Square D Load Center SPDs
Square D™ QO, NQ, and Homeline Load Center SPDs are easy to install plug-in units that install as quickly as a standard
circuit breaker. The surge suppressors use two pole spaces in a QO
or Homeline load center, or NQ panelboard. Additional information
can be found on the QO2175SB and HOM2175SB product ranges.
QO, NQ, and Homeline Load Center SPDs
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QO2175SB |
HOM2175SB |
US and Canadian UL Listed as Type 1 SPD to the UL 1449 standard. Complies with requirements of NEC Article 285 (2017), CSA C233.1-87, and CSA C22.2 No. 8-M1986 as appropriate. Meets NEC2023 Section 215, 225 and 230 requirements.
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QO2175SB for QO load centers, combination devices, and NQ panelboards
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HOM2175SB for Homeline load centers and combination devices
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Requires two pole spaces
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LED indicates operational status
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Whole House Protection: 25 kA surge current capacity per phase
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UL Nominal Discharge Current rating of 10 kA