Core Value

High-performance High Temperature Ceramic Plugs for industrial electric heaters, injection molding band heaters, and extruders. Backed by 30+ years of industrial manufacturing experience, our connectors feature a heavy-duty Aluminum Alloy Shell and Steatite Ceramic Core (Models T727, T729). Rated for 220V–600V AC, current up to 35A, and continuous operating temperatures up to 500°C. Undergoes multiple rigorous quality checks to ensure zero-defect delivery. OEM/ODM customization available with 24-hour rapid quoting.

High Temperature Plug Model Selection Guide

Select the appropriate plug configuration based on your equipment layout, terminal spacing, and installation clearance:

• T727 Series: Cast Aluminum Alloy Housing, Straight (180°) Outlet Angle, Ø 5 mm / Ø 6 mm Terminal Pin Diameter, 35A Max Current. Best for standard band heater power inputs with open axial space.

• T728 Series: Cast Aluminum Alloy Housing, Right Angle (90°) Outlet Angle, Ø 5 mm / Ø 6 mm Terminal Pin Diameter, 35A Max Current. Best for compact machinery layouts requiring low-profile wiring.

• T729 Series: Heavy-Duty Aluminum Housing, Right Angle (90°) Outlet Angle, Ø 6 mm High Load Terminal Pin Diameter, 35A Max Current. Best for high-wattage ceramic band heaters and extrusion dies.

• Silicone Series: Flexible Silicone Rubber Housing, Straight / Elbow Outlet Angle, Ø 4 mm / Ø 5 mm Terminal Pin Diameter, 25A Max Current. Best for moderate-temperature applications requiring moisture resistance.

Housing Material Comparison: Aluminum Shell vs. Silicone Housing

Choosing the correct shell material depends on ambient thermal radiation, physical vibration, and mechanical exposure:

• Continuous Working Temp: Cast Aluminum Shell up to 500°C (932°F) | Silicone Housing up to 200°C (392°F)

• Mechanical Strength: Cast Aluminum Shell offers superior impact resistance and rigid casing | Silicone Housing is flexible, shock-absorbing, and tear-resistant

• Dielectric Strength: Cast Aluminum Shell is insulated by internal Steatite Ceramic core | Silicone Housing provides high inherent dielectric insulation

• Wiring Protection: Cast Aluminum Shell includes Stainless Steel Spring Relief Sleeve | Silicone Housing includes integrated flexible strain relief boot

• Best Used For: Cast Aluminum Shell is built for ceramic band heaters, nozzle heaters, ovens | Silicone Housing is suitable for moderate-heat barrel heaters and humid areas

Technical Specifications & Electrical Performance

• Voltage Rating: 220V – 600V AC (Customizable for 110V / 380V / 480V / 600V). Compatible with international power grids.

• Continuous Amperage: 25A / 35A (Customizable up to 50A Heavy Duty). Silver-plated brass terminals limit temperature rise.

• Insulation Core: High-Frequency Steatite Ceramic (Customizable to High-Purity Alumina Ceramic). Excellent dielectric property under high heat.

• Contact Resistance: ≤ 5 mΩ (Silver-plated contact upgrade available). Prevents terminal arcing and contact oxidation.

• Cable Protection: Stainless Steel Spring Sleeve (Armor conduit connector available). Prevents conductor fatigue from machine movement.

• Manufacturing Provenance: Backed by 30+ years manufacturing experience in connector machining and ceramic molding precision.

• Quality Assurance: Every batch undergoes multiple rigorous quality checks, including high-voltage insulation and high-temperature stress tests.

• Certifications: CE, LVD, RoHS, ISO 9001 compliance documentation. Full quality, COC, and testing reports provided with every shipment.

Key Engineering Advantages for Industrial Applications

• High Thermal Endurance: Steatite ceramic insert maintains full insulation strength under continuous operating temperatures up to 500°C without mechanical degradation or breakdown.

• Low Contact Heating: Silver/nickel-plated copper alloy terminals ensure low contact resistance, reducing terminal burnout risks during high-amperage continuous cycles.

• Vibration & Flex Fatigue Protection: The stainless steel tail spring strain relief disperses bending stress, preventing lead-wire shearing on high-vibration injection machines and presses.

• Easy Maintenance & Field Wiring: Split-shell design with threaded retention screws allows quick assembly, field inspection, and wire replacement without special tools.

• Long-Term Longevity: 30+ years of specialized production experience guarantees outstanding component fitment precision and maintenance-free continuous operation.

Industrial Applications & Compatible Equipment

• Plastics Extrusion & Injection Molding: Provides reliable power connections for ceramic band heaters and nozzle heaters on processing barrels.

• Rubber Vulcanizers & Thermoforming Presses: Heat and vibration-resistant connection point for heating plates and dies.

• Industrial Drying Ovens & Furnaces: Connects power leads to heating element banks in high-ambient temperature processing environments.

• Packaging & Heat-Sealing Systems: Delivers steady current to continuous heating bars and sealing jaws.

HT-Heater vs Standard Market Heaters

Step-by-Step Installation & Wiring Guidelines

• Power Isolation: Ensure main electrical supply is locked out and tagged prior to installation or servicing.

• Housing Separation: Remove the casing screws to separate the aluminum shell halves and expose the ceramic core block.

• Lead Conductor Connection: Pass high-temperature fiberglass or silicone-insulated lead wires through the stainless steel spring relief. Strip wire ends, insert into terminal blocks, and tighten set screws securely to ensure low contact resistance.

• Shell Alignment & Securing: Seat the ceramic core into the internal alignment grooves of the aluminum shell. Reassemble housing halves and tighten outer retention screws firmly.

• Grounding Check: Confirm proper grounding continuity where required by local electrical safety codes.

Frequently Asked Questions (Technical FAQ)

• Q1: How do I choose between a straight (T727) and a 90-degree elbow (T728/T729) plug? A: Choose the straight T727 if you have clear axial space extending from the heater terminals. Choose 90° elbow models (T728/T729) if the heater is positioned inside a tight machine shroud or near structural frames.

• Q2: Can this ceramic plug be used outdoors or in wet environments? A: Aluminum shell ceramic plugs are designed for high-temperature indoor industrial environments and are not waterproof. For moisture-exposed areas with temperatures under 200°C, use our flexible Silicone Housing series.

• Q3: What pin size is required for my band heater terminals? A: Standard industrial band heaters typically utilize Ø 5 mm or Ø 6 mm terminal pins. Verify your pin diameter with calipers prior to ordering, or request custom pin spacing from our engineering team.

Pricing & Procurement Options

• • • • Standard Production: MOQ 10 pieces. BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE ensuring exact dimension repeatability across production runs. Tiered OEM discounts available for 50+ units.

      • Lead Times: Standard Stock Sizes: 3-5 days. Custom Coiling & Wire Configurations: 7-10 days. Express sample dispatch available for urgent mold repairs.

      • Global Logistics: Express delivery via DHL, FedEx, UPS, or air freight. Packed securely in anti-static bags and protective export cartons.

      • Sample Orders: Custom samples manufactured upon CAD drawing approval. Every unit UNDERGOES MULTIPLE RIGOROUS QUALITY CHECKS prior to dispatch.

Global Certifications & Compliance

• CE Marking
  Fully compliant with European safety and environmental standards.
• LVD Compliance
  Low Voltage Directive tested for continuous thermal load safety.
• RoHS Compliant
  Constructed using environmentally safe, lead-controlled brass alloys.
• ISO 9001
  Certified quality control covering CNC machining, coil pressing, and electrical testing.

Quality Documentation: Certificate of Conformity (COC) and insulation resistance test reports included.

Comprehensive After-Sales Support

• • Warranty: 1-Year Comprehensive Warranty covering internal heating element and built-in sensor.

  • Technical Support: Application engineers available for wattage distribution calculation, thermocouple calibration, and nozzle fitting assistance.

  • Global Response Network: BACKED BY 30+ YEARS MANUFACTURING EXPERIENCE with technical inquiry feedback within 2 hours.

Ready to Optimize Your Injection Molding?

Next Steps:

• 📧 Request Custom Quote – Send your nozzle dimensions, wattage, voltage, and HT-CLW-450 drawing requirements.
• 🔧 Free Design Consultation – Work with our thermal engineers to optimize heat distribution and lead insulation.
• 📦 Order Test Samples – Evaluate thermal performance on your injection molding machine.
• 📞 Contact Hot Runner Experts – Response within 2 hours

• Leading Manufacturer & Export of Industrial Heaters

  Providing A One Stop Solutions To All Industrial Heaters Needs

  SINCE 1990 Professional Heater Producer | Our Products Undergo Multiple Rigorous Quality Checks