3 in Lg, 12 in Lead Lg, 240V, 153 W/sq in
The TEMPCO Swaged Cartridge Heater (SKU 4NJR6, MPN HDC20539) is a 300 W cartridge heater with a 240V voltage rating and a watt density of 153 W/sq in. It features a 3-inch length, 1/4-inch diameter, and 12-inch lead…
SKU 3G-OTH-66889
Need installation or engineering help?
Ask a question
Product Description
The TEMPCO Swaged Cartridge Heater (SKU 4NJR6, MPN HDC20539) is a 300 W cartridge heater with a 240V voltage rating and a watt density of 153 W/sq in. It features a 3-inch length, 1/4-inch diameter, and 12-inch lead length. This industrial heater is designed for direct insertion into drilled holes for process heating applications.
Frequently Asked Questions
What is the TEMPCO Swaged Cartridge Heater used for?
The TEMPCO Swaged Cartridge Heater is used for direct insertion into drilled holes in metal parts for process heating applications such as mold heating, packaging machinery, and hot stamping. Its swaged construction provides high watt density and efficient heat transfer in confined spaces.
What are the specifications of the TEMPCO Swaged Cartridge Heater?
The TEMPCO Swaged Cartridge Heater (MPN HDC20539) delivers 300 W at 240V with a watt density of 153 W/sq in. It has a 3-inch length, 1/4-inch diameter, and 12-inch lead length. These specs make it suitable for precise, high-temperature industrial heating applications.
Where to buy the TEMPCO Swaged Cartridge Heater worldwide?
You can source the TEMPCO Swaged Cartridge Heater through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this and other TEMPCO cartridge heaters.
How to install a TEMPCO Swaged Cartridge Heater?
Install the TEMPCO Swaged Cartridge Heater by inserting it into a clean, close-tolerance drilled hole in the workpiece. Ensure the hole diameter matches the heater diameter for optimal heat transfer. Use a suitable heat sink compound and secure the lead wires to prevent strain. Always disconnect power before installation.
Used in
Common applications for TEMPCOTEMPCO Products
3G Electric supplies TEMPCO cartridge heaters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.











