55.50S12.2E6 Insignia Main Board Power Supply, TP.MS3393T.PC792, 550 Siemens SB3 Low Voltage Switch Board 3P4W 2000 Amp 480Y 277 Volt 515Y35539M02 Insignia Main Board Power Supply, TP.MS.3553.PC906, NS Siemens SJ1 400 600 Amp 65kA Main Breaker Kit w Breaker. PAD 5 MB SIEMENS Main Board for Power Supply with 1 Adapter Plate The main board (Model PAD 5 MB) used with PAD 5 notification extender units provides remote, auxiliary power for signaling appliances. Model PAD 5 MB also allows for expansion of notification appliances (NACs) that plug into each main board. Each PAD 5 MB main board connects via the P2 loop of a Siemens `X series Device Loop Card (Model XDLC) connected to the Siemens Modular fire alarm control panel (FACP). Up to 32 Siemens PAD 5 main boards or mixture expansion cards can connect to one (1) Model XDLC at a time. Additionally, Model PAD 5 MB has one (1) address, and is programmed with the Siemens Device Programmer Test Unit, Model DPU. Specifications Weight 2 lbs Manufacturer Siemens Industry, Inc. Brand Siemens Condition New Unit of Measurement EA (Each) Production Status Active Features Intelligent controller resides on SLC loop Four (4) Class A or eight (8) Class B NACs that can be mixed Class X wiring isolator device Temperature compensated battery charging circuits Trouble relays for remote monitoring Diagnostic light emitting diodes (LEDs) Alternating Current (AC) power connection Open Datasheet