power distribution - Siemens

PanelboardsCircuit Breaker / Column TypeType C1240 Volts AC Maximum250 Ampere Mains250 Ampere Maximum BranchUL Short Circuit Rating —200,000 IR MaximumBranch Breaker SymmetricalInterrupting RatingBased on Underwriters’ Test ProcedureType C2480Y/277 Volts AC Maximum250 Ampere Mains250 Ampere Maximum BranchUL Short Circuit Rating —100,000 IR MaximumMeets 2002 NEC wire bendingrequirement, section 312–6.PanelboardsListed by Underwriter’s Laboratories,Inc., under “Panelboards” File #E2269.Meets Federal SpecificationW–C375B/Gen.Service240 Volts Maximum. 1-Phase, 3-Wire, or3-Phase, 4-Wire.Panelboards Fronts and DoorsStandard panelboards are furnished withtrim with a flush door lock. All are factoryassembled for ease of installation. Frontsare fabricated from code gauge steel andfinished ANSI-61.Main Breakers C1BL, BLH and HBL frame breakers aremounted horizontally. All other framesare mounted vertically.Main Breakers C2BQD frame breakers are mountedhorizontally. All other frames aremounted vertically.BoxesC1 — 7 5 ⁄8" wide, 5 3 ⁄4" deep.C2 — 8 1 ⁄2" wide, 5 3 ⁄4" deep.Branch Breaker Side GuttersCircuitSide GutterType Breaker (inches)C1 BL, BLH, HBL, BQD 3.505C2 BQD 3.5Weight–ApproximateTotal panelboard weight when filled witha normal quantity of breakers andaccessories is:*About 3 lbs. per inch of box height.Gauge Steel BoxesType Width Height Gauge SteelC1 7 5 ⁄8" 48", 73", 85" #14C2 8 1 ⁄2" 48", 73", 85" #14FrontsC1 7 5 ⁄8" 48", 73", 85" #14C2 8 1 ⁄2" 48", 73", 85" #14Main Breaker ConnectorsAmpereRating Connectors suitable for Cu or Al100 (1) #14–1/0 AWG125 (1) #4–1/0 AWG225 (1) #6 AWG–300 kcmil250 (1) #4 AWG–350 kcmil Al(1) #6 AWG–350 kcmil CuMain Lug Connectors125 (1) #6 AWG–350 kcmil250 (1) #6 AWG–350 kcmilGeneralSeries Connected Short Circuit RatingsThe term “Series Connected ShortCircuit Rating” refers to the applicationof series connected circuit breakers in acombination that allows some circuitbreakers to have lower individualinterrupting ratings than the availablefault current. This is permitted as long asthe series combination has been testedand certified by UL.The table below lists specific main andbranch breaker series combinations thatare marked on all C1 panels. Allcombinations shown have been testedfor use in C1 panelboards and are ULListed. Other combinations are available.See series rating information in theCircuit Breaker Section, pages 6-146 to6-150. Ratings other than those shownbelow must be specified at the time oforder entry.PANELBOARDS10For inches / millimeters conversion, see Application Data section. Connector ranges indicated do not apply to all mainbreaker types. Refer to molded case circuit breakerstandard pressure wire connectors in the breakersection of this catalog for the wire ranges for a specificbreaker frame.10-66Siemens Power Distribution & Control, SPEEDFAX 2007-2008 Product Catalog