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Power
3640W
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Hashrate
260.00 TH/s
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Efficiency
14 J/T
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Algorithm
SHA-256
Bitdeer SealMiner A3 Air Bitcoin Miner 260TH/S
US$3,999.00
Top Hashrate : Up to 100% better than the previous generation
High Stability : Supports 24/7 continuous operation
Warranty : Come with 12-month factory warranty.
A3 Air Profitability Calculator
Daily Earning
ROI
Electricity
Electricity ratio
Net Profit
Miner Profitability History
Bitdeer SealMiner A3 Air is an ASIC miner designed for SHA-256 algorithm, specifically targeting BTC (Bitcoin) . It delivers a maximum hashrate of 260Th/s while consuming 3640W of power, resulting in an energy efficiency of 14j/Th.
Technical Specifications
| Product Glance | Value |
|---|---|
| Model | Sealminer A3 Air |
| Crypto algorithm/coins | SHA256| BTC/BCH/BSV |
| Typical hashrate | 260TH/s |
| Power on wall @35℃, Watt | 3640W±10% |
| Power efficiency on wall@35℃ | 14 J/TH±5% |
| Detailed Characteristics | Value |
|---|---|
| Power Supply | |
| Phase | 1 |
| Input voltage, Volt | 220~277 |
| Input frequency range, Hz | 50~60 |
| Input max current, Amp | 27 |
| Hardware Configuration | |
| Networking connection mode | RJ45 Ethemet 10/100M |
| Server size(length*width*height, w/o package), mm | 197*365*292 |
| Server size(length*width*height, with package), mm | 308*482*423 |
| Net weight, kg | 15.5 |
| Gross weight, kg | 17.5 |
| Environment Requirements | Value |
|---|---|
| Storage temperature, °C | -30~70 |
| Operation humidity(non-condensing), RH | 10~90% |
| Operation temperature,°C | -20~45 |
| Operation altitude, m | ≤2000 |
| What's in the Box | Value |
|---|---|
| Original factory mining machinery | ✓ |
| Power supply | ✓ |
| Shockproof packaging | ✓ |
(1) The hashrate value, power on wall, and power efficiency on wall are all typical values. The actual hashrate value fluctuates by ±3%, and the actual power on wall and power efficiency on wall fluctuate by ±5%.
(2) Caution: Wrong input voltage may cause server damaged.
(3) The noise is loudest when the fan is under maximum RPM(rotation per minute).
(4) When the server is used at an altitude from 900m to 2000m, the highest operating temperature decreases by 1℃ for every increase of 300m.
Estimated dispatch and delivery
Please select the applicable product batch. Future-batch and pre-order products follow the manufacturer’s actual release and dispatch schedule. Manufacturer delays may occur, and BT ECOMMERCE CO., LIMITED is not responsible for losses arising from those delays. If no batch selection is shown, the product is treated as in stock.
Shipping
New in-stock miners are normally dispatched within 1–3 business days after full payment is verified. Used in-stock miners require testing and are normally dispatched within 3–7 business days after full payment is verified. After dispatch, delivery usually takes 5–7 business days, subject to customs clearance and local carrier conditions. A tracking number will be emailed after shipment.
Cancellation, returns and faults
All sales are final and non-refundable. A cancellation may be requested before the order is handed to the carrier and is subject to a 25% cancellation fee. Orders cannot be cancelled after handover to the carrier. If a miner is faulty on arrival, contact us promptly. After diagnosis, eligible cases will be handled by repair or replacement only; no refund will be issued. Contact store@bt-miners.com for assistance.
VIABTC
ViaBTC
PPS+
Block Reward Fee: 4%
Transaction Fee Reward Fee: 2%
PPLNS
Pool Fee: 2%
Fees may vary by coin and mining method.
ANTPOOL
ANTPOOL
Multiple payment methods available.
Payment Methods: PPS+, PPLNS and other methods depending on coin
Pool Fee: Varies by coin
Minimum Payout: Varies by coin
Payout Schedule: Varies by coin
F2POOL
F2Pool
Multiple payout methods available.
Reward Scheme: Varies by coin
Pool Fee: Varies by coin and payout method
Minimum Payout: Varies by coin
Payout: Automatic payouts when the threshold is reached
SEALMINER A3 Air Description
SEALMINER A3 Air DescriptionThe Bitdeer SealMiner A3 Air Bitcoin Miner 260TH/s is engineered for miners who need reliable performance, flexible deployment, and efficient SHA-256 mining without the complexity of liquid cooling systems. As part of Bitdeer’s SealMiner A3 series, this model is designed to deliver consistent output as Bitcoin network difficulty continues to evolve.
With a hashrate of 260TH/s and a power draw of approximately 3250W, the A3 Air offers competitive efficiency for large-scale and hosted mining operations. Its air-cooling system uses high-performance fans to maintain operating temperatures during continuous 24/7 operation. Adequate airflow and proper environmental control are essential to ensure long-term stability.
Bitdeer SealMiner A3 Air vs Antminer S21
The SealMiner A3 Air delivers higher hashrate and better efficiency than the Antminer S21 while operating on standard 220–240V power. This makes it easier to deploy in a wider range of mining environments. The S21 remains suitable for high-voltage mining farms, but the A3 Air offers greater flexibility and lower infrastructure requirements for professional operators.
| Field | SealMiner A3 Air | Antminer S21 |
|---|---|---|
| Model | A3 Air | S21 |
| Hashrate | 260 TH/s | ~200 TH/s |
| Power | ~3250 W | ~3550 W |
| Efficiency | ~12.5 J/TH | ~17.5 J/TH |
| Cooling | Air-cooled | Air-cooled |
| Voltage | 220–240 V | 380–415 V |
| Noise | High | High |
| Best For | Flexible deployment | High-voltage farms |
| Notes | Easier power requirements | Higher voltage demand |
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Processing & Shipping Time
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Payment Policies
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Taxes and Custom Duties
Order Processing
New in-stock miners are normally dispatched within 1–3 business days after full payment is verified. Used in-stock miners require testing and are normally dispatched within 3–7 business days after full payment is verified. Future-batch and pre-order products follow the manufacturer’s actual release and dispatch schedule. Manufacturer delays may occur, and BT ECOMMERCE CO., LIMITED is not responsible for losses arising from those delays.
Shipping Carriers
Orders are shipped through reputable international carriers such as DHL, UPS or FedEx. A tracking number will be emailed after dispatch.
Estimated Delivery
Delivery usually takes 5–7 business days after dispatch. Customs clearance and local carrier conditions may affect the actual delivery date.
Cancellation and Faults
All sales are final and non-refundable. A cancellation may be requested before handover to the carrier and is subject to a 25% cancellation fee. Orders cannot be cancelled after handover to the carrier. Faulty-on-arrival miners are handled by repair or replacement only after diagnosis.
Contact us at store@bt-miners.com or 813-820-0668 if you have any questions.
All products on our website are priced in US Dollars.
Payment made by credit or debit card may be subject to card processing fees.
We can accept payment by credit or debit card, wire transfer, ACH transfer (through our online portal), and crypto.
Bank transfer clearing times vary by bank and location. Cryptocurrency payments are typically confirmed within 1 business day.
*Machine prices will fluctuate according to the current market price.*
Customs & Delivery
Shipments are managed through DHL, UPS and FedEx for most international destinations. Due to changing regulations, we may not be able to cover import duties for all orders entering the USA. Deliveries to other countries may require customers to clear customs and pay duties or taxes. Please notify us promptly if customs requests documents, as improper or delayed filing may result in additional fees or delays.
DDP Option
Delivery Duty Paid (DDP) service may be available in select countries. Advance arrangement is required; please contact store@bt-miners.com for details.
Returns for Repair or Replacement
If diagnosis requires a miner to be returned to Hong Kong or another service location, the customer is responsible for related shipping charges unless otherwise agreed in writing.
All sales are final and non-refundable. A cancellation may be requested before handover to the carrier and is subject to a 25% cancellation fee. Orders cannot be cancelled after handover to the carrier. Eligible faulty-on-arrival cases are handled by repair or replacement only.
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FAQs
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What Is The Lifespan Of This Mining Machine?
The lifespan of mining hardware is influenced by usage intensity, environmental factors like temperature, humidity, and dust. Proper maintenance and optimal conditions can significantly extend its longevity.
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How Does Electricity Cost Impact Profitability?
Electricity costs play a crucial role in mining profitability, as high rates can quickly offset profit. Therefore, it is vital to access local electricity costs to determine if mining is viable. With high electricity costs and high liquidity of digital assets, investing in an energy-efficient miner becomes even more important.
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Does BT-MINERS offer worldwide shipping?
Yes, fast worldwide delivery is available.
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Is a power supply included?
Power configuration depends on batch and order details.
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Does BT-MINERS test the miner before shipping?
Yes, all units are tested prior to dispatch.
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How noisy is the miner?
Like most air-cooled ASICs, it produces high operational noise.
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Does it require liquid cooling?
No, it uses an air-cooling system.
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What voltage does it require?
Standard 220–240V power input.
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Is the A3 Air suitable for home mining?
It is primarily designed for professional or hosted environments due to noise and heat.
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How much power does the A3 Air consume?
Approximately 3250W under standard conditions.
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Which coins can it mine?
Bitcoin (BTC), Bitcoin Cash (BCH), and Bitcoin SV (BSV).
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What algorithm does the SealMiner A3 Air use?
It uses the SHA-256 algorithm.
