Lenovo 4P57A87055 Thinksystem 800W 230V Titanium Crps Hot-swap Power Supply V1.1

Lenovo 4P57A87055 800W Titanium Hot-Swap CRPS Power Supply

Overview

The Lenovo 4P57A87055 is an 800W, 230V Titanium-rated Common Redundancy Power Supply (CRPS) designed for hot-swap deployment in ThinkSystem server platforms. Titanium efficiency means the unit operates at or above 96% efficiency under typical loads — directly reducing heat output and operating costs in rack-dense data center environments where power draw compounds across dozens of nodes. Hot-swap capability lets you replace a failed unit without taking the host system offline, which matters in 24/7 infrastructure where planned downtime windows are limited or nonexistent. The CRPS form factor enables shared redundant power architectures across compatible ThinkSystem chassis, so a single spare can protect multiple systems rather than requiring per-server spares inventory. This is a Lenovo genuine factory-new component — not a grey-market or parallel-import unit — sourced direct from distribution.

Compatibility

The 4P57A87055 is designed for Lenovo ThinkSystem server platforms that accept the CRPS 800W 230V power supply form factor. Verify compatibility against your specific ThinkSystem chassis model before ordering — CRPS shared-bus configurations require matching wattage and voltage ratings across all installed units. This supply is rated for 230V AC input; confirm your rack PDU and facility power delivers the correct voltage. It is not interchangeable with 115V or 240V DC variants. Consult the ThinkSystem product guide for your chassis to confirm the 4P57A87055 is listed as a supported option — Lenovo publishes per-chassis compatibility matrices that specify which PSU option codes are valid for each server generation.

Installation Notes

Hot-swap installation requires the chassis to already have at least one functioning power supply providing system power before removing or inserting this unit. Align the CRPS module with the bay guide rails and seat firmly until the retention latch engages — partial seating will prevent the supply from making full backplane contact. Ensure rack airflow direction matches the PSU's exhaust orientation for your ThinkSystem chassis configuration. The 4 lb unit weight is manageable for a single-person install, but working in a populated rack requires care to avoid cable interference during insertion.