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Bitdeer

Bitdeer SealMiner A3 Air (260TH)

Model: SealMiner A3 Air

Condition: new

260 TH/s air-cooled SHA-256 miner from Bitdeer's SealMiner series. 14.0 J/TH efficiency at 3,640W. Bitdeer's first in-house mining hardware for Bitcoin. Includes warranty and free DDP shipping from MillionMiner.

260 TH/s 3640W SHA-256 14 J/TH

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Genuine

Tested hardware

Worldwide

Global shipping

Support

Mining experts

Hashrate

260 TH/s

Power

3640 W

Efficiency

14.00 J/TH

Noise

75 dB

Estimated Mining Returns

Based on current BTC price & network difficulty. Indicative only.

Period Daily Weekly Monthly
Income
$9.44 $66.08 $283.20
Electricity
-$6.99 -$48.93 -$209.70
Profit
$2.45 $17.15 $73.50

Using 0.080 $/kWh · Network difficulty as of today. Estimates only.

Adjust rate in the bar above

Full Specifications

Hashrate 260 TH/s
Power Consumption 3640 W
Efficiency 14.00 J/TH
Algorithm SHA-256
Model SealMiner A3 Air
Release Year Oct 2025
Noise Level 75 dB
Dimensions 365 x 292 x 197mm
Weight 15 g
Voltage 220-277v
Interfaces Ethernet
Operating Temp -20-45°C
Humidity 10-90%
Cooling Type Air

What's in the Box

SealMiner A3 Air
Power supply unit (PSU)
Power cables
Quick start guide

Contents may vary by batch. Exact items listed in order confirmation.

Quick Setup

1

Connect PSU to miner and plug into the outlet

2

Connect ethernet cable to your router or switch

3

Find miner IP via router admin or IP scanner tool

4

Open web interface, enter pool URL and wallet — start mining

Product Details

Bitdeer SealMiner A3 Air 260 TH/s SHA 256 Bitcoin Miner on SEAL02 Chip

The Bitdeer SealMiner A3 Air produces 260 TH/s at 3,640W on SEAL02 proprietary chip at approximately 14.0 J/TH. It is the standard bin model in Bitdeer's air cooled A3 series, below the A3 Pro Air (290 TH/s at 3,625W, 12.5 J/TH).

Same 365 x 292 x 197mm chassis at 15.5 kg. Same SEAL02 silicon. Same firmware and management interface. Same minus 20 to 45 degrees Celsius operating range, the widest cold tolerance in current air cooled Bitcoin miners. Container deployments in Canada, Russia, Nordic countries, and other sub zero climates operate year round without intake air heating.

For fleet buyers choosing between the A3 Air and A3 Pro Air, the decision mirrors every standard versus pro comparison in mining hardware. The A3 Air costs less per unit. At cheap electricity below $0.04 per kWh, the daily cost difference between 14.0 and 12.5 J/TH is small. More A3 Air units for the same capital produces higher total fleet hashrate. At expensive power, the Pro's better efficiency justifies its premium through daily savings over the deployment horizon.

Bitdeer (NASDAQ: BTDR) designs its own ASIC chips under the SEAL program and also operates large scale mining farms. This vertical integration means the A3 Air was designed with input from real production data, thermal conditions from actual facilities, and maintenance access patterns from on site operations.

220 to 277V at 75 dB. Ethernet connectivity. 10 to 90 percent humidity. Mines Bitcoin, Bitcoin Cash, and all SHA 256 proof of work coins.

SealMiner A3 Air 260 TH/s Standard Air Cooled Bitcoin Miner at 14.0 J/TH

Standard bin in Bitdeer's A3 air cooled series. 260 TH/s at 3,640W on SEAL02 chip. Same chassis, firmware, and minus 20 degree cold floor as the A3 Pro Air (290 TH/s). Only chip binning differs. Lower acquisition cost per unit.

The minus 20 degree operating floor is shared across both bins. Standard bin pricing gives you cold climate capability at a lower entry point. Container and outdoor deployments in sub zero regions work without intake heating on both A3 Air and A3 Pro Air.

Bitdeer (NASDAQ: BTDR) designs its own silicon and operates mining farms. Hardware reflects real operational data, not just lab specifications. 365 x 292 x 197mm at 15.5 kg. 220 to 277V at 75 dB. Approximately 14.0 J/TH. Ethernet. Bitcoin, Bitcoin Cash, all SHA 256 coins.

For fleet buyers comparing A3 Air to the Canaan Avalon A16, the A3 Air trades higher hashrate and efficiency for minus 20 degree cold floor capability. A facility in a temperate or warm climate may favor the A16. A container deployment in a cold climate gives the A3 Air an infrastructure cost advantage by eliminating heating systems.

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SealMiner A3 Air 260 TH/s SHA 256 Bitcoin Miner on SEAL02 Chip

Bitdeer SealMiner A3 Air. 260 TH/s SHA 256 at 14.0 J/TH on SEAL02 chip. Standard bin below the A3 Pro Air (290 TH/s, 12.5 J/TH). Same chassis, same minus 20 to 45 degree range, same firmware. Lower per unit cost for fleet scaling. 3,640W at 220 to 277V. 75 dB. 15.5 kg at 365 x 292 x 197mm. Ethernet. Bitcoin, Bitcoin Cash, all SHA 256 coins. 10 to 90 percent humidity. Bitdeer (NASDAQ: BTDR) operates its own mining farms globally. Fleet buyers can mix A3 Air with A3 Pro Air units on the same infrastructure.

260TH First-Party Bitdeer ASIC

Bitdeer's first proprietary miner. 260 TH/s designed by a company with years of large-scale mining operations experience.

14.0 J/TH Air-Cooled Design

Current-generation efficiency without liquid cooling complexity. Standard ventilation deployment for existing mining infrastructure.

Free DDP, Warranty Included

Ships brand new from MillionMiner with manufacturer warranty. All customs and import duties covered worldwide.

FAQ

Frequently Asked Questions

It is Bitdeer's first proprietary Bitcoin ASIC miner, delivering 260 TH/s of SHA-256 hashrate at 14.0 J/TH efficiency.

Bitdeer is a publicly listed company (BTDR) with extensive experience in cloud mining and hosting. The SealMiner is their first in-house hardware product.

The A3 Air draws 3,640W at full load, achieving 14.0 J/TH. A dedicated electrical circuit is required.

Bitcoin (BTC), Bitcoin Cash (BCH), and all other SHA-256 algorithm cryptocurrencies.

Yes. The A3 Air model uses standard air cooling, making it suitable for any mining facility with proper ventilation and no liquid infrastructure.

The A3 Air competes in the same efficiency tier. Bitdeer's advantage is hardware designed by a company that operates mining at industrial scale.

Yes. The SealMiner A3 series includes the A3 Hydro (500TH) and A3 Pro Hydro (660TH) for liquid-cooled deployments.

Ships brand new with manufacturer warranty through MillionMiner. All units are factory sealed.

Yes. Free DDP delivery worldwide covers all customs clearance, import duties, and taxes.