1. Important Safety Information
Before installing or operating the QHHR 30 Amp Automatic Transfer Switch, please read and understand all safety instructions. Failure to follow these instructions may result in electric shock, fire, serious injury, or property damage.
- Qualified Electrician: Installation and wiring must be performed by a qualified electrician in accordance with all applicable electrical codes and standards.
- Disconnect Power: Always disconnect all power sources (shore power, generator, inverter) before working on the transfer switch or associated wiring. Verify power is off using a voltage tester.
- Proper Grounding: Ensure the transfer switch is properly grounded as per wiring diagrams and local codes.
- Voltage and Amperage: This unit is designed for 120V AC, 30 Amp service. Do not exceed these ratings.
- Environmental Conditions: Install the unit in a dry, protected location. Avoid exposure to moisture, extreme temperatures, or corrosive environments.
2. Product Overview
The QHHR 30 Amp Automatic Transfer Switch (Model TS-30) is designed to provide seamless and automatic power switching between two separate 120V AC input sources. It is ideal for RVs, travel trailers, and camper vans, allowing for automatic transition between shore power, an inverter, or a generator. This device ensures continuous power supply to your electrical panel by prioritizing one source over another.
Product Video Overview
3. Specifications
| Feature | Specification |
|---|---|
| Model | TS-30 |
| Current Rating | 30 Amps |
| Operating Voltage | 120 Volts (AC) |
| Operation Mode | ON-OFF-ON |
| Circuit Type | 2-way |
| Contact Type | Normally Closed |
| Connector Type | Plug In (Quick Connectors) |
| Terminal Type | Screw |
| Product Dimensions (L x W x H) | 7.48 x 4.13 x 8.27 inches |
| Weight | 2.49 Pounds |
4. Installation and Setup
Proper installation is crucial for the safe and effective operation of your automatic transfer switch. Refer to the internal wiring diagram provided on the unit's cover and consult a qualified electrician.
4.1 Mounting
- Select a dry, protected location for mounting the transfer switch, ideally close to your main electrical panel and power sources.
- Ensure there is sufficient space for wiring and ventilation.
- Securely mount the transfer switch using appropriate fasteners through the designated mounting tabs.
4.2 Wiring Instructions
The transfer switch is designed to handle two 120V AC input sources and one output to your RV's electrical panel. The unit features convenient quick-connect terminals for ease of wiring.
- DISCONNECT ALL POWER SOURCES before beginning any wiring.
- Identify your two input power sources (e.g., Shore Power, Inverter/Generator) and the output to your RV's main electrical panel.
- Route the appropriate gauge wires (rated for 30 Amps, 120V AC) into the transfer switch enclosure through the knockouts.
- Connect the Line (Hot), Neutral, and Ground wires from your first power source (e.g., Shore Power) to the designated input terminals.
- Connect the Line (Hot), Neutral, and Ground wires from your second power source (e.g., Inverter/Generator) to the designated input terminals.
- Connect the Line (Hot), Neutral, and Ground wires from the output terminals of the transfer switch to your RV's main electrical panel.
- Ensure all connections are secure and tight. The quick-connect terminals simplify this process.
- Verify the wiring against the diagram on the unit's cover.
- Once wiring is complete, replace the cover securely.
5. Operation
The QHHR 30 Amp Automatic Transfer Switch operates in an ON-OFF-ON mode, automatically sensing the presence of power from its designated primary source. When the primary source is available, the switch will connect to it. If the primary source is lost, the switch will automatically transfer to the secondary source, provided it is available. When the primary source returns, the switch will automatically revert to the primary source.
- Automatic Switching: The unit continuously monitors both connected power sources.
- Source Priority: The transfer switch is typically configured to prioritize one input source (e.g., shore power) over another (e.g., generator/inverter). Refer to your wiring configuration for specific priority.
- Delay: There may be a brief delay during power transfer to prevent rapid cycling and protect connected appliances.
6. Maintenance
The QHHR 30 Amp Automatic Transfer Switch is designed for minimal maintenance. However, periodic checks can help ensure its longevity and reliable operation.
- Annual Inspection: Annually, with all power disconnected, open the enclosure and visually inspect all wiring connections for tightness and signs of corrosion or overheating.
- Cleanliness: Keep the interior of the enclosure free from dust, dirt, and debris.
- Environmental Check: Ensure the installation environment remains dry and protected from elements.
7. Troubleshooting
If you experience issues with your QHHR 30 Amp Automatic Transfer Switch, consider the following troubleshooting steps:
- No Power to RV Panel:
- Verify that both input power sources (shore power, generator/inverter) are active and supplying power.
- Check circuit breakers on all power sources and the RV's main panel.
- Ensure all wiring connections within the transfer switch are secure.
- Switch Not Transferring:
- Confirm that the primary power source is indeed off or unavailable if you expect a transfer to the secondary source.
- Verify the secondary power source is active and supplying power.
- Inspect the internal mechanism for any obstructions (after disconnecting all power).
- Review the wiring diagram to ensure inputs are correctly assigned to the desired priority. Some users have found reversing input wiring resolved unexpected priority behavior.
- Burning Smell or Overheating:
- Immediately disconnect all power sources.
- This indicates a serious electrical issue. Do not attempt to operate the unit. Contact a qualified electrician for inspection and repair or replacement.
If problems persist after troubleshooting, contact customer support or a qualified electrician.
8. Warranty Information
The QHHR 30 Amp Automatic Transfer Switch comes with a One Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from improper installation, misuse, abuse, unauthorized modifications, or acts of nature. Please retain your proof of purchase for warranty claims.
9. Customer Support
For technical assistance, warranty claims, or further inquiries regarding your QHHR 30 Amp Automatic Transfer Switch, please refer to the contact information provided with your product packaging or visit the official QHHR website.