Revision A | MX28B-PDF Product Manual |
2.2.1 Input –48 VDC Bus
All six busses can be isolated, or tied together with splice plates depending on customer desires.
Splice Plates
Installed
Without Splice
Plates
Figure 2-2 Bus Bars
2.2.2 Circuit Breaker Tiers
Each circuit breaker tier provides positions for mounting 24 plug-in circuit breakers. Each tier bus is connected to the –48 VDC input bus with each side having an ampacity of 600 amperes.
2.2.3 Circuit Breakers
The PDF utilizes plug-in magnetic circuit breakers to supply loads from the –48 VDC bus. Each circuit breaker has auxiliary contacts that close if the breaker trips, thus enabling monitoring of fault conditions. Circuit breakers are available with ratings from 1 – 100 amperes (see Table 2-1)
Plug-in circuit breakers rated at 60A or more require two mounting positions. They are available in kit form (see kit selection information in Table 2-2). These kits include the breaker and all necessary mounting hardware.
