2u dc breaker panel

Product Information

DPB2U-AB Series 2u dc breaker panels provide distribution and overload protection for up to 18 DC circuits.  They distribute up to 300 amperes of load current for each A or B bus, with each bus having up to 9 circuit breakers.

Each bus on these 2U dc breaker panels can be independently configured for 12, 24 or 48 volts positive or negative grounds.

Magnetic circuit breaker capacities are from 1 to 100 amperes.  The breakers can be removed and replaced from the front of the unit by disconnecting on the back and removing the front panel cover.  Optional breaker alarms have dual-color LEDs (green/red) and Form C relay contacts.The input bus terminations are to copper bus bars.

The 2U dc breaker panels can be ordered for mounting in either a 19- or 23-inch relay rack.  They are flush mounted to the rack.


Features and Options
  • Two Rack Units High: 3.50”
  • Field Changeable Breakers
  • Field Replaceable Alarm Board
  • 19- or 23-Inch Rack Mounting
  • Magnetic Circuit Breakers
  • Dual, Independent A/B Buses
  • Optional A/B Return Bus Bars
  • Fully Independent A/B Alarms
  • 1 to 9 Breakers per Bus
  • 1A to 100A per Breaker
  • 300A per Bus, 600A Total
  • Voltage: 12, 24 or 48VDC
  • Positive or Negative Ground
  • LED and Form C Relay Alarm Option
  • -200 to +700C Operating Temperature
Panel Capacity300A Per Bus, 600A Total
ConfigurationDual A/B Bus, 1 to 9 Breakers Each
Breaker Capacity1A to 100A
Voltage48V Nominal: 42-60VDC
24V Nominal: 21-30VDC
12V Nominal: 10.5-15VDC
PolarityPositive or Negative Ground
Alarm IndicatorDual-Color LED Per Bus
LED Status IndicationGreen = Normal
Red = Alarm
Off = No Power
Alarm ConnectionsOne Form C Relay Contact Per Bus
CertificationsUL69950-1 2nd Ed.,CAS22.2 No.950-1 2nd Ed., EN60950-1 2nd Ed.
Operating Temp. Range-20°C to +70°C
Storage Temp. Range-40°C to + 85°C
Humidity0% to 95%, Non-Condensing
Case MaterialSteel
Dimensions, Inches (mm)19" - 3.50 (88.9) H x 19.00 (483) W x 10.19 (259)
23" - 3.50 (88.9) H x 23.00 (584) W x 10.19 (259)
Weight9.55 lbs. (4.33kg.)
Rack Mounting Width19 or 23 Inches
Base Model NumberMountingInput FeedsMax. No. BreakersAmps Each FeedTotal Amps
DPB2U-AB-1919"29 each bus300600
DPB2U-AB-2323"29 each bus300600

NOTE: See ordering guide for complete model configuration.