Bitmain Antminer S21 Immersion Bitcoin Miner
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Overview
The Bitmain Antminer S21 Immersion 220T is a professional immersion-cooled ASIC miner developed for the SHA-256 algorithm and Bitcoin mining, with support for BTC, BCH and BSV networks. In Normal Energy Mode at a 30°C inlet oil temperature, it is rated for a typical hashrate of 220Th/s and power consumption of 3520W, delivering 16J/TH efficiency. The miner requires a 380–415V three-phase AC supply and a dielectric-oil immersion system capable of maintaining a 30–55°C inlet temperature with 1.0m³/h oil flow. Its RJ45 Ethernet 10/100M interface enables wired network integration, while the 293 × 236 × 364mm chassis and 17.15kg net weight suit professionally planned, high-density mining facilities.
Specification
| Manufacturer | Bitmain |
| Model | Antminer S21 Immersion (220T) |
| Also known as | Bitmain Antminer S21 Immersion 220T |
| Release | July 2024 |
| Weight | 17.15kg |
| Size | 293 × 236 × 364mm |
| Noise level | 50db |
| Voltage | 380–415V AC, three phase |
| Power | 3520W |
| Interface | RJ45 Ethernet 10/100M |
| Temperature | 30–55°C inlet oil |
| Warranty | 365 Days |
Bitmain Antminer S21 Immersion FAQs
The S21 Immersion 220T is a dedicated SHA-256 ASIC miner. It is designed primarily for Bitcoin mining and can also process compatible SHA-256 networks such as Bitcoin Cash and Bitcoin SV.
In Normal Energy Mode at a 30°C inlet oil temperature, the miner is rated for a typical 220Th/s hashrate, 3520W power consumption and 16J/TH efficiency. BITMAIN notes that actual hashrate may vary by ±3%, while power and efficiency may vary by ±5%.
Yes. This model is designed to operate in a compatible dielectric-oil immersion system and is not a standalone air-cooled miner. The installation must maintain an inlet oil temperature of 30–55°C and an oil flow of 1.0m³/h while the miner is operating.
The miner requires a 380–415V three-phase AC supply at 50–60Hz and has a specified maximum input current of 12A. Electrical infrastructure and protection should be planned and installed by qualified professionals before operation.
Without packaging, the miner measures 293 × 236 × 364mm and weighs 17.15kg. Its packaged dimensions are 600 × 390 × 450mm with a gross weight of 20.45kg.
The miner uses a wired RJ45 Ethernet 10/100M connection. After it is connected to the local network and immersion infrastructure, users can access the management interface, configure a compatible SHA-256 mining pool and monitor operating status.
Main Parameters
| Mineable Coins | Bitcoin |
|---|---|
| Algorithm | SHA-256 |
| Hashrate | 220Th/s |
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Bitmain Antminer S21 Immersion Bitcoin Miner
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