The Square D by Schneider Electric QO 100 Amp Outdoor Circuit Breaker Enclosure includes a two-pole QO2100 circuit breaker for use as an exterior disconnect. This breaker box is suitable for use as service entrance equipment for compliance up to 2017 NEC code and is rated Type-3R for outdoor use. This enclosure accepts a B-Hub for top feed applications (sold separately). For non-service entrance equipment applications, ground bar PKOGTA-2 may be required and is sold separately. This breaker box is compatible with Square D QO 2-pole circuit breakers.