Power, BTU, & MTBF Information for the B5/C5-Series

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Article ID: 13219 

Products
B5-Series
C5-Series 

Solution

B5-Series 
 Product    Description           Max Amps    Volt-Amps  Power   Watts   BTU/hr   MTBF hrs
@110V @220V @110V Factor @110V @110V

B5G124-24 24 Port Gig 0.454 0.272 50.00 .99 49.50 169 394,679
B5G124-24P2 24 Port Gig PoE 4.470 2.090 496.70 .99 491.70 1678 345,093
B5G124-48 48 Port Gig 0.690 0.390 76.70 .99 75.90 259 308,359
B5G124-48P2 48 Port Gig PoE 4.780 2.370 531.10 .99 525.80 1795 260,806
B5K125-24 24 Port Gig + 10G 0.540 0.300 60.00 .99 59.40 203 374,029
B5K125-24P2 24 Gig + 10G PoE 4.530 2.290 503.30 .99 498.30 1701 328,905
B5K125-48 48 Port Gig + 10G 0.860 0.460 94.60 1.00 94.60 323 297,808
B5K125-48P2 48 Gig + 10G PoE 4.876 2.509 541.10 .99 535.70 1828 252,940

C5-Series 
 Product    Description           Max Amps    Volt-Amps  Power   Watts   BTU/hr   MTBF hrs
@110V @220V @110V Factor @110V @110V

C5G124-24 24 Port Gig 0.598 0.377 64.90 1.00 64.90 222 395,557
C5G124-24P2 24 Port Gig PoE 8.910 4.350 980.10 1.00 980.10 3345 289,425
C5G124-48 48 Port Gig 0.922 0.493 101.20 1.00 101.20 345 311,897
C5G124-48P2 48 Port Gig PoE 9.010 4.390 991.10 1.00 991.10 3383 229,532
C5K125-24 24 Port Gig + 10G 0.680 0.381 75.60 .99 74.80 255 365,615
C5K125-24P2 24 Gig + 10G PoE 8.942 4.420 983.40 1.00 983.40 3356 273,083
C5K125-48 48 Port Gig + 10G 1.087 0.569 118.80 1.00 118.80 405 284,345
C5K125-48P2 48 Gig + 10G PoE 9.490 4.610 1043.90 1.00 1043.90 3563 213,965
C5K175-24 24 Port SFP + 10G 0.629 0.385 68.20 1.00 68.20 233 395,839

What is stated above for all products are maximum usage numbers - under full Switch and PoE load at the stated power source voltages - that should be used when sizing HVAC, Power, and UPS for switch infrastructure. In the event that information sources disagree, for the stated purpose this document should be given preference over an Installation Guide, which should be given preference over the MTBF Page, which should be given preference over a Datasheet (B5/C5). 

Power over Ethernet models 
           Number of Ports Providing PoE Power Simultaneously

Product Without an RPS With an RPS
802.3af 802.3at 802.3af 802.3at

B5G124-24P2 24 ports (15.4W) 12 ports (30W) same
B5K125-24P2 24 ports (15.4W) 12 ports (30W) same
B5G124-48P2 24 ports (15.4W) 12 ports (30W) same
-or- 48 ports (7.5W) 12 ports (30W) same
B5G125-48P2 24 ports (15.4W) 12 ports (30W) same
-or- 48 ports (7.5W) 12 ports (30W) same
C5G124-24P2 24 ports (15.4W) 24 ports (30W) same
C5K125-24P2 24 ports (15.4W) 24 ports (30W) same
C5G124-48P2 48 ports (15.4W) 24 ports (30W) 48 ports (15.4W) 48 ports (30W)
C5K125-48P2 48 ports (15.4W) 24 ports (30W) 48 ports (15.4W) 48 ports (30W)

Redundant Power Supplies 
 Product        Description     Min Amps    Volt-Amps  Power   Watts   BTU/hr
@110V @220V Factor

STK-RPS-150PS non-PoE RPS .030 .015 3.30 1.00 3.30 11.27
STK-RPS-500PS B5 PoE RPS .161 .081 17.70 1.00 17.70 60.40
STK-RPS-1005PS C5 PoE RPS .077 .039 8.40 1.00 8.40 28.67

These specifications assume the RPS is in standby mode. When providing external power in replacement of a switch internal power supply, the RPS power specs should be computed the same as those of the internal power supply it is replacing, as outlined in the above switch tables. 

See also:
  • Discussion of Watts, Volt-Amps, Power Consumption, and BTUs: 2404
  • RPS System for the B5 and C5 Series: 13569
  • Power, BTU, & MTBF Information for the earlier generations of SecureStack: 5418
  • RPS System for the earlier generations of SecureStack: 5741
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