Datasheet

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• DC input voltages
– RPS input: +12V @ 13A (Catalyst 3550-12G, 3550-12T, and 3550-48); +12V
@ 8.3A (Catalyst 3550-24 and 3550-24-FX)
– DC input for 3550-24-DC: –36 to –72VDC @ 2A
Acoustic noise • ISO 7770, bystander position—operating to an ambient temperature of 30
degrees Celsius:
– Catalyst 3550-12G and 3550-12T: 58 dBa
– Catalyst 3550-24 and 3550-24-DC: 48 dBa
– Catalyst 3550-48 and 3550-24-FX: 46 dBa
Mean time between failure (MTBF) • 110,332 hours (Cisco Catalyst 3550-12G)
• 113,658 hours (Cisco Catalyst 3550-12T)
• 193,000 hours (Cisco Catalyst 3550-24)
• 163,000 hours (Cisco Catalyst 3550-48)
• 183, 000 hours (Cisco Catalyst 3550-24-DC)
• 186,000 hours (Cisco Catalyst 3550-24-FX)
Regulatory Agency Approvals
Safety certifications • UL to UL 1950, Third Edition
• c-UL to CAN/CSA 22.2 No. 950-95, Third Edition
• TUV/GS to EN 60950 with Amendment A1-A4 and A11
• CB to IEC 60950 with all country deviations
• NOM to NOM-019-SCFI
• CE Marking
Electromagnetic emissions
certifications
• FCC Part 15 Class A
• EN 55022 Class A (CISPR 22 Class A)
• VCCI Class A
• AS/NZS 3548 Class A
• BSMI
• CE Marking
Network Equipment Building
Systems (NEBS) (for 3550-24-DC)
• Bellcore
• GR-1089-CORE
• GR-63-CORE
• SR-3580 Level 3
Warranty • Limited lifetime warranty
Feature Description