1u dc breaker panel

Product Information

DPB1U Series 1U DC breaker panel  provide distribution and overload protection for 1 to 12 circuits.  The panels are only one mounting position (1.75 inches) high.

The panel provides 1 to 12 single-bus breakers or 2 to 12 dual-bus (A&B) breakers (1 to 6 per bus) and distributes up to a total of 300 amperes of load current from two separate 150-ampere sources with true A and B distribution and alarm capabilities.

A and B sections of the dual-bus 1u dc breaker panel are isolated and can be separately configured for 12, 24 or 48 volts and are polarity neutral.

Breaker capacities are from 1 to 50 amperes.  Alarms are indicated by a dual-color LED (green/red) and one Form C relay contact per bus.

The 1u dc breaker panels come with brackets that permit mounting in either a 19- or 23-inch relay rack.  They can be mounted from the front of the rack with offsets every quarter-inch front to back to align with existing rack-mounted equipment.

Features and Options
  • One Mounting Position High: 1.75"
  • 19- or 23-Inch Rack Mounting
  • Magnetic Circuit Breakers
  • Single Bus with 1 to 12 Breakers
  • Dual Bus (A/B) with 1 to 6 Breakers each side
  • Voltage: 12, 24 or 48VDC
  • A & B are Isolated Loads
  • A & B Can Be Separately Configured
  • 1A to 50A per Breaker
  • Bus Capacity: 150A per Bus
  • Green/Red LED Breaker Alarm
  • Two Form C Relay Contacts per Bus (A/B)
  • Rack Offset Every ¼" from Front to Back
  • Fail Safe Option
  • Circuit Breaker Panels
Panel Capacity see model table opposite
Configuration Single Bus: 1 to 12 Breakers
Dual Bus: 1 to 6 Breakers Each
Breaker Capacity 1A to 50A
Voltage 48V Nominal: 42-60VDC
24V Nominal: 21-30VDC
12V Nominal: 10.5-15VDC
Alarm Indicator Dual-Color LED Per Bus
LED Status Indication Green = Normal
Red = Alarm
Off = No Power
Alarm Connections One Form C Relay Contact Per Bus
Certifications UL69950-1 2nd Ed.,CAS22.2 No.950-1 2nd Ed., EN60950-1 2nd Ed.
Operating Temp. Range -10°C to +70°C
Storage Temp. Range -40°C to + 85°C
Humidity 0% to 95%, Non-Condensing
Case Material Steel
Finish Powder Coat Black
Dimensions, Inches (mm) 1.75 (44.5) H x 19.00 (483) W x 9.00 (229) D [10.44 (265mm) D with option F]
Weight 10.30 lbs. ( 4.67 kg.)
Rack Mounting Width 19 or 23 Inches using reversible mounting brackets
Model Number Input Feeds Max. No. Breakers Amps Each Bus Total Amps
DPB1U-Axy-C 1 6 150 150
DPB1U-Axy-Bxy-C-S 1 12 150 150
DPB1U-Axy-Bxy-C 2 6 EACH BUS 150 300

Note: ‘x’ denotes the operating voltage where 1=48V, 4=24V and 6=12V.
‘y’ denotes between one and six breakers which must be specified as part of the final model number.
See ordering guide on datasheet to specify a full model number.