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Black cube surge protector with three AC outlets and six USB-A ports

Tripp Lite

Tripp Lite TLP366CUBEUSBB 3-outlet 6 USB-A surge protector 540 joules

SKU CH-NPTN-Z3PSE MPN TLP366CUBEUSBB

A compact cube provides three AC outlets and six USB-A ports with 540 joules of surge protection

  • Power outlets3
  • Cord length3 Outlet + USB
  • Supply voltage120 V
  • Input connectionsType b 3pin na
  • Supported voltage120 V
  • Surge energy rating540 joules
  • Compact 3.2-inch cube fits tight workspaces and travel bags
  • 540-joule rating shields connected gear from dangerous power spikes
  • Six USB-A ports charge phones and tablets without extra adapters
  • Three spaced NEMA 5-15R outlets accept bulky transformer plugs side by side
  • Splits into two pieces so one half stays at the desk and the other goes mobile

Tripp Lite 3-outlet 6 USB-A surge cube

The Tripp Lite TLP366CUBEUSBB is a compact cube-shaped surge protector that provides three NEMA 5-15R outlets and six USB-A charging ports. It delivers a surge suppression rating of 540 joules to defend connected electronics against power spikes. The unit operates on 120-volt input and measures 3.2 inches by 3.15 inches by 3.15 inches.

Suits desks and travel.

This protector suits home offices, dorm rooms and hotel stays where a small footprint and multiple USB-A ports are useful. The cube splits into two sections so one half can stay at a desk while the other travels. It is not for appliances that demand higher joule ratings or for devices that require USB-C Power Delivery charging.

540-joule suppression rating

The single specification that decides suitability is the 540-joule AC suppression rating, which indicates the energy the unit can absorb before its protective components degrade. Buyers should match this figure to the value of the equipment they intend to protect.

How it compares

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

Price $49.99
Pricier than about 64% of the 565 comparable items (median $37.99).

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Specifications

Product
Brand nameTRIPP LITE
Model nameTLP366CUBEUSBB
Part numberTLP366CUBEUSBB
Product colorBlack
Power
Power outlets3
Supply voltage120 V
Supported voltage120 V
Surge energy rating540 joules
Size & build
Cord length3 Outlet + USB
Product dimensions3.2 in × 3.15 in × 3.15 in
Product weight470 g
Shipping weight0.66 kg
Package size152 × 127 × 127 mm
More details
Input connectionsType b 3pin na

Questions about this item

What does the 540 joule rating mean for everyday protection?

The 540 joule rating shows how much surge energy the unit can absorb before it wears out; higher joules mean longer life against repeated spikes.

Will the 3.2 inch cube block adjacent wall sockets?

The cube measures 3.2 in by 3.15 in by 3.15 in, so it will cover both sockets on a standard duplex outlet unless you use a short extension cord.

How do I use the split design without losing surge protection?

Keep the bottom section with the three NEMA 5-15R outlets plugged into the wall; the top USB section connects to it internally, so both halves stay protected.

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