HVAC Star Controls | Premium Definite Purpose Contactors & Relays for HVAC Systems

About HVAC Star Controls

A trusted manufacturer of high-quality electrical control components for HVAC systems since 2004.

Hecheng Electrical Co., Ltd. has been dedicated to developing high-quality Definite Purpose Contactors, Disconnect Switches, Relays, and other control parts for HVAC systems since its establishment in 2004. We have extensive experience supplying components directly or indirectly to many renowned global companies and brands.

Our collaboration with industry leaders has enabled us to establish a robust process control system — covering supplier evaluation, coiling process & inspection, general assembly, packing, and delivery. Supported by our rich Supply Chain Management (SCM) expertise, we operate efficiently and deliver consistent quality.

20+

Years in Industry

50+

Global Markets

Our Product Range

High-performance electrical components engineered for reliability, efficiency, and long service life in HVAC and industrial applications.

20-30FLA 1Pole

Definite Purpose Contactor for single-phase HVAC systems with reliable switching up to 30A.

• 1-Pole Configuration
• 20-30A Load Capacity
• DPDT Relay Compatible
• UL & CE Certified

20-30FLA 3Pole

Three-pole definite purpose contactor ideal for commercial HVAC compressors and motors.

• 3-Pole Configuration
• 20-30A Per Pole
• High Inrush Tolerance
• Flame Retardant Housing

40FLA 2Pole

Dual-pole contactor rated for 40A, suitable for larger residential and light commercial units.

• 2-Pole Design
• 40A Continuous Load
• Silver Alloy Contacts
• Low Coil Power Consumption

40FLA 4Pole

Four-pole configuration for complex HVAC control circuits and multi-stage systems.

• 4-Pole Layout
• 40A Per Pole
• Modular Design
• Anti-Arc Shielding

50FLA 3Pole

Heavy-duty 3-pole contactor for industrial HVAC and refrigeration applications.

• 50A Load Rating
• 3PST Configuration
• High Dielectric Strength
• VDE & RoHS Compliant

90FLA 3Pole

High-capacity contactor for large-scale HVAC systems and industrial chillers.

• 90A Continuous Current
• 3-Pole Power Switching
• Reinforced Arc Chutes
• IP20 Protection Rating

PYF08A & PYF08A-E

Miniature switching relays for control circuits, fan motors, and auxiliary functions.

• 8A Switching Capacity
• 24VAC/240VAC Coil Options
• Plug-in or PCB Mount
• Long Mechanical Life (>10M cycles)

PF113A & PF113A-E

High-reliability power relays for HVAC control panels and automation systems.

• 10A @ 277VAC
• Fast Switching Response
• Sealed Coil Design
• Wide Operating Temp Range

8PFA & PYF14.5A

High-current switching relay with enhanced thermal stability and contact durability.

• 14.5A Max Load
• 24VDC/120VAC Coils
• Double Break Contacts
• Shock & Vibration Resistant

PT-14 & PL-08

Potential relays for compressor start assistance in refrigeration and air conditioning units.

• 14/8μF Capacitor Support
• Auto-Disconnect Function
• Hermetically Sealed
• High Voltage Withstand

PL-11 & ALD-5

Current-sensitive relays for motor protection and overload detection in HVAC systems.

• 11A Trip Threshold
• Adjustable Delay
• Manual Reset Option
• LED Status Indicator

JQX-62F-1Z

General-purpose electromagnetic relay with high switching reliability and compact size.

• SPDT Configuration
• 10A @ 250VAC
• 5V to 48VDC Coils
• Industrial Grade Enclosure

Why Choose HVAC Star Controls?

We combine engineering excellence, rigorous quality control, and global supply chain expertise to deliver components you can trust.

Certified Quality

All products meet UL, CE, RoHS, and VDE standards. Rigorous testing ensures long-term reliability and safety compliance.

Global Manufacturing

State-of-the-art facility with experienced engineers and strict process control from raw materials to final packaging.

Worldwide Distribution

Serving markets across Asia, Middle East, Africa, Europe, and North & South America with fast, reliable logistics.

High-Performance Design

Engineered for high inrush currents, thermal stability, and resistance to arcing — ideal for demanding HVAC environments.

Expert Technical Support

Our engineering team provides application guidance, troubleshooting, and custom solutions upon request.

Fast Delivery & Packaging

Robust packaging ensures safe transit. In-stock items ship quickly with global express options available.

Frequently Asked Questions

Get answers to common technical and ordering inquiries.

What is the difference between a relay and a contactor?

The essential difference lies in load capacity. Contactors are designed for higher current loads (typically >10A) and are used to control motors, compressors, and heavy HVAC equipment. Relays handle lower control circuit currents and are used for signaling, fan control, and auxiliary switching.

Can relays be energized continuously?

Yes, most modern relays — especially voltage relays — are designed for continuous coil energization. HVAC Star Controls' relays use thermally stable coils and are rated for 24/7 operation under specified voltage conditions.

Do you offer custom configurations?

Yes, we support OEM/ODM projects. Our engineering team can customize coil voltages, contact arrangements, mounting styles, and labeling based on your specifications.

What certifications do your products have?

Our contactors and relays are certified to UL, CE, RoHS, and VDE standards. Full compliance documentation is available upon request.

How do I place an order or request a quote?

Please visit the official website to contact us directly for pricing, samples, and bulk orders.

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Precision HVAC Control Components for Demanding Applications