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Black metal surge protector strip with four AC outlets and four USB ports, 6.0 ft cord

Tripp Lite

Tripp Lite TLM446USBB 4-outlet 450 J surge protector 6.0 ft 4 USB 4.2 A

SKU CH-31AA-X9HMD MPN TLM446USBB

Four-outlet surge protector rated at 450 joules with four USB-A ports sharing 4.2 amps and a 6.0-foot cord

  • Power outlets4
  • Outlet type5-15R
  • Cord length6.0 ft (1.83 m)
  • Supply voltage120 V
  • Input connectionsNEMA 5-15P
  • Supported voltage120 V AC
  • Protects connected devices with 450 joules of surge suppression
  • Charges up to four USB devices simultaneously from 4.2 A total output
  • Powers multiple AC appliances through four NEMA 5-15R outlets rated at 15 A
  • Extends reach to distant sockets with a 6.0 ft power cord
  • Filters EMI/RFI line noise for cleaner power delivery

4-Outlet Surge Protector with 4 USB Ports

The Tripp Lite TLM446USBB provides four NEMA 5-15R outlets and four USB-A ports sharing 4.2 amps of charging power. It suppresses surges up to 450 joules across H-N, N-G and H-G protection modes. A 6.0 ft cord with a NEMA 5-15P plug connects to a standard 120V outlet. The metal housing measures 1.75" x 1.87" x 11.40".

Suited for Desk Setups Needing USB Charging

This unit fits home, office or light industrial workstations where a few AC devices and multiple phones or tablets charge simultaneously. The 15 amp, 1875 watt capacity handles typical desktop loads. Buyers who need more than four AC outlets or a higher joule rating for sensitive server gear should look at other models.

450 Joule Surge Suppression Rating

The AC suppression joule rating of 450 joules is the key figure that defines how much surge energy the protector can absorb before it must be replaced. It meets UL 1449 3rd Edition, UL 1363 and cUL certifications and exceeds IEEE 587 category A&B specifications. Maximum spike amperage is rated at 35500A.

How it compares

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

Price $35.99
Typical for this category: the median of 565 items is $37.99.

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Specifications

Product
Brand nameTRIPP LITE
Model nameTLM446USBB
Product colorBlack
Power
Power outlets4
Outlet type5-15R
Supply voltage120 V
Supported voltage120 V AC
Output current rating15
Output power1875 W
Surge energy rating450 Joules
Protection typesH-N, N-G and H-G
Size & build
Cord length6.0 ft (1.83 m)
Product dimensions1.75 in × 1.87 in × 11.4 in
Shipping weight0.70 kg
Package size439 × 297 × 64 mm
In the box
In the boxTLM446USBB Protect It! 4-Outlet Surge Protector, Black Metal Housing
Owner's manual
Environment & compliance
Certified standardsUL1449 3rd EDITION
UL1363
cUL
Exceeds IEEE 587 category A&B specifications
More details
Input connectionsNEMA 5-15P
Maximum spike amperage35500A

Questions about this item

How do I mount the TLM446USBB and which step is often missed?

Use the keyhole slots on the metal housing to screw the unit to a wall or desk; the step people miss is leaving at least 6.0 ft of cord slack so the NEMA 5-15P plug reaches the 120 V outlet without tension.

What part of the TLM446USBB will need replacement after it absorbs surges?

The internal MOV components that provide the 450 joule rating degrade with each spike; once the protection indicator goes out the whole surge protector must be replaced because the modules are not user-serviceable.

What limit appears first when the four USB ports charge multiple tablets at once?

The four USB-A ports share a total of 4.2 A, so connecting several high-draw devices splits that current and each device charges more slowly than it would on a dedicated charger.

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