SDV-R™ NON-ARC-RESISTANT AND SDV-R-AR™ ARC-RESISTANT Medium-voltage distribution The new types SDV-R™ non-arc-resistant and SDV-R-AR™ arc-resistant medium-voltage circuit breakers are an extension of the reliable SDV outdoor distribution circuit breaker family. They have an integral mechanically- interlocked, fast-acting grounding switch that can reduce total project cost, physical footprint, and environmental impact. Operator safety can be improved with the arc-resistant option tested to IEEE C37.20.7, accessibility type 2B. • Optimal solution for renewable energy applications • Fast switching time to ground, which limits transient voltage excursion to low levels, eliminates the need for grounding transformers saving installation and maintenance costs and physical space, and removes the risk of transformer oil spills • Pair with Sieemns protective relays to match any application • Time-proven stored-energy operator design tested to IEEE C37.09-2018 • Highly reliable vacuum interrupters with MTTF over 55,000 years Moderate and high seismic qualification (Zones 1-4) available Porcelain dry-type bushings with extended creep UL Listing will be available Installation and commissioning, maintenance agreements, aftermarket parts, and 24/7 emergency services.

Medium-voltage distribution circuit breakers Technical ratings Characteristics Unit Short-circuit and short-time current kA, rms Power-frequency withstand voltage kV Uc TRV peak value transient recovery voltage kV t3 time to voltage Uc transient recovery voltage ps Permissible tripping delay time Y sec Closing and latching current kA peak Mechanical switching time (vacuum circuit breaker open to ground switch close) Grounding switch short-time current kA Grounding switch closing and latching current kA Voltage class Additional ratings forSDV-R-AR: • Accessibility type 2B • Internal arcing short-circuit...