Commnet Systems, Inc.

Commnet’s PowerBay+ BDFB is a modular breakerfuse bay with industry-leading monitoring, safety, and ease-of-use features. Available in 2, 4, 6, or 8 bus versions, the PowerBay+ BDFB is rated at up to 1200A per bus, up to 9600 amps total load. The bus configuration can be easily changed in the field by adding or removing bus straps, which can be safely done with the BDFB energized. Advanced monitoring features include bus voltage, total bus current, and optional individual load current. Bay status can be remotely monitored via HTTP, SNMP, and Modbus. Features

Overview The PowerBay High Density BDFB DC Distribution Bay is a small footprint DC distribution cabinet for multiple applications. Measuring at 7’ high, it has a small footprint requirement that installs in typical existing customer rack spaces. It includes removable, powder-coated steel side panels for wiring access, removable clear plastic rear panels, and front panel powder-coated steel blanking plates for unused panel positions. Features High power density and ampacity Dual, Triple, or Quad bus configurations (1200A per input bus) Front access bullet terminal circuit breakers CSI HDDC high density bullet terminal breaker-panels accept 5–100A single-pole or 150–200A dual-pole circuit breakers Cable management features lacing bars and guides that provide for neat, organized, and reliable inputoutput cable routing Supervisory controllers provide voltage, current, and breaker trip alarms, per circuit current monitoring, and ethernet GJX panels accept 100A–225A single-pole, 250A–400A dual-pole GJ1P circuit breakers Downloads

Overview The Sidecar PDF is a small footprint side-mounted PDF system for adding additional primary distribution to Commnet power plants. Bus connections allow for easy connection to existing Commnet power plants without any additional cabling. Tiered internal terminations allow for easy landing and lacing of cables inside the cabinet. The system is available in left and right mount, with GJ Breaker and TPL fuses for over current protection. It is also available in an optional standalone configuration featuring a top feed solution. Features 1800A, 2900A, and 4000A Maximum Distribution Ampacity Options available TPL Fuse Positions or Large Frame Circuit Breaker Output Circuit Protection Small 12 in x 25 in Footprint Direct Bus Connection to Power Plant or Standalone Cable Options for Input Mounts to side of Commnet PowerPlant Systems Available in Left and Right Mount Configurations Unmatched safety & reliability

Commnet’s AM Breaker Panel is an advanced vertically-oriented circuit breaker module that provides robust, high-density DC power distribution for rack mount servers and broadband applications. The AM Breaker Panel is available with an 800A or 1200A maximum rating and can be easily installed into Commnet Systems' PowerBay+ Full and Half-sized BDFBs. Features 22 bullet circuit breaker positions Per-breaker current measurement 800A and 1200A maximum rating available Alarm LED per breaker Breaker compartment light Hot pluggable Supports up to 125A per single pole circuit breaker Modular design Unmatched safety & reli

Features (6) GJ breaker positions 1200A maximum rating Alarm LED per breaker Modular design Unmatched safety & reliability

Features High ampacity DC battery disconnect device for telecom applications Top terminal mount 400 – 1, 200 ampere models Hydraulic-magnetic circuit breaker over-current protection versions Non-current limiting, switch-only versions Optional integrated NFPA code compliant thermal runaway detection system Downloads

Overview The DCX Low Profile is designed to work with C&D Battery stacks and provide battery disconnect functionality where rack to ceiling space is limited. The design provides cable access on the top, back, left or right sides of the disconnect enclosure to maximize installation flexibility when used in space constrained applications. Features High ampacity DC battery disconnect device for telecom applications Low profile enclosure design 1, 000 and 1, 200 ampere models Non-current limiting, switch-only versions Integrated NFPA code compliant thermal runaway detection system Integrated chargedischarge current measurement, local display and remote network accessible data

The DCX LP DC Battery Disconnect System provides over-current protection for battery sourced equipment and wiring. It also functions as a service disconnect in order to maintain batteries, or to shut down the battery source connection in emergency situations. The DCX LP features a low profile enclosure design for locations with limited height allowance. It also provides multiple cable routing options to maximize installation flexibility in space constrained applications. Our Thermal Runaway Detection (TRD) system is included. All necessary installation hardware is shipped with the DCX LP and installation does not require additional drilling or hardware. Installation and operation are simple. Features High ampacity DC battery disconnect device for telecom applications Low profile enclosure design Breaker trip rating of 1200A Top rack mounting configuration with multiple cable routing options Hinged flip-up front access panel Clear removable inspection window covers for lug mounting access Downloads

Features High ampacity DC battery disconnect device for telecom applications 400 - 1, 200 ampere models Magnetic circuit breaker over-current protection versions Optional current shunt Non-current limiting, switch-only versions Optional integrated NFPA code compliant thermal runaway detection system Wall mount and rack mount configurations available Reversible left-swing or right-swing door Flexible cable entry

CSI introduces an innovative "drop-in" solution for providing NFPA fire code-compliant venting and hydrogen detection for Valve Regulated Lead Acid (VRLA) battery rooms in communications facilities. The H2 Zero system provides hydrogen sensing, temperature sensing, and -48VDC powered fan air movement for battery rooms. The CSI H2 Zero is an integrated, complete solution for high reliability battery room venting, hydrogen outgassing detection, and remote alarm. Features Integrated VRLA battery room ventilation system is fire code-compliant Remote sensor modules for hydrogen and temperature measurement Included adapter allows interfacing with standard 6-8" round HVAC ducting Internal fan tray allows reversal for either intake or exhaust operational selection 1, 500 CFM N+1 redundant, and 2, 000 CFM non-redundant air flow -48VDC input (dual redundant AB DC inputs with integrated input fuses) Status and alarms displayed via wall-mounted supervisory control panel with LCD Form C dry alarm contacts Major and minor alarm contacts for remote alarm indication of hydrogen detection andor system fault Integrated motor operated output damper (opens when fans operate) Fire suppression interlock input (closes damper if fire suppression system active) Downloads