Renogy 30A AC Power Transfer Switch

Before Getting Started

This user manual provides important operation and maintenance instructions for the Renogy 30A AC Power Transfer Switch (referred to as the transfer switch). Read the manual carefully before operation and save it for future reference. Failure to observe instructions or precautions can result in electrical shock, serious injury, or death, or damage to the battery, potentially rendering it inoperable.

• Renogy ensures the accuracy and applicability of information at the time of printing, subject to product improvements.
• Renogy assumes no responsibility for losses caused by failure to install and use the product in compliance with the manual.
• Renogy is not liable for failures, damage, or injury from repair attempts by unqualified personnel, improper installation, or inappropriate operation.
• Illustrations are for demonstration purposes only and may differ slightly based on product revision and market region.
• Renogy reserves the right to change information without notice. For the latest manual, visit renogy.com.

Disclaimer

Renogy 30A AC Power Transfer Switch User Manual © 2025 Renogy. All rights reserved. RENOGY is a registered trademark of Renogy.

• All information is subject to copyright and intellectual property rights of Renogy and its licensors. The manual may not be modified, reproduced, or copied without prior written permission.
• Registered trademarks are the property of Renogy; unauthorized use is strictly prohibited.

Online Manual

Scan the QR code or visit renogy.com for the online user manual.

Symbols Used

[WARNING]: Indicates a potentially dangerous condition which could result in injury or death.

[CAUTION]: Indicates a critical procedure for safe and proper installation and operation.

[NOTE]: Indicates an important step or tip for optimal performance.

[Risk of electric shock] This transfer switch operates with 120VAC and features multiple inputs. To avoid electric shock, ensure all inputs are fully disconnected before performing any work on the device.

[Risk of fire or explosion] DO NOT mount or install this transfer switch in compartments intended for storing batteries or flammable liquids. The transfer switch is not ignition-protected and contains components that may produce arcs or sparks.

[DO NOT install] DO NOT install this transfer switch near appliances that generate heat or water, such as water heaters, furnaces, or beneath refrigerators, to prevent damage and ensure safe operation.

[Ensure protection] Ensure the transfer switch is protected from direct contact with water and debris to maintain functionality and safety.

[Avoid mounting] Avoid mounting the transfer switch in a zero-clearance compartment to prevent overheating.

[Use knockouts] Use the provided knockouts for wiring to ensure safe installation. DO NOT drill into the metal housing; debris or metal shavings may compromise the transfer switch's operation.

Introduction

The Renogy 30A AC Power Transfer Switch is an electrical device designed to work seamlessly with battery inverters or inverter chargers to ensure an uninterrupted power supply. It delivers up to 3000 RMS symmetrical amps and automatically switches between multiple power sources, including the grid, vehicle alternators, home generators, and DC batteries. This device is ideal for systems demanding high reliability and continuous power, making it particularly suitable for use in recreational vehicles (RVs).

Key Features

• Easy Wiring: Equipped with terminal connections for AC input and output, enabling straightforward and efficient wiring.
• Simple Operation: Fully automated operation eliminates the need for additional manual intervention, providing a hassle-free experience.
• Stable and Reliable: Rigorously tested for reliability, the transfer switch delivers consistent performance across various scenarios, including use in vehicles, boats, off-grid homes, and more, even in environments as cold as 113°F (-20°C).

SKU

What's In the Box?

The package includes:

• Renogy 30A AC Power Transfer Switch × 1
• User Manual × 1

[NOTE] Make sure that the transfer switch is complete and free of any signs of damage. Otherwise, contact Renogy dedicated customer service at https://www.renogy.com/contact-us.

[NOTE] The accessories and product manual listed are crucial for the installation. Please note that package contents may vary depending on the specific product model.

Get to Know the 30A AC Power Transfer Switch

Exterior View

The exterior of the Renogy 30A AC Power Transfer Switch is a rectangular enclosure with a metal cover. It features mounting holes on the sides for installation and multiple cable knockouts on the front and sides for electrical wiring entry and exit.

Interior View

The interior of the transfer switch reveals clearly labeled terminal connections for various power sources: Control Panel (N, L), Generator (N, L), and Grid (N, L). A Ground Bar is also present for grounding connections.

Dimensions

The unit measures approximately 7.73 inches (196.4 mm) in height, 6.97 inches (177 mm) in width, and 3.02 inches (76.6 mm) in depth. The knockouts are approximately 0.21 inches (5.3 mm) in diameter, and the overall depth including knockouts is 7.38 inches (187.5 mm).

Dimension tolerance: ±0.2 in (0.5 mm)

Required Tools & Accessories

The following tools and accessories are recommended for installation:

• Phillips Screwdriver (#2)
• Insulating Gloves
• Wire Crimper
• Self-tapping Screws x 4

[NOTE] Prior to installing the transfer switch, prepare the recommended tools, components, and accessories.

[NOTE] Choose proper mounting screws specific to your installation site. This manual uses self-tapping screws for wooden walls as an example.

Installation

Step 1. Mounting

For optimal system performance, install the transfer switch in a clean, cool, and dry location, free from water, oil, or dirt. Ensure cables are long enough to connect devices without straining. Observe safety warnings regarding fire/explosion risk, heat/water sources, water/debris protection, and zero-clearance compartments.

Step 2. Remove the Cover

Pry open the latch at the labeled "OPEN" position to remove the cover. Reinstall the cover after completing wiring.

Step 3. Wiring

[Risk of electric shock] Before wiring, wear insulating gloves and power off all power supplies (grid, generator/alternator, inverter). Remove cable knockout covers before wiring and pass cables through them to connect to the terminals.

Power Supply Terminals

Terminals include Control Panel, Generator, and Grid. They are designed for ring terminal connections.

1. Remove the ring connector from a terminal using a Phillips screwdriver (#2).
2. Size cable appropriately (14 AWG to 6 AWG).
3. Strip wire insulation to the depth of the ring connector using a wire crimper. Insert the stripped cable and crimp securely.
4. Install the ring connector back to the terminal using a Phillips screwdriver (#2).

Ground Terminals

Ground terminals are equipped with cable retainers.

1. Open a cable retainer by turning the screw counterclockwise with a Phillips screwdriver (#2).
2. Size cable appropriately (14 AWG to 6 AWG).
3. Strip wire insulation to the depth of the cable retainer using a wire crimper. Insert the stripped cable into the retainer and crimp securely.

Working Logic

The transfer switch allows switching between grid, inverter, and generator/alternator as power sources. Grid power is pass-through when available. If operating with vehicle alternators, there's a 20-30 second delay for voltage stabilization before transfer. The switch works seamlessly with 120V AC home generators.

Switching Between the Grid and an Inverter

The switch prioritizes grid power. If grid power fails, the inverter automatically takes over.

Switching Between the Grid and a Generator/an Alternator

The switch prioritizes grid power. If grid power fails, the generator/alternator automatically takes over.

Switching Between the Grid, a Generator/an Alternator, and an Inverter

This configuration requires two transfer switches. The first connects grid and generator/alternator. The second links the first switch to the inverter. The system prioritizes grid power. If grid power is insufficient, the generator/alternator is used. If the generator/alternator shuts down, the inverter supplies power.

Specifications

Maintenance

Perform regular inspections:

• Examine the transfer switch housing and terminals for cleanliness, dryness, and absence of corrosion.
• Check cables and connections. Replace damaged cables and tighten loose connections.

[NOTE] Corrosion around terminals can increase resistance and cause poor contact. Applying insulation grease to terminals is recommended to form a moisture-resistant seal and protect them from corrosion.

Important Safety Instructions

The manufacturer accepts no liability for damage caused by:

• Force majeure (fire, typhoon, flood, earthquake, war, terrorism).
• Misuse, abuse, neglect, improper maintenance, or use under abnormal conditions.
• Improper installation, operation, or peripheral device malfunction.
• Contamination with hazardous substances or radiation.
• Alterations without manufacturer's written consent.

• Wear proper protective equipment and use insulated tools. Do not wear jewelry or metal objects.
• Keep the transfer switch out of reach of children.
• Dispose of the transfer switch according to local laws and regulations, using recycling channels.
• In case of fire, use a FM-200 or CO2 fire extinguisher.
• Do not expose to flammable or harsh chemicals or vapors.
• Clean the transfer switch regularly. Turn off all power sources before cleaning and ensure it is completely dry before restoring power. Do not clean the interior.

Renogy Support

For inaccuracies or omissions, visit renogy.com/support/downloads or contact contentservice@renogy.com.

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For technical questions in the U.S., contact Renogy technical support:

renogy.com/contact-us | 1(909)2877111

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• Canada: ca.renogy.com
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• Other Europe: eu.renogy.com
• Germany: de.renogy.com
• United Kingdom: uk.renogy.com

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