DescriptionCisco ASR 903 Router SpecificationsPhysical specificationsHeight: 5.22 in. (132.6 mm) – 3RUWidth: 17.44 in. (443 mm)Depth: 9.22 in. (234.2 mm)Weight:● 34.17 lb (15.5 kg) with two RSPs, two DC power supplies, and loaded with a typical combination of interface module cards● 11.2 lb (5.1 kg) for an empty chassis● 38 lb shipment weightRack mountsETSI rack mount kit19 in. rack mount kit23 in. rack mount kitPower supplies2 power supply slotsInterface modules6 interface module slotsRoute switch processors2 RSP slotsFan tray1 fan tray with fan redundancy4 dry contact input alarms on the fan trayAir flowSide-to-side airflow; inlet on the right side, outlet on the left side when looking from the frontPower suppliesUp to 2 power supplies (AC or DC)Modules operate in load-share modeSystem can operate on a single power supply and supports mixing of one AC and one DC power supplies in a single chassis.Chassis MTBF at 40ºC operating temperature900,000 hoursFan Tray MTBF at 40ºC operating temperature600,000 hoursPower consumptionMaximum input power 1350W (including loss). This is equivalent to 4600 BTU per hr.AC input voltage and frequencyVoltage range: 85 to 264 VAC, nominal 115 to 230 VACFrequency Range: 47 to 63 Hz, nominal 50 to 60 HzAC Power Supply MTBF at 40ºC operating temperature300,000 hoursDC input voltageFor 550W DC power supply, voltage range: 19.2V to 72V DC, nominal 24V DC, -48V/–60V DC.For 1200W DC power supply, voltage range: –40.8V to –72V DC, nominal –48V/–60V DCDC Power Supply MTBF at 40ºC operating temperature300,000 hoursPower Supply shipment packaging size (L x W x H)15.44 in. x 9.44 in. x 4.31 in.Power Supply shipment weight3.6 lbs.Operating environment and altitude–40 to 65ºC operating temperature (DC operation, with both the 550W and the 1200W power supplies)–40 to 65ºC operating temperature (AC operation, with the 1200W power supply)–5 to 55ºC operating temperature (AC operation, with 550W AC power supply)0 to 40ºC operating temperature (AC operation, with 550W AC power supply)–60 to 1800m operating altitude (for full operating temperature range)Up to 4000m operating altitude (at up to 40ºC temperature)
