Description
Siemens QSPD2A035B 35 KAmp BoltShield Indoor Surge Protective Device
Whole-Home Surge Protection. Built Right Into Your Electrical Panel.
Most surge protectors guard one desk or one room. This Siemens BoltShield protects your entire home — from the very source of your electricity, before a surge ever reaches a single device, appliance, or outlet.
35,000 Amps of Surge Protection Per Phase
Lightning strikes. Grid switching. Utility fluctuations. These are the kinds of massive, sudden power events that can silently damage or instantly destroy your home’s appliances, electronics, HVAC systems, and wiring in a fraction of a second.
The Siemens BoltShield absorbs up to 35,000 amps of surge current per phase — intercepting dangerous spikes at the panel level and neutralising them before they travel through your home’s wiring. It is the most complete level of surge protection your home can have.
Designed to Work Perfectly with Siemens Load Centers
No complicated installation. No electrician scratching their head. This unit is engineered specifically to fit directly into existing Siemens load centers — plugging straight into the load center bus for a fast, clean, and secure installation with no guesswork and no modifications required.
A straightforward job for any qualified electrician.
Always Know Your Protection Status at a Glance
The built-in mechanical visual indicators take the uncertainty completely out of the equation:
- Green — your home is fully protected and the device is working as it should
- Red — protection has been compromised and attention is needed
Unlike LED indicators that can fail or mislead, these are mechanical status indicators — reliable, accurate, and designed to give you a clear and honest read of your protection status at any time without needing power to display it.
Why Whole-Home Surge Protection Matters
Individual surge protectors at your outlets are a good second line of defence — but they were never designed to handle the kind of large-scale surges that come in through your main electrical supply. The Siemens BoltShield works as your first line of defence, catching the big surges at the panel so your individual protectors never have to work that hard.
Together they create a complete, layered protection system for everything in your home.
Perfect For
Whole-home surge protection • New builds and renovations • Homes with solar or generator systems • Properties in storm or lightning-prone areas • Homeowners with high-value appliances and electronics • Anyone upgrading an existing Siemens load center
Protect your entire home. Not just one room.
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