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The air conditioning switch junction box is an important component for connecting the air conditioning power supply, control circuit, and internal and external units
As a professional air conditioner junction box manufacturer, JIAHAO supplies the switch junction box for air conditioner systems — an essential power distribution and protection component for split air conditioning. This air conditioner junction box safely connects the power lines, indoor unit signal lines, and outdoor unit power and signal lines, ensuring stable and reliable operation of the whole system.
Available in flame-retardant plastic (PCDS) and durable metal (PDS) enclosures, our switch junction boxes support 30A / 60A ratings at 120V / 240V, 1-phase 3-wire systems. Whether you need a standard junction box for air conditioner projects or a custom OEM/ODM switch junction box solution, JIAHAO delivers safe and stable power connection for home and commercial air conditioning.
The air conditioner junction box is usually installed on the wall near the indoor unit at about 1.5-1.8 meters above the ground for easy operation and maintenance.
The junction box for air conditioner wiring is securely installed with no obstacles around it, making it easy for wires to enter, exit, and connect.
This switch junction box connects power lines, indoor unit signal lines, outdoor unit power lines, and signal lines for full-system coverage.
Distinguish wires of different colors and connect them per markings; tighten every terminal of the junction box to avoid virtual connection before closing the cover.
Main Ampere Rating | HP Rating | Wire Size Range Cu/Al 60 or 75℃ | Product Code | Full Load Amps | Fuse | |
120V | 240V | |||||
30AMP, 240VAC | STD0.5 MAX.2 | STD.1.5 MAX3 | #14-3 | PCDS: Plastic Enclosure | 60A / 30A | Nil / Fused |
60AMP, 240VAC | STD.1.5 MAX.3 | STD.3 MAX.10 | #14-3 | |||
60AMP, 240VAC | STD.3 MAX.10 | #14-3 | ||||
The air conditioner switch junction box casing is made of flame-retardant materials, effectively isolating live parts and reducing the risk of electric shock.
The terminals of the switch junction box are tightened with screws or spring buckles to ensure good contact during long-term use.
High-quality materials of the air conditioner junction box resist high temperatures, humidity, and aging, extending their service life.
■ Why Choose JIAHAO
3-year warranty and 3-year compensation guarantee, ensuring peace of mind for every order.
Best value for money among comparable quality at competitive prices.
Custom switch junction box orders ready in 20-30 days; in-stock products delivered in just 7-15 days.
Full certificates and test reports, 50+ patents, flexible T/T terms including pre-port settlement.
Our quality, safety, and compliance for switch junction boxes and HVAC components are validated by international certifications and test reports, underscoring our commitment to global standards in refrigeration component performance, sustainability, and manufacturing excellence.
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■ Frequently Asked Questions (FAQ)
A switch junction box for air conditioner is a power distribution and protection component used in split air conditioning systems. It safely connects the power lines, indoor unit signal lines, and outdoor unit power and signal lines, helping ensure stable and reliable operation of the whole system.
Our junction box for air conditioner is available in two versions: PCDS with a flame-retardant plastic enclosure, and PDS with a durable metal enclosure. Choose the protection level that best suits your installation environment and project requirements.
The air conditioner switch junction box supports 30A / 60A main ampere ratings at 120V / 240V, 1-phase 3-wire systems, with a wire size range of #14-3 Cu/Al at 60 or 75℃. Fused and non-fused versions are available.
It is usually installed on the wall near the indoor unit at about 1.5-1.8 meters above the ground for easy operation and maintenance. Make sure it is securely fixed with no obstacles around it, so wires can enter, exit, and connect easily.
Follow the installation instructions of your air conditioner. Generally, connect the power cord to the corresponding terminals of the junction box first, then connect the signal and power cords of the indoor and outdoor units. Distinguish wires of different colors, connect them according to the markings, and tighten every terminal to avoid virtual connection before closing the cover.
Yes. As an air conditioner junction box manufacturer, JIAHAO provides OEM/ODM services tailored to customer needs. Custom switch junction box orders are typically delivered in 20-30 days, while in-stock products can be delivered within 7-15 days.
