Tripp Lite
1111 W. 35th Street
Chicago, IL 60609
1 773.869.1774
1 773.869.1329

Protect It! 8-Outlet Industrial Safety Surge Protector, 12-ft. Cord, 1500 Joules, Cord Wrap, Hang Holes

Model Number: TLM812SA

Protect your crew and your equipment with this 1500-joule Industrial Safety Surge Suppressor. 8 outlets accommodate up to 3 transformers and come with 4 safety covers to prevent unused outlets from causing a shock hazard. Its rugged metal case follows OSHA color guidelines and features an integrated cord wrap with hang holes for easy storage and transportation. The TLM812SA is the perfect surge suppressor for keeping your crew and your equipment safe–even in the harshest environments.
  • 8 outlets (including transformer outlets and 4 safety covers)
  • 12 ft. cord
  • 1500 joule rating
  • Cord wrap with hang holes
  • Rugged metal case

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1 773.869.1774


This Tripp Lite surge suppressor is designed to provide safe, reliable surge protection in harsh environments. A high 1500 joule rating can protect connected equipment against even the strongest surges. 8 outlets protect connected equipment against damaging surges, spikes and line noise. Convenient transformer outlets accommodate multiple transformers without blocking other outlets. A 12 ft. grounded cord with integrated cord clip reaches distant outlets. A lighted on/off switch with integrated circuit breaker provides power control over connected equipment. Breaker protects against dangerous system overload. Protected LED confirms that connected equipment is being protected. 4 safety covers shield unused outlets from debris and accidental contact. A rugged metal case stands up to the harshest environments. Built-in cord wrap with hang holes provides convenient cord management. Integrated keyhole slots on bottom panel provide convenient wall/desk mounting. Tripp Lite will repair or replace any connected equipment damaged by surges, including direct lightning strikes, up to $50,000 and for life! As an added safety feature, the surge suppressor's bright yellow color alerts you and others that power cords and tools are in use.


  • 8 OUTLETS protect connected equipment against damaging surges, spikes and line noise
  • 12 FT. GROUNDED CORD with INTEGRATED CORD CLIP reaches distant outlets.
  • LIGHTED ON/OFF SWITCH with INTEGRATED CIRCUIT BREAKER provides power control over connected equipment. Breaker protects against dangerous system overload.
  • PROTECTED LED - If this green LED ever goes out, Tripp Lite will replace your surge suppressor under warranty at no charge!
  • CONVENIENT TRANSFORMER OUTLETS accommodate multiple transformers without blocking other outlets.
  • 4 SAFETY COVERS shield unused outlets from debris and accidental contact.
  • RUGGED METAL CASE stands up to the harshest environments.
  • CORD WRAP with HANG HOLES provides convenient cord management.
  • INTEGRATED KEYHOLE SLOTS on bottom panel provide convenient wall/desk mounting.
  • 1500 joules of surge protection
  • OSHA color guidelines, outlined in Document 1910.145, alert users to hazardous situations, which may cause minor or moderate injury. This Tripp Lite product complies with those guidelines.
  • $50,000 Ultimate Lifetime Insurance (U.S., Canada, and Puerto Rico only)
  • Automatic shutoff permanently cuts power to outlets if protection circuit is incapacitated, preventing equipment damage and indicating replacement is required

Package Includes

  • TLM812SA Safety Surge Suppressor
  • 4 safety covers
  • Owner's manual
RoHS compliant


UPC Code037332140074
Frequency Compatibility60 Hz
Output (Watts)1800
Output Receptacles(8) 5-15R
Circuit Breaker (amps)15
Overload ProtectionCombo power switch and circuit breaker
Transformer Accommodation(6) Yes
Outlet Orientation1 bank of 5, 1 bank of 3 (transformer outlets)
Right-Angle OutletsNo
Nominal Input Voltage(s) Supported120V AC
Recommended Electrical Service120V (110-125V)
Input Cord Gauge Type14 gauge; SJT
Voltage Compatibility (VAC)120
Maximum Surge Amps60000
Input Plug TypeNEMA 5-15P
Input Cord Length (ft.)12
Right-Angle PlugNo
Integrated Cord ClipYes
Diagnostic LED(s)Yes
SwitchesCombination AC circuit breaker and 2 position lighted on/off power switch
Diagnostic LED Details1 green "protected" LED confirms surge suppression is present
AC Suppression Joule Rating  1500
AC Suppression Response Time  < 1 ns
Protection ModesIncludes full normal mode (H-N) and common mode (N-G/H-G) line surge suppression
Clamping Voltage (RMS)  150
EMI / RFI Filtering  Up to 20 dB
Auto Shut-OffYes
Telephone/DSL ProtectionNo
Cable (Coax) ProtectionNo
Network (Ethernet) ProtectionNo
Anti-Microbial ProtectedNo
ColorBlack; Yellow
Color (AC Line Cord)Yellow
Integrated Keyhole Mounting SlotsYes
Keyhole Slot Mounting Measurement (Center to Center)145mm
Material of ConstructionMetal
Outlets Measurement (Center to Center)Distance between standard outlets = 25.40mm; Distance between standard and transformer outlets = 50.80mm
Receptacle ColorBlack
Shipping Dimensions (hwd / in.)11.70 x 2.10 x 7.90
Shipping Weight (lbs.)3.50
Unit Dimensions (hwd / in.)10.26 x 5.13 x 1.57
Unit Weight (lbs.)4.52
ApprovalscULus, RoHS
Product Warranty Period (Worldwide)Lifetime limited warranty
Connected Equipment Insurance (U.S., Canada & Puerto Rico)$50,000 Ultimate Lifetime Insurance 

Frequently Asked Questions

It’s a surge protector’s job to stop a voltage fluctuation or lightning strike from damaging the sensitive electronic equipment connected to it but it does so by sacrificing itself. Once a power surge has been blocked, your surge protector may no longer provide protection. Many of our surge protectors include an LED “protection” indicator that indicates that surge suppression are intact and providing protection against surges.
A surge protector will protect your electronics by acting as an “electrical sponge” by clamping down on spikes, “soaking them up” and converting the excess energy into heat, thus preventing the spikes from passing through the surge protector into the sensitive electronic devices and damaging them. As with any “sponge” a surge protector has a limited absorption capacity. Once that capacity is reached, the unit is no longer able to protect and must be replaced.
Please do not plug a surge protector into a UPS. This may void the UPS warranty. Tripp Lite UPS products have surge suppression. For additional surge protection, plug a Tripp Lite surge protector into a wall outlet and plug the UPS into the surge protector. Please remember that the equipment you want to run during a power loss must be plugged into only the battery side of the UPS. For additional outlets, plug a Tripp Lite power strip into the UPS. Do not overload the UPS.
Some Tripp Lite Audio/Video surge protectors are equipped with an audible alarm. This feature immediately alerts you to damaged internal protection circuitry. If the surge protector is the source of the alarm, your unit requires replacement. There are a few reasons why the audible alarm will sound: 1. A power surge occurred that damaged the unit's internal components. 2. In the event that the surge protector has been in service for a number of years, the internal protection components of the unit may have expired. 3. The unit may be faulty.
In the event that a power surge has occurred, and one or more devices connected to a Tripp Lite surge protector have been damaged, you may be eligible to file a claim under our Ultimate Lifetime Insurance program. However, to make an eligible claim regarding a Network surge protector, a Tripp Lite AC line surge protector must also be used in conjunction with it. Also, the surge protector can be replaced under warranty. Please see the link below for further details about Tripp Lite's Ultimate Lifetime Insurance Policy and the steps required to file a claim:
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Additional FAQs may be available on the TLM812SA model support page.

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Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at 1 773.869.1774 or email