Description
xAutomatic Transfer Switch 100A 4-Pole – ATS for Solar Inverter, Grid and Generator
A 100A 4-pole automatic transfer switch (ATS) for dual-source AC power systems operating at 400V AC. Used in solar PV systems to switch automatically between a solar inverter output and grid or generator supply, ensuring only one source feeds the load at any time. Supports both automatic and manual operation modes, with switching time under 2 seconds.
Key Features
- 100A rated current, 4-pole
- Rated voltage: AC 440V / Working voltage: AC 220V
- Frequency: 50/60Hz
- Switching time: under 2 seconds
- Both automatic and manual operation supported
- Zero-crossing switching technology for emergency disconnection of both sources simultaneously
- Mechanical and electrical interlocking: prevents both sources connecting simultaneously
- Built-in DC switch: short circuit, fire protection and double-break functions
- Clear on/off position indicators and padlock provisions
- Rated for over 8,000 operating cycles
- PC plastic housing: 244 x 118 x 145mm
Product Overview
The ATS monitors both connected power sources continuously. When the primary source fails or falls outside acceptable parameters, the switch transfers the load to the backup source automatically. When the primary source recovers, the switch returns the load and disconnects the backup. The mechanical interlock ensures the two sources can never be connected together, which protects both the inverter and the grid connection.
The zero-crossing switching function allows both sources to be disconnected simultaneously in an emergency, which is a requirement for fire protection systems in commercial installations.
Operating Modes
- Main power active
- Standby power active
- Both sources isolated (I–0–II)
- Emergency manual operation
- Electronic remote control
- Automatic switching with dynamic state monitoring
- Emergency disconnection
Applications
- Solar off-grid systems switching between inverter output and grid backup
- Generator changeover for hybrid and off-grid installations
- Three-phase backup power systems
- Commercial and industrial dual-source AC distribution
What Is Included
- 1 x 100A 4-pole automatic transfer switch
Installation Notes
Installation must be carried out by a qualified electrician. The ATS must be correctly sized for the connected load and cable cross-sections. Correct fusing upstream of both inputs is required. Follow the manufacturer wiring diagram and comply with current wiring regulations.
Specifications
x| Parameter | Value |
| Model | BYAF-63 |
| Poles | 3P / 4P |
| Standard | IEC60947.3 |
| Rated Operational Voltage (Ue) | 230V - 440V |
| Rated Current | 40A / 63A |
| Mechanical Cycle Life | 10,000 |
| Electrical Cycle Life | 1,500 |
| Ingress Protection | IP65 enclosure |
| Certification | CE |
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.