HPE 800W Hot-Plug Power Supply P40425-B21

What It Is

The HPE 800W (P40425-B21) is an enterprise-class hot-plug power supply unit designed for continuous 24×7 operation in server infrastructure. This redundant-capable PSU supports hot-swap replacement, ensuring minimal downtime during maintenance or fault scenarios. It is intended for rack and tower server deployments requiring reliable, high-availability power delivery.

Technical Details

• Part Number (PN): P40425-B21
• Manufacturer: HPE
• Model: HPE 800W
• Output Power: 800 W
• Form Factor / Type: Hot-plug (hot-swappable)
• Class: Enterprise (24×7 operation)
• Redundancy Support: 1+1 redundant configuration for fault tolerance

Configuration & Options

• Unit is supplied as a single hot-plug PSU module; compatible with HPE server chassis supporting the 800W form factor.
• Redundant power configuration (1+1) can be achieved by installing two units in a supported server.
• Hot-plug capability enables online replacement without powering down the server.
• Exact server model compatibility must be verified at the time of order to ensure correct fit and electrical specification.

Operating Conditions

This PSU is engineered for sustained operation in data center or server room environments with controlled temperature and airflow. It is suitable for mission-critical workloads where power redundancy and serviceability are required. The hot-plug design supports maintenance procedures in live production environments, minimizing service interruption.