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Silver metal rectangular server power supply unit with six small cooling fans on the rear face

TOPOWER

TOPOWER TOP-500SSR4B 500W mini redundant server power supply

SKU CH-NXD5-3NAY7

A redundant 500 W server power supply with two hot-swappable modules, 6 × 40 mm forced-air cooling, and ATX 12 V / EPS 12 V output in a compact 199 × 150 × 86 mm PS/2 form factor

  • TypeRedundant Power Supply
  • Single/RedundantRedundant
  • Maximum Power2 x 500 W
  • Main Connector24Pin
  • Output500W x 2
  • Input Voltage100 - 240 V
  • Redundant dual 500 W modules keep servers running during a unit failure
  • Hot-swappable design lets you replace a module without shutting down the system
  • Six 38 mm fans deliver forced-air cooling across both power units
  • Compact 199 x 150 x 86 mm PS/2 form factor fits dense rack enclosures
  • MTBF exceeds 100000 hours for long-term reliability in continuous operation

Compact redundant power for 1U servers

The TOPOWER TOP-500SSR4B delivers two hot-swappable 500 W modules in a single PS/2-sized chassis. It targets administrators who need N+1 redundancy without sacrificing a second rack unit. The unit accepts 100–240 V input at 50/60 Hz and complies with IEC 62368-1 safety standards.

Installation fits standard PS/2 bays

The 199 x 150 x 86 mm frame slides into typical server bays and uses a 24-pin main connector. Six 38 mm forced-air fans cool the assembly; fan noise rises quickly under load. Hot-swap trays allow module replacement without tools, but the latch mechanism requires firm pressure to seat correctly. Verify cable routing clearance before closing the chassis door.

Sustained load shares current across modules

Power-sharing circuitry balances output between the two 500 W modules during continuous operation. MTBF exceeds 100,000 hours when both modules share the load evenly. Efficiency remains high across the 12 V and EPS 12 V rails during extended runs. The design is not suited for single-module loads approaching the 500 W limit for long periods.

Puntos fuertes

  • Redundant dual 500 W modules keep servers running during a unit failure
  • Hot-swappable design lets you replace a module without shutting down the system
  • Six 38 mm fans deliver forced-air cooling across both power units
  • Compact 199 x 150 x 86 mm PS/2 form factor fits dense rack enclosures
  • MTBF exceeds 100000 hours for long-term reliability in continuous operation

Especificaciones

BrandTOPOWER
ModelTOP-500SSR4B
TypeRedundant Power Supply
Single/RedundantRedundant
Maximum Power2 x 500 W
Main Connector24Pin
Output500W x 2
Input Voltage100 - 240 V
Input Frequency Range50/60 Hz
Fans6 x 38mm
MTBF>100,000 Hours
Dimensions199 x 150 x 86mm

Preguntas sobre este artículo

How can I verify the redundant modules are sharing load correctly after installation?

Check that both hot-swappable modules show active status LEDs and the system reports balanced current draw across the two 500 W outputs.

What comes in the box and what must I source separately?

The unit includes the redundant PS/2-size chassis with six 38 mm fans and a 24-pin main connector; power cables and mounting rails are not included.

Which capacity should I choose for a dual-processor server build?

The model delivers 2 x 500 W total, providing full redundancy at 500 W per module for dual-CPU configurations.

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