APC MX28B-2400 User Manual

Revision B 

MX28B-1200   PRODUCT MANUAL 

MX28B-1200/2400 

11 

distribution section with the front cover removed. 

Alternate circuit breaker configurations are available in order for the power frames to provide 
support for larger individual load connections.   Six circuit breakers in the 100 amp to 400 amp 
range or four circuit breakers in the 225 to 700 amp range in a panel-mount arrangement can be 
specified instead of the distribution module with 48 plug-in breakers. 

Optional power distribution box frames can be added to a power system to support additional 
circuit breakers or telecom fuses.  Auxiliary alarm contacts from circuit breakers can be brought 
back to the control unit through the use of an alarm extension printed circuit board in each bay.  
Ten fuses outputs can also be directly monitored by the control unit. 

•= Ambient Temperature: 

-20°C to +65°C operating 
-40°C to +85°C storage 

•= Humidity: 

0% to 85% RH non-condensing operating 
0% to 95% RH non-condensing storage 

•= Altitude: 

Up to 3000m, operating 
Up to 10,000m, storage 

•= Weight: 

Base Power Frame – 400 to 600 lbs. (181 to 272 kg) 
Extension Power Frame – 400 to 600 lbs. (181 to 272 kg) 
Rectifier - 11 lbs. (5 kg.) 

•= Dimensions 

Box Frame:  84” high x 26” wide x 26” deep  
(2134 mm x 660 mm x 660 mm) 

•= Color: 

 

  Dawn 

Gray 

(fronts) 

 

 

•= Safety 

UL 1950