DC Distribution

Space Critical Power Solutions

DC Distribution

48V DC 24V DC or 12V DC

19/23" RACKMOUNT CIRCUIT BREAKER DISTRIBUTION PANELS

SINGLE 450Amp BUS - MAX. 10 x PLUG-IN CIRCUIT BREAKERS

SINGLE 900Amp BUS - MAX. 20 x PLUG-IN CIRCUIT BREAKERS

DUAL ISOLATED A & B 450Amp BUSES - MAX. 10 x PLUG-IN CIRCUIT BREAKERS PER BUS

Newmar’s high density Rackmount Circuit Breaker Distribution Panel designed to accommodate virtually any 48 VDC, 24 VDC or 12 VDC power distributions for all Telecom power requirements.

The DST is a high density Rackmount Distribution Panel designed to accommodate virtually any 48 VDC, 24 VDC or 12 VDC power distribution requirement. Its flexibility makes it ideal for all telecom site power requirements, large and small.

These distribution panels accommodate up to 10 or 20 circuit breakers (depending on model) within a compact rack-mount housing, occupying only 2 RU of rack space. The circuit breakers feature a unique plug-in design which requires only front access for quick, easy installation during initial power system configuration, as well as future system expansion.

Features

Model DST-20A (UL) features dual isolated 10 circuit A and B buses, each rated at 450 amps, enabling redundant power configuration or different voltages/ground references. A and B inputs can also be paralleled, creating a single900 amp bus. Model DST-10 (UL) has a single 450 amp bus which accepts up to 10 breakers.

The plug-in circuit breakers insert securely into sockets recessed in the front access panel. Breaker alarm contacts allow optional remote tripped-breaker alarm/indication. A “mid-trip” function of the circuit breaker provides quick visual identification of a failed circuit and distinguishes between an over-current trip and intentional shut-off. When tripped, the toggle handle moves to a 90° position, halfway between the “on” and manual “off” position.

Specify the required amperages when ordering and plug them into the panel during installation.

Input/output wiring is rear access via bus bars that accept single or double hole lugs. Input/output buses are secured to the load breaker sockets via solid nickel-plated copper bus material.

Mounting brackets are provided to adapt the panel for 19”or 23” racks. Snap-in hole plugs are provided for unoccupied breaker positions and a clear protective cover which prevents accidental shut off of the breakers and also provides for convenient placement of circuit identiﬁcation labels.

Note: The DST is shipped standard without circuit breakers.

Specifications

Electrical
Nominal Input/Output: 48VDC, 24VDC or 12 VDC
Total Circuit Capacity:
DST-20A: 20 Breakers
DST-10: 10 Breakers
Total Current Capacity:
DST-20A: 900 amps (dual 450 amp buses)
DST-10: 450 amps (one 450 amp bus)
Maximum Circuits per Bus: 10

Compliances
UL Listed: 1801 First Edition: Subject Standard for Power Distribution Centre for Telecommunications Equipment

C22.2 No. 225-M90: Canadian Standards for Telecommunication Equipment
CE Marked

Circuit Breakers
UL Recognized; CE Marked
Current Ratings: 5, 10, 15, 20, 30, 40, 50, 75 or 100 amps (Breaker rating stamped beside toggle for easy reference)
Voltage Rating: 80 VDC max.
Type: Plug-in with Auxiliary Contacts
Weight: 1 Lb

Operating Temperature
-30°C to + 35°C: 450 amps/Bus; de-rate to 400 Amps/Bus @ +40°C, 320 Amps/Bus @ +50°C

Mechanical
Bus Bars: Nickel-plated copper; accepts single or double hole lugs
Front Panel: Anodized aluminum Cover, Rear Panel: Vinyl-laminated aluminum
Dimensions: (Both models)

Inches			Centimeters
H	W	D	H	W	D
3.5	19/23	11	8.9	48.3/58.4	27.9

Weight (no breakers installed): DST-20A: 12 lbs., DST-10: 9 lbs.

Options
Return Bus Bar Assembly - Rear Rack Mount: 800 amps; Model BBA-800
Rear Terminal Cover Assemblies: Model: RC-DST Covers rear, top, sides of bus bars. (DST must be flush mounted to rack face for
installation of cover) Model: RRC Covers rear, top, sides of multiple components in relay rack. Specify 19" or 23", 3 RU or
7 RU height. (DST maybe either centre or flush mount to use cover)

Alarm/Indicator
Tripped Breaker Contacts via Rear Panel Connector; Normally Open configuration
Note: Separate contacts for each bus on model DST-20A

Download Data Sheet

Download Manual

For pricing and availability please email : sales@gfspower.com.au

Should you have a requirement that cannot be met from the current Web site please email us @ sales@gfspower.com.au

Reseller inquiries are welcome, please email: raymond@gfspower.com.au

Last modified: 19-Nov-2012

Webmaster: GFS Power