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Square（rectangle）Cartridge Heater
The Square Cartridge Heater is a precision-engineered heating element designed for applications where round heaters are not ideal. With a square cross-section, it ensures maximum surface contact, prevents rotation in cavities, and delivers uniform heat transfer. Manufactured with a stainless-steel sheath and high-quality insulation, these heaters are built for durability, energy efficiency, and long service life.
✔️ Square profile for secure fit in non-cylindrical cavities
✔️ High watt density for rapid and efficient heating
✔️ Operating temperature up to 760°C (1400°F)
✔️ Stainless steel sheath for superior corrosion resistance
✔️ Customizable designs (size, wattage, voltage, lead configuration)
✔️ Available with UL/CE certified options
Product Details
| Parameter | Specification |
|---|---|
| Shape | Square (custom and standard sizes available) |
| Dimensions | 6 mm – 25 mm (0.25 in – 1 in) |
| Sheath Material | Stainless Steel |
| Heating Element | Nickel-Chromium (NiCr) resistance wire |
| Voltage Options | 120V / 240V / custom |
| Power Output | Up to 1000W |
| Lead Types | Fiberglass, PTFE, or stainless steel braid |
| Max Temperature | 760°C (1400°F) |
| Tolerance | ±2% on resistance |
| Certifications | UL, CE (upon request) |
Specifications are typical. Final values depend on configuration and tolerances requested.
Applications of Square Cartridge Heaters
Common industrial use cases where square cartridge heaters provide secure fit and uniform heat transfer.
Plastic Processing
Injection molding, extrusion dies, hot runner manifolds.
Packaging Equipment
Hot bar sealers, laminators, form-fill-seal tools.
Tooling & Dies
Die casting molds, branding irons, hot stamping tools.
Heating Plates
Uniform platen heating for presses and bonding fixtures.
Laboratory & Analytical
Block heaters, sample conditioning, lab equipment.
Food & Process Machinery
Heat sealing jaws, dosing lines, contact heating.
Semiconductor
Preheating fixtures, bonding tools, precision jigs.
Printing & Hot Stamping
Embossing wheels, type heads, transfer stations.
General Heating
Fixtures, plates, and custom tooling with square cavities.
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FAQ
Frequently Asked Questions
What is a square cartridge heater?
A square cartridge heater is a high-performance heating element with a square cross-section, designed for non-round cavities. The square profile ensures better surface contact and prevents rotation.
What are the maximum operating temperatures?
Square cartridge heaters can operate up to 760°C (1400°F), depending on sheath material, watt density, and installation conditions.
Can I order custom sizes and specifications?
Yes. You can specify dimensions, voltage, wattage, lead type, and quantity. Custom-engineered designs are available for OEM applications.
What are common applications?
They are widely used in plastic processing, packaging equipment, hot stamping, die casting molds, heating plates, laboratory equipment, and more.
What certifications are available?
UL and CE certified versions are available upon request, ensuring compliance with international standards.
Elekheat-Certification
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Contact Us
Thank you for your interest in our cartridge heaters!
Whether you’d like to learn more about product specifications, request a custom solution, or request a quote, we’re happy to assist you.
Reach us through
- +86 15996326879
- sale@elekheat.com
- 8:30 AM - 18:00 PM
