The Power Supply Filter Assembly from Siemens Industry, Inc., shown in Figure 1 filters the power from the incoming AC mains and distributes it to the PSC-12M power supply and the optional PSX-12M power supply extender. It also provides fuse protection to the mentioned power supplies. The Operating Temperature Range and Humidity is 0-49 C, and 93% @ 32 C. Install in accordance with National Electrical Code ANSI/NFPA 70, the Standard for Installation and Classification of Burglar and Holdup Alarm Systems, UL 681, and the Standard for Central Station Alarm Services, UL 827.

PFSA Power Supply Filter Assembly

The terminal blocks of the PSFA are defined as follows:
TB1 AC: Main Input

WARNING

The main AC power line must be turned OFF prior to installation

The connectors of the PSFA are defined as follows:
P1: To PSC-12M, PSX-12M, PSC-12 or PSX-12
P2: To PSC-12M, PSX-12M, PSC-12 or PSX-12
P3: Laptop power connection (AC adapter, P/N 500-633992 required)

CAUTION

Always apply AC power first followed by the battery.