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Silver desktop server chassis with built-in fan and power supply label visible

NShi

NShi HRPG-450-3.3 3.3V 90A 297W Server Chassis

SKU CH-FC4S-ZJA36

A 3.3V 90A server power supply with active PFC, constant current limiting and remote sense, delivering 297W in a 1U low-profile chassis

  • Chassis styleDesktop
  • Active PFC corrects power factor for efficient AC use
  • Constant current limiting protects against overload damage
  • Remote sense maintains accurate 3.3V output under load
  • 100% burn-in test at 297W verifies full-load reliability
  • Five-year warranty backs continuous server operation

NShi HRPG-450-3.3 Server Chassis

This NShi server chassis integrates a Mean Well HRPG-450-3.3 single-output power supply delivering 3.3V at 90A for a total of 297W. It is designed for desktop-format systems requiring a compact, forced-air-cooled power solution with active PFC and full-range AC input.

Upgrade from lower-wattage or non-PFC units

The chassis replaces power supplies lacking active power-factor correction or constant current limiting. The jump is worthwhile when a build demands 100% full-load burn-in validation, remote sense capability and a DC OK signal for monitoring. It also adds remote ON/OFF control with a 5V 0.3A standby output.

297W capacity for dense 1U deployments

The unit comfortably handles continuous loads up to its rated output while maintaining no-load consumption below 0.5W. It withstands 300VAC surge input for 5 seconds and includes short-circuit, overload, over-voltage and over-temperature protections. Headroom diminishes when sustained draw approaches the 297W limit or when current-sharing is required beyond the supported 24, 36 or 48 configurations.

How it compares

Measured against everything we stock in Rackmount Server Cases, at today’s prices. Recalculated every night.

Price $620.99
Pricier than about 85% of the 1,006 comparable items (median $222.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Size & build
Chassis styleDesktop

Questions about this item

What form factor does the HRPG-450-3.3 chassis use for mounting?

The unit is a 1U low-profile desktop chassis designed to fit standard 1U rack or shelf spaces.

How is the power supply installed and what step is often missed?

Mount the chassis, connect the universal AC input, then wire the remote sense terminals to the load to compensate for voltage drop; skipping the sense wiring leaves the output unregulated at the load.

Which replaceable part should be checked during routine maintenance?

The built-in DC fan provides forced-air cooling; inspect it periodically for dust build-up or bearing noise and replace it if airflow drops.

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