Whatsminer P21 Power Supply PSU 3300W M20 M21 series
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Whatsminer P21 3300W Switching Power Supply – Reliable Power for M10, M20S & M21S Miners
The Whatsminer P21 (model P21-12-3600-V1) is a 3,300-watt switching power supply engineered to deliver stable, high-current output to Whatsminer M10, M20S and M21S mining rigs. With a wide 200–277 VAC input range and dual 12 V rails providing up to 285 A on the main output and 12 A on the auxiliary rail, this PSU ensures your miners receive clean, consistent power under full load. The C19 connector enables straightforward installation with no adapter required.
Why Choose the P21 for Your Whatsminer Setup
The wide 200–277 VAC input range makes the P21 compatible with both 220 V and 240 V circuits commonly found in mining facilities across Asia, Europe and the Americas, eliminating the need for step-up or step-down transformers. The standard C19 plug connects directly to heavy-duty PDUs and industrial power strips without adapters.
Installation & Maintenance Tips
Before installing the P21, verify that your input circuit is rated for at least 20 A at the local mains voltage. Connect the C19 cable firmly—a loose connection under high current can generate heat and trigger protective shutdown. After powering on, confirm that the 12 V output reads within ±5 % on both rails using a multimeter or the miner's built-in voltage reporting. If you experience intermittent reboots, check the 20 A glass fuse on the input stage and inspect the output cable for damage before replacing the entire unit.
P21 PSU Technical Specifications
| Part Number | P21 |
| Category | Switching Power Supply |
| Input | 200-277VAC 50/60Hz 20A Max |
| Output 1 | 12V – 285A |
| Output 2 | 12V – 12A |
| Output Power | 3300W |
| Condition | New |
| Plug Type | C19 |
| Compatible Devices | Whatsminer M10, M20, M20S, M21, M21S |
Related Replacement Parts
- 20A 250V Glass Fuse – Whatsminer P21 PSU Repair
- BCX53 PNP Transistor – Whatsminer PSU P21
- 18P Data Cable – Whatsminer M21B PSU Connection
- HR1001A LLC Controller – Whatsminer Power Supply Repair
Need a quote for multiple units or have questions about compatibility with your mining setup? Contact us at contact@lys-sz.com — our team of mining hardware engineers is ready to help.
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