User's Manual

Site Preparation
Power Consumption, Connections and Power Supplies
MA 2000 Installation and Configuration Guide 37
• The following system elements require external fuse protection: RIUs, BUs, and
410/430 Controllers.
• Referring to
Table 3-1, calculate the required fuse protection.
• Example: a set of three elements consisting of a BU, RIU and MA 410/430 controller
requires a 2A circuit breaker.