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Redundant server power supply, silver metal enclosure, three cooling fans, 20+4 pin connector visible

iStarUSA Inc.

iStarUSA Inc. TC-300R8 2 x 300 W redundant server power supply

SKU CH-A4BW-Z6NSX MPN TC-300R8

Redundant 2 x 300 W server power supply with 20+4 pin connector, three fans and >100,000 hour MTBF

  • Max wattage2 × 300 W
  • Power efficiency> = 65%
  • Power supply redundancyRedundant
  • Main power connector20+4Pin
  • Output type+3.3 V@24A, +5 V@30A, +12 V@15A, +5VSB@2A
  • Supply voltage115 / 230 V
  • Redundant 2 x 300 W design keeps servers running if one module fails
  • Three cooling fans maintain airflow across both power modules
  • PS/2 form factor fits standard server chassis without modification
  • Auto-select AC input handles 115 V and 230 V without manual switching
  • MTBF exceeds 100,000 hours for long-term deployment confidence

Redundant 2 x 300 W Server Supply

The iStarUSA TC-300R8 is a redundant server power supply containing two 300 W modules in a PS/2 form factor. It delivers power through a 20+4 pin main connector and multiple voltage rails including +12V at 15 A. The unit operates on 115 V or 230 V input with automatic selection.

Suited For And Not Suited For

This supply fits servers requiring N+1 redundancy and a 20+4 pin motherboard connection. It is not for systems needing more than 300 W per module, builders requiring higher efficiency than 65 percent, or installations that need EPS12V connectors for modern CPU power.

Efficiency And Protection Baseline

Efficiency is rated at 65 percent or greater with a hold-up time of 16 ms minimum. Protections include over power, over voltage and short circuit safeguards. Three fans provide cooling and the MTBF exceeds 100,000 hours. A 24 to 20 power cable and power cord are included.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $238.99
Pricier than about 77% of the 3,798 comparable items (median $131.99).

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Specifications

Product
Brand nameiStarUSA
Model nameTC-300R8
Ports & slots
Output type+3.3 V@24A, +5 V@30A, +12 V@15A, +5VSB@2A
Power
Max wattage2 × 300 W
Power efficiency> = 65%
Power supply redundancyRedundant
Main power connector20+4Pin
Supply voltage115 / 230 V
AC input frequency50/60 Hz
Rated input current8A @ 115 V, 4A @ 230 V
Power hold-up time16 ms min.
Built-in protectionOver power; over voltage; short circuits
Size & build
Product dimensions6.9 in × 5.9 in × 3.4 in
Product weight9 lb (4.08 kg)
Shipping weight3.99 kg
Package size277 × 221 × 168 mm
In the box
In the boxTC-300R8
24 to 20 Power Cable
Power Cord
More details
Fan configuration3
Mean time between failures>100,000 h

Questions about this item

Should I pick a single 300 W module or the 2 x 300 W redundant version for my server?

The TC-300R8 is sold as a complete redundant assembly containing two 300 W modules; you cannot buy a single module separately.

What does the 300 W per module rating mean for actual system load?

Each module can deliver up to 300 W, so the server can draw a maximum of 300 W while still keeping full redundancy if one module fails.

What mains standard does the auto-select input support and what does it cap?

The auto-select input accepts 115 V or 230 V at 50/60 Hz, capping input current at 8 A on 115 V and 4 A on 230 V.

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