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Black 1U metal rack surge strip with four front and eight rear outlets and a 15 ft cord

CyberPower

CyberPower RKBS15S4F8R 15 ft 12 Outlets 3600 J Surge Protector

SKU CH-PFE3-B18DP MPN RKBS15S4F8R

Rack-mount surge protector with 12 NEMA 5-15R outlets, 3600-joule suppression, 15-foot cord and EMI/RFI filtering for 120 V equipment

  • Power outlets12 (4 x Front + 8 x Rear)
  • Outlet typeNEMA 5-15R
  • Cord length15 ft (4.57 m)
  • Supply voltage120 V
  • Supported voltage120 V AC
  • Output current rating15
  • 3600-joule rating absorbs large surges to protect connected equipment
  • 12 NEMA 5-15R outlets (4 front, 8 rear) distribute power to multiple devices
  • 15-foot cord with NEMA 5-15P plug reaches distant power sources
  • 1U rackmount metal housing fits standard cabinets horizontally or vertically
  • EMI/RFI filtering up to 50 dB reduces line noise for cleaner power

Rackmount Surge Suppressor

The CyberPower RKBS15S4F8R is a 1U rackmount surge protector built for server rooms and networking closets. It delivers 12 NEMA 5-15R outlets split between four front and eight rear positions. A 15-foot cord with a NEMA 5-15P plug connects to a standard 120V circuit. The metal chassis supports horizontal or vertical mounting.

Suits Demanding Installations

This unit fits administrators who need high joule protection and EMI/RFI filtering for dense equipment racks. The 3600-joule rating and 180,000-amp maximum surge current handle severe transients. Buyers needing 20-amp capacity or outlets beyond NEMA 5-15R should look at other models.

3600-Joule Suppression Rating

The single figure that decides fit is the 3600-joule AC suppression rating combined with a 400V clamping voltage. It determines how much transient energy the strip can absorb before equipment sees excess voltage. Verify that this rating matches the risk profile of your installation.

How it compares

Measured against everything we stock in Surge Protector Power Strips, at today’s prices. Recalculated every night.

Price $94.99
Pricier than about 80% of the 565 comparable items (median $37.99).

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Specifications

Product
Brand nameCyberPower
Product lineRackbar
Model nameRKBS15S2F10R
Product colorBlack
Power
Power outlets12 (4 x Front + 8 x Rear)
Outlet typeNEMA 5-15R
Supply voltage120 V
Supported voltage120 V AC
Output current rating15
Surge energy rating3600 J
Clamp voltage400 V
Protection typesN-H, N-G, H-G
Size & build
Cord length15 ft (4.57 m)
Product dimensions1.75 in (1U) × 17.5 in × 2.25 in
Product weight4.1 lb (1.86 kg)
Shipping weight2.72 kg
Package size635 × 356 × 178 mm
Environment & compliance
Certified standardsUL1363 UL1449 certified by ETL(USA), CSA C22.2(Canada)

Questions about this item

How do I mount the RKBS15S4F8R in a 1U rack space and what step is often missed?

Install the unit horizontally or vertically in a standard 1U opening using the integrated brackets; the step often missed is securing the 15 ft cord in the retention tray so it cannot pull loose under load.

Which component will need replacement after repeated surge events?

The internal metal-oxide varistors that absorb up to 3,600 joules degrade with each strike; once the protection LED extinguishes the suppressors are exhausted and the whole unit must be replaced.

What is the first limit reached when the strip runs continuously at full 15 A load?

The 15 A circuit breaker trips before thermal or joule limits are reached, cutting power to all 12 NEMA 5-15R outlets to protect the wiring.

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