DPB1U Series

KEY FEATURES

• One Rack Space High (1.75")
• 19- or 23-Inch Rack Mounting
• Magnetic Circuit Breakers
• Single Bus with 1 to 6 Breakers
• Dual Bus (A/B) with 2 to 12 Breakers
• Voltage: 12, 24, or 48 VDC
• Positive or Negative Ground
• 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

DESCRIPTION

Unipower Telecom's DPB1U Series of circuit breaker panels provide distribution and overload protection for 2 to 12 DC circuits. The panels are only one mounting position (1.75 inches) high. The panel provides 1 to 6 single-bus breakers or 2 to 12 dual-bus (A&B) breakers (1 to 6 per bus). The panels distribute up to a total of 300 amperes of load current from a single or two separate 150-ampere sources with true A and B distribution and alarm capabilities. A and B sections of the dual-bus panel are isolated and can be separately configured for 12, 24, or 48 volts, positive or negative ground. Breaker capacities are from 1 to 50 amperes.

Breaker alarm is indicated by a dual-color LED (green/red) for each bus and two Form C relay contacts per bus.

A fail safe option lets the A and B sides operate redundantly from two separate feeds.

The 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.

INPUT / OUTPUT

• Panel Capacity: 150A Per Bus, 300A Total
• Configuration
  • Single Bus with 1 to 6 Breakers
  • Dual Bus with 1 to 6 Breakers Each
• Breaker Capacity¹: 1A to 50A
• Voltage²
  • 48V Version: 42-60 VDC
  • 24V Version : 21-30 VDC
  • 12V Version: 10.5-15 VDC
• Polarity²: Positive or Negative Ground

ALARMS

• Alarm Indicator: Dual-Color LED Per Bus
• LED Status Indication
  • Green = Normal
  • Red = Alarm
  • Off = No Power
• Alarm Connections: Two Form C Relay Contacts Per Bus

SAFETY STANDARDS: UL1950, CSA22.2 #950, EN60-950

ENVIRONMENTAL

• Operating Temp. Range: -10°C to +70°C
• Storage Temp. Range: -40°C to +85°C
• Humidity: 0% to 95%, Non-Condensing

PHYSICAL

• Case Material: Steel
• Finish: Powder Coat Gray
• Dimensions³: 1.75"H x 19.00"W x 9.00"D (44.5mm x 483mm x 229mm)
• Weight: 10.30 lbs (4.67 kg)
• Rack Mounting Width: 19 or 23 inches

CONNECTIONS

• Input Connections: Crimp Type Lug or ¼-20 Studs
• Output Connections
  • 1-30A: Barrier Terminal Strips, #6-32
  • 40-50A: Barrier Terminal Strips, #10-32
• Chassis Ground Connection: #8-32 Stud
• Fail Alarm Connections: 0.045" sq. Wirewrap Pins

NOTES:

1. See table for breaker capacities.
2. See Ordering Guide to specify voltage and polarity.
3. For unit with fail safe option the case depth is 10.44 inches (265mm).