Core Value

High-performance 2 Way and 3 Way High Temperature Ceramic Terminal Blocks for industrial electric heating equipment, industrial furnaces, power distribution boxes, and high-ambient wiring applications. Backed by 30+ years of industrial manufacturing experience, our ceramic connectors feature a high-purity Steatite / Alumina Ceramic Body integrated with heavy-duty brass/copper terminal inserts and stainless steel binding screws. Rated for 220V–600V AC, current capacity from 15A up to 60A, and continuous operating temperatures up to 500°C. Undergoes multiple rigorous quality checks to guarantee zero-defect delivery. OEM/ODM customization available with 24-hour rapid quoting.

High Temperature Ceramic Terminal Block Model Selection Guide

Select the appropriate ceramic connector configuration based on circuit poles, amperage requirements, and wire gauge spacing:

• 2-Way Small Current Series: Steatite Ceramic Body, 2-Pole Straight Feed, 5A – 15A Capacity, Ø 3.0 mm – Ø 4.2 mm Wire Hole. Best for compact signal lines, thermostatic sensors, and low-wattage band heaters.

• 2-Way High Current Series: Reinforced Alumina Ceramic Body, 2-Pole Heavy-Duty, 30A – 60A Capacity, Ø 5.5 mm – Ø 8.0 mm Wire Hole. Best for single-phase heavy power leads in industrial ovens and heating elements.

• 3-Way Standard Series: Steatite Ceramic Body, 3-Pole Feed (L, N, PE), 15A – 30A Capacity, Ø 4.5 mm – Ø 6.0 mm Wire Hole. Best for standard 3-wire equipment requiring integrated ground connection.

• 3-Way High Power Series: High-Frequency Ceramic Body, 3-Pole High Ampere, 60A – 150A Capacity, Ø 8.0 mm – Ø 12.0 mm Wire Hole. Best for 3-phase industrial furnaces, kilns, and large processing machinery.

Core Material Comparison: Steatite Ceramic vs. Alumina Ceramic Core

Choosing the proper ceramic material depends on continuous working temperatures, thermal shock exposure, and mechanical load:

• Continuous Working Temp: Steatite Ceramic Body up to 500°C (932°F) | High-Purity Alumina Ceramic up to 800°C (1472°F)

• Dielectric & Electrical Insulation: Steatite Ceramic offers high dielectric resistance at moderate cost | Alumina Ceramic provides ultra-high breakdown voltage under extreme heat

• Thermal Shock Resistance: Steatite Ceramic is suitable for constant heat environments | Alumina Ceramic handles rapid temperature cycling without cracking

• Mechanical Strength: Steatite Ceramic provides standard rigid compression strength | Alumina Ceramic features superior impact and hardness ratings

• Best Used For: Steatite Ceramic is ideal for injection molding heaters, ovens, and HVAC elements | Alumina Ceramic is built for kilns, metallurgy, and severe heat processing

Technical Specifications & Electrical Performance

• Voltage Rating: 220V – 600V AC (Customizable for 110V / 380V / 480V / 600V). Fully compatible with global power grids.
• Continuous Amperage: 5A to 150A across different frame sizes. Nickel-plated brass or solid copper inserts prevent thermal oxidation.
• Insulation Core: High-Frequency Steatite Ceramic / 95% Alumina Ceramic. Maintains exceptional dielectric isolation under direct flame and high heat.
• Contact Resistance: ≤ 3 mΩ (Silver/Nickel-plated terminal upgrade available). Limits localized heating and eliminates terminal arcing.
• Hardware & Clamping: High-torque zinc/nickel-plated steel screws or stainless steel set screws. Maintains constant clamping force under thermal expansion cycles.
• Manufacturing Provenance: Backed by 30+ years manufacturing experience in precision ceramic molding and connector machining.
• Quality Assurance: Every batch undergoes multiple rigorous quality checks, including high-voltage insulation tests and dimensional gauge verifications.
• Certifications: CE, LVD, RoHS, ISO 9001 compliance documentation. Full quality, COC, and test reports included with every order.

Key Engineering Advantages for Industrial Applications

• Extreme Thermal Endurance: Ceramic insulation matrix resists continuous operating temperatures up to 800°C without carbonization, distortion, or structural softening.
• Arcing & Short-Circuit Prevention: High creepage distance and internal barrier walls separate conductors, preventing flashover and phase-to-phase short circuits.
• Thermal Expansion Resilience: Screw clamp design accounts for thermal cycling, preventing loose connections and terminal burnout over thousands of hours.
• Easy Installation & Field Inspection: Open-top terminal design allows quick screwdriver access, fast wire insertion, and visual contact verification.
• Long-Term Longevity: 30+ years of specialized production experience ensures exact hole pitch precision, smooth threads, and long maintenance-free service life.

Industrial Applications & Compatible Equipment

• Industrial Kilns & Furnaces: Connects heavy power cables to ceramic heater banks and heating rods.
• Plastics Machinery & Extruders: Delivers heat-resistant wiring termination for barrel heaters and nozzle band heaters.
• Commercial Catering & Cooking Equipment: Reliable junction point for griddles, fryers, and high-temperature baking ovens.
• HVAC & Duct Heaters: Provides safe electrical connections inside flanged duct heaters and air preheaters.

HT-Heater vs Standard Market Heaters

Step-by-Step Installation & Wiring Guidelines

• Power Isolation: Turn off and lock out main power supply before starting any wiring or maintenance.
• Wire Preparation: Strip high-temperature lead wire ends (fiberglass/silicone wire) to the recommended strip length (approx. 6mm – 10mm based on terminal size).
• Conductor Insertion: Insert stripped conductors straight into the 2-way or 3-way ceramic wire channels until fully seated in the metal contact block.
• Screw Torque Adjustment: Tighten terminal screws firmly using the appropriate screwdriver size to ensure maximum surface contact without crushing fine strands.
• Clearance Check: Verify adequate physical clearance between adjacent terminal blocks and surrounding metal machinery walls.

Frequently Asked Questions (Technical FAQ)

• Q1: How do I choose between a 2-Way and 3-Way ceramic terminal block? A: Use 2-Way terminal blocks for simple 2-wire single-phase or DC heater connections. Use 3-Way terminal blocks when connecting 3-phase circuits or when a dedicated grounding line (L, N, PE) needs to run through the same block.

• Q2: Can these ceramic blocks be mounted directly to metal machinery frames? A: Yes, our ceramic blocks feature center mounting holes for direct bolt-down attachment to equipment chassis, ensuring vibration resistance.

• Q3: What is the maximum wire gauge supported by your ceramic terminal blocks? A: Standard catalog models support wire sizes from AWG 22 up to AWG 2 (0.5 mm² to 35 mm²). Custom terminal block sizes can be engineered for larger gauge conductors upon request.

Custom OEM Solutions & Ordering Process

• MOQ & Samples: Standard catalog models available from stock (MOQ 20 pcs). Custom terminal hole sizes or special ceramic formulas delivered in 7–10 business days.
• Quality & Documentation Provided: Certificate of Conformity (COC), Material Test Reports (MTR), and Dielectric Breakdown Test Data included with every shipment.
• Inquiry Checklist: Please specify Number of Ways (2-Way/3-Way), Operating Current (A), Voltage, Wire Diameter (mm), and Quantity when requesting a quote.

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

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