EMP Shield Concealed Home EMP & Lightning Protection With Remote LEDs | SP-120-240-RL

EMP Shield Concealed Home EMP Protection Hides Inside Your Breaker Box While Its Remote LEDs Stay In Plain View

The SP-120-240-RL is the concealed version of EMP Shield's home model for 120/240V split-phase service. It connects to your breaker panel and guards the circuits that panel feeds. EMP Shield says it protects against all three phases of an EMP (E1, E2 and E3), coronal mass ejections (CME), lightning and everyday power surges. The RL in the model number stands for remote LED.

This version is meant for homes with a flush-mounted breaker panel, where a box on the outside of the wall is not practical. The unit sits inside the breaker box, and a small LED box mounts on the outside so you can still check it.

EMP Shield Concealed Home EMP Protection Features

Mounts Inside A Flush Panel For A Clean Wall

For non-surface-mount installs, EMP Shield says to secure the unit inside the breaker box and connect the LED box on the exterior. Only a small square with two lights shows on the wall. EMP Shield says this RL version comes with a terminal block for 12 AWG copper wire.

Remote LEDs Report Status Without Opening The Panel

The remote box carries two green diagnostic lights, labeled L1 and L2, one for each leg of your split-phase service. When power is restored after the install, EMP Shield says the lights turn on to show the unit is installed and monitoring incoming power.

228kA Surge Capacity Across Three Protection Modes

EMP Shield rates the unit for a surge capacity of 228kA (114kA nominal discharge current). It lists line-to-line, line-to-neutral and line-to-ground protection modes. Each phase is independently fused and has its own solid-state semiconductor circuitry.

Responds To Over-Voltage In Under A Nanosecond

EMP Shield says the unit begins shunting over-voltage in less than one nanosecond, steering excess energy away from your equipment. EMP Shield also lists IEEE C62.41-1991 category A and B combination wave suppression for this model family.

Independent Lab Testing Reported By EMP Shield

EMP Shield reports testing at Keystone Compliance to MIL-STD-188-125-1, MIL-STD-461G, MIL-STD-464C and RS-105. Keystone Compliance does not endorse products. EMP Shield states its products are listed by the Department of Homeland Security in its EMP resilience report, and it describes this unit as UL 1449 Type 2 compliant.

NEMA 4 Enclosure Made In Kansas

The main unit is housed in a NEMA 4 plastic enclosure with one conduit entrance port. EMP Shield is a veteran-owned company and builds its units in Kansas, USA.

Real-World Applications

Primary Residences. EMP Shield says its home model covers the home electrical system, from major appliances to delicate electronics, by intercepting surges before they reach connected devices.

Homes With Recessed Panels. The RL version is the home model EMP Shield designed for a non-surface-mount panel set into the wall.

Cabins, Rentals And Off-Grid Homes. EMP Shield lists these for its home models. A unit that watches the panel full time suits a property you may not visit every week.

Practical Comparison

Concealed RL Model Versus Wired W Model

The wired SP-120-240-W comes with preconnected 12 AWG copper leads and mounts beside a surface-mount panel, with its two lights on the unit itself. The RL model goes inside the breaker box and moves the lights to a separate LED box. Both are built for 120/240V split-phase service, so the choice comes down to how your panel is mounted.

Panel Unit Versus Plug-In Power Strip Surge Protector

A power strip surge protector only covers what is plugged into it. A panel-connected unit works at the breaker box, so the circuits fed by that panel are covered, including hardwired major appliances that never touch a power strip.

Panel Unit Versus Faraday Bag Or Cage

A Faraday bag or cage shields spare electronics stored inside it, unplugged and out of use. The concealed home unit covers the wiring and equipment you use every day.

Buyer Guidance

Where It Installs

EMP Shield says to place the unit as close as possible to the branch circuit breaker panel with minimal lead length, and to leave at least one inch of clearance from the edge of the panel cover. Mount the LED box where the lights are easy to see.

Who Should Install It

EMP Shield says installation is by a licensed electrician, following local electrical codes. The unit must be on a line served by a disconnect, such as 20-amp circuit breakers or a 20-amp fused disconnect switch, and its leads must never go directly to the service entrance lugs. EMP Shield puts the job at 10 to 15 minutes for a licensed electrician.

This May Be A Good Fit If

• Your home has 120/240V split-phase service
• Your breaker panel is flush-mounted in the wall
• You want status lights you can see without opening the panel
• A licensed electrician will handle the install

Common Questions

What Does It Mean If A Light Goes Out?

EMP Shield says that if a diagnostic light shuts off during normal operation, an electrician should check whether power is present on that phase. If power is there, the unit should be replaced or upgraded as soon as possible.

Can It Handle Sustained Over-Voltage?

EMP Shield notes that its devices may not survive sustained overvoltages. It designed them for high-voltage transients.

Should I Also Protect My Internet Line?

EMP Shield highly recommends using its home model together with its Internet model, so the data line coming into the house is covered too.

What Warranty Does EMP Shield Provide?

EMP Shield gives a 10-year limited warranty against defects in materials and workmanship and will repair or replace a defective unit. If lightning destroys the unit, EMP Shield replaces it for $50 when you send in the destroyed unit. A separate EMP Shield protection policy can reimburse damaged connected electronics up to $25,000 when its conditions are met, such as a licensed electrician install and a claim within 30 days.

What's Included

• 1 x EMP Shield SP-120-240-RL Concealed Home Unit With Remote LED Box

Whole-Panel Coverage Behind A Closed Door

The EMP Shield Concealed Home EMP Protection unit brings EMP, CME, lightning and surge protection to a flush-mounted 120/240V panel without changing the look of the wall. If you are not sure whether your panel calls for the RL or the wired model, the Outbound Power team is glad to help you choose.

EMP Shield SP-120-240-RL Manual