Square D QO2175SB Surge Protective Device, 25kA Whole-Home SurgeBreaker for QO Load Centers

What Is This?

This is a surge protector for your whole house. It goes inside your electrical panel (the gray box with all the breakers) and works like a shield for everything that uses electricity in your home.

What Is a Power Surge?

A power surge is a sudden, very big jump of electricity. Think of it like a giant wave hitting a small boat. It can come from:

• Lightning hitting near your house or the power lines
• The power company turning power off and back on
• Big machines in your own home, like your A/C, refrigerator or well pump, turning on and off every day

Most surges are small and you never see them. But every one of them hurts your electronics a little bit, until one day they stop working.

What Can a Surge Break?

Almost everything with a "brain" (a circuit board) inside:

• Your A/C, heat pump and furnace (repairs often cost $500 to $2,000+)
• Your refrigerator, washer, dryer, dishwasher and oven
• Your TV, computer, Wi-Fi, game consoles and phone chargers
• Your garage door opener, smart thermostat and LED lights

How Does It Protect My House?

When a surge comes into your home, this device catches the extra electricity before it reaches your things and sends it safely to the ground. Like a goalie stopping the ball before it reaches the net.

A plug-in power strip only protects the few things plugged into it. This protects every circuit in your house at the same time, including things you can't plug into a power strip, like your A/C, oven and dryer.

Why Should I Buy It?

• It costs less than one repair. A single A/C or refrigerator repair can cost 5 to 20 times more than this protector.
• It's required by code. Since the 2020 National Electrical Code (NEC 230.67), new homes and panel replacements need a surge protector to pass inspection. Check which code your town uses.
• It's easy to install. It snaps into your panel just like a regular 2-pole breaker. No extra box on the wall.
• You can see it working. A light on the front tells you it's protecting your home.

Will It Fit My Panel?

It fits Square D QO panels (look for "QO" on the label inside your panel door). It needs 2 empty spaces next to each other. It does not fit Square D Homeline or other brands.

Not sure? Send us a photo of the label inside your panel door and we'll tell you if it fits. Free.

Specs

• Model: Square D QO2175SB (SurgeBreaker)
• Surge rating: 25kA
• Voltage: 120/240V, single phase
• Size: 2-pole, plugs into QO load centers
• UL Listed (UL 1449)
• Brand new in the original box

Why Buy From Us

We have 24+ years of experience in the electrical industry, and we're happy to answer your questions before you buy. Same-day handling, insured shipping, 30-day returns, and a 12-month warranty handled directly by us.

Safety note: Working inside an electrical panel can be dangerous. Installation should be done by a qualified person following local codes. Always turn off the main breaker first.