$/kWh
Bitmain
Model: Antspace HK3 (DWT-C)
20-foot hydro mining container from Bitmain (internally: Antbox H3 Version 6) supporting up to 210 Antminer Hydro units at 1,030KW working power. Two-piece stackable system: mining container plus DWT-C industrial… cooling tower. Compatible with Antminer S19 Hydro, S21 Hydro, and S23 Hydro series. PUE 1.034. 380 to 415V AC three phase 50/60Hz. 1,600A/2,000A main switch, 1,250A rated current. 2,500KVA transformer supports 2 HK3 containers simultaneously. AI facial recognition door access, video monitoring, water leakage detection, fire protection, one-button emergency stop. Certified NFPA 79:2021, UL 508A, CSA C22.2, ISO 12100, IEC 60204. China Classification Society structural certification. 6,058 x 2,438 x 2,896 mm at approximately 3.8 tons. Ambient operating range negative 25 to 40 degrees Celsius.
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20-foot hydro mining container from Bitmain (internally: Antbox H3 Version 6) supporting up to 210 Antminer Hydro units at 1,030KW working power. Two-piece stackable system: mining container plus DWT-C industrial… cooling tower. Compatible with Antminer S19 Hydro, S21 Hydro, and S23 Hydro series. PUE 1.034. 380 to 415V AC three phase 50/60Hz. 1,600A/2,000A main switch, 1,250A rated current. 2,500KVA transformer supports 2 HK3 containers simultaneously. AI facial recognition door access, video monitoring, water leakage detection, fire protection, one-button emergency stop. Certified NFPA 79:2021, UL 508A, CSA C22.2, ISO 12100, IEC 60204. China Classification Society structural certification. 6,058 x 2,438 x 2,896 mm at approximately 3.8 tons. Ambient operating range negative 25 to 40 degrees Celsius.
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Pricing, lead time, and hosting options. Personal advice from our sales team.
Free quote, reply in 24h. No sales call.
4.7 / 5 on Trustpilot
Verified customer reviews
30,000+ miners delivered
Shipped worldwide since 2020
1,200+ customers globally
Trusted in 50+ countries
The Antspace HK3 is the hydro counterpart to the air cooled Antbox N5 V2 in Bitmain's container lineup. Where the N5 V2 houses 180+ air cooled miners at 658KW with forced air ventilation, the HK3 houses 210 hydro miners at 1,030KW with an integrated liquid cooling loop managed by the DWT-C industrial cooling tower. The result: 1.6 times the miner density, 1.5 times the power capacity, and PUE 1.034 versus 1.10 to 1.25 for typical air cooled containers.The system ships as two stackable pieces: the 20-foot mining container and the DWT-C cooling tower. The container holds miner racks, power distribution (1,600A/2,000A main switch, 1,250A rated current, 30 PDUs), network infrastructure, and… safety systems. The DWT-C cooling tower handles coolant circulation and heat rejection across the full negative 25 to 40 degree Celsius ambient range, maintaining inlet water temperatures within the operating window for all supported hydro miners.Compatible hardware: Antminer S19 Hydro, S19 Pro Hydro, S21 Hydro, S21 XP Hydro, S21+ Hydro, and S23 Hydro series per Apexto documentation. Capacity is rated at 210 units but may adjust based on per-miner power draw. At 3,200 to 3,600W estimated per unit, 210 miners draw 672KW to 756KW. Working power range is 1,030KW to 1,050KW, providing headroom for higher draw S23 Hydro units at 5,510W (though 210 S23 Hydro units at 5,510W would total 1,157KW, exceeding capacity, so S23 Hydro deployments would run fewer units).Power distribution mirrors the N5 V2 architecture: 380 to 415V AC three phase 50/60Hz input, 1,600A/2,000A main switch, 1,250A rated current. Input cable: Single Core 600kcMil (300mm squared) x4x5, rated above 600V. A 2,500KVA transformer supports 2 HK3 containers running simultaneously (versus 3 Antbox N5 V2 containers on the same transformer), reflecting the HK3's higher power draw.Safety certifications are comprehensive and matter for institutional deployments requiring insurance coverage and code compliance: NFPA 79:2021 (electrical standard for industrial machinery), UL 508A:2018 R8.21 (industrial control panels), CSA C22.2 No. 14-18 (Canadian electrical), ANSI/ISO 12100:2012 (machinery safety), IEC 60204 Ed 5.1 2009 (electrical equipment of machines), plus China Classification Society structural certification.Operational safety systems: AI facial recognition door lock restricts container access to authorized personnel, video monitoring provides visual security surveillance, water leakage detection alerts to coolant system failures before damage occurs, fire push rod lock provides fire safety isolation, and one-button emergency stop shuts down all systems immediately.Site requirements per Bitmain documentation: hardened ground surface rated for at least 25-ton load. 20-ton crane for loading and unloading both container and cooling tower. Leave at least 2 meters of air inlet space around the cooling tower. Operating elevation below 2,000 meters; above 1,000 meters, reduce installed miner count by approximately 1% per additional altitude increment. Not included with the product: stairs, walkway boards, transformers, cables, bridges, cable distribution boxes, and other external facilities. Door opens left by default; notify Bitmain sales if right-opening is needed for site layout.6,058 x 2,438 x 2,896 mm at approximately 3.8 tons empty (container only, excluding miners and cooling tower). Currently out of stock at MillionMiner. MillionMiner also offers its own hydro container alternative: MM-Hydro-Vault 210. Free DDP delivery when available.
The Antspace HK3 is Bitmain's purpose-built hydro mining container, pairing with their Antminer Hydro lineup for a manufacturer-integrated deployment at facility scale. 210 hydro miners at 1,030KW working power inside a single 20-foot container with PUE 1.034, meaning only 3.4 percent of total energy goes to cooling overhead. For comparison, traditional air cooled container PUE runs 1.10 to 1.25.Ships as a two-piece stackable system: the mining container and the DWT-C industrial cooling tower. The DWT-C handles water circulation temperature… control across the full negative 25 to 40 degree Celsius ambient range, keeping miners within safe operating temperatures in both winter cold starts and summer peak heat. Compatible with Antminer S19 Hydro, S21 Hydro, S21 XP Hydro, and S23 Hydro series. Capacity may adjust based on per-miner power consumption (estimated 3,200 to 3,600W per unit).Security and safety systems are institutional grade: AI facial recognition door lock, video monitoring, water leakage detection, fire push rod lock, and one-button emergency stop. Certifications span NFPA 79:2021, UL 508A:2018, CSA C22.2, ISO 12100, IEC 60204, and China Classification Society structural. These matter for insurance underwriting and industrial site compliance.380 to 415V AC three phase. 1,600A/2,000A main switch at 1,250A rated current. A 2,500KVA transformer supports 2 HK3 containers simultaneously (420 miners total). Client provides: transformer, foundation (25-ton load rating per Bitmain), 20-ton crane, stairs, walkway boards, cables, cable distribution boxes. Currently out of stock at MillionMiner.
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20-foot hydro mining container for up to 210 Antminer S19/S21/S23 Hydro miners at 1,030KW working power. Two-piece system: container plus DWT-C cooling tower. PUE 1.034. 380 to 415V three phase, 1,600A/2,000A main switch. AI facial recognition access, video monitoring, leak detection, fire protection, emergency stop. Certified NFPA 79, UL 508A, CSA C22.2, ISO 12100, IEC 60204 plus China Classification Society structural. 2,500KVA transformer supports 2 containers. 6,058 x 2,438 x 2,896 mm at 3.8 tons. Ambient negative 25 to 40 degrees Celsius.
Only 3.4 percent cooling overhead versus 10 to 25 percent for air cooled containers. 1,030KW working power in a 20-foot footprint.
Year-round hydro cooling across all climates. Two-piece stackable system: container plus cooling tower ship separately.
Institutional grade safety certifications for insured and code-compliant industrial mining deployments. AI access and emergency stop.
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Antminer S19 Hydro, S19 Pro Hydro, S21 Hydro, S21 XP Hydro, S21+ Hydro, and S23 Hydro series. Capacity is rated at 210 units but adjusts based on per-miner power consumption. At S23 Hydro's 5,510W per unit, fewer than 210 would deploy to stay within the 1,030KW working power.
Power Usage Effectiveness measures total facility power versus computing power. PUE 1.034 means only 3.4 percent of energy goes to cooling and infrastructure overhead. Air cooled containers typically run PUE 1.10 to 1.25, meaning 10 to 25 percent overhead. At 1MW scale, the PUE difference translates to tens of thousands of dollars in annual electricity savings.
The external industrial cooling tower that handles heat rejection for the hydro miners inside the container. Ships as a separate stackable piece alongside the mining container. Maintains coolant temperatures across negative 25 to 40 degree Celsius ambient conditions. Requires at least 2 meters of clear air inlet space on all sides for proper operation.
Two cooling tower variants paired with the HK3 container. The DWT-C is the model listed on MillionMiner. Both serve the same function with different specifications. Confirm which variant suits your climate and deployment conditions with MillionMiner sales.
380 to 415V AC three phase 50/60Hz. 2,500KVA step-down transformer recommended, supporting 2 HK3 containers simultaneously. Input cable: Single Core 600kcMil (300mm squared) x4x5, rated above 600V. 1,600A/2,000A main switch with 1,250A rated current inside the container.
Hardened ground surface rated for at least 25-ton load per Bitmain documentation. 20-ton crane for container and cooling tower placement. At least 2 meters of air inlet clearance around cooling tower on all sides. Operating elevation below 2,000 meters. Client provides: transformer, stairs, walkway boards, cables, cable distribution boxes, bridges, and cabling ladder.
NFPA 79:2021 (industrial electrical), UL 508A:2018 R8.21 (industrial control panels), CSA C22.2 No. 14-18 (Canadian electrical), ANSI/ISO 12100:2012 (machinery safety), IEC 60204 Ed 5.1 2009 (electrical equipment of machines), China Classification Society structural certification. These are critical for insurance underwriting, industrial site compliance, and institutional deployment approvals.
AI facial recognition door lock for controlled access. Video monitoring system for surveillance. Water leakage detection for early coolant failure alerts. Fire push rod lock for fire safety isolation. One-button emergency stop for immediate full system shutdown. These systems operate continuously during mining operations.
HK3: 210 hydro miners, 1,030KW, PUE 1.034, liquid cooled, two-piece system. N5 V2: 180+ air cooled miners, 658KW, forced air cooled, single container. The HK3 runs more miners at higher power density with dramatically lower cooling overhead. Tradeoff: hydro miners cost more than air cooled equivalents, and the DWT-C cooling tower adds infrastructure complexity.
The container and DWT-C cooling tower are designed as a stackable two-piece set. Bitmain support notes that if stacking multiple Antspace units vertically, notify sales regarding preferred door opening direction. Default door opens left.