Power distributor DDB-2B125 series

IP20DIN rail

Presentation
Bipolar distribution block 125 A with side entry, available in 7-connection and 15-connection variants. Designed to distribute a main feed to multiple outgoing circuits in compact electrical panels, featuring a high-conductivity copper conductor bar, insulating housing and DIN-rail or surface mounting.

Detailed characteristics

• Electrical:
  • Rated current: 125 A
  • Rated voltage: 690 V
  • Number of poles: 2
  • Number of connections per variant and hole diameters:
    • DDB-207B125 (7 connections): 1 x Ø9.5 mm / 5 x Ø5.5 mm / 1 x Ø7.5 mm
    • DDB-215B125 (15 connections): 1 x Ø9.5 mm / 11 x Ø5.5 mm / 3 x Ø7.5 mm
  • Acceptable conductor sections:
    • For Ø9.5 mm: flexible with ferrules 10–35 mm² / solid 10–35 mm²
    • For Ø5.5 mm (DDB-207B125): flexible with ferrules 2.5–6 mm² / solid 1.5–6 mm²
    • For Ø5.5 mm (DDB-215B125): flexible with ferrules 1.5–6 mm² / solid 2.5–6 mm²
    • For Ø7.5 mm (DDB-207B125): flexible with ferrules 10–35 mm² / solid 6–16 mm²
    • For Ø7.5 mm (DDB-215B125): flexible with ferrules 6–16 mm² / solid 10–25 mm²
  • Tightening torque: 6–7 Nm (main terminal Ø9.5 mm) / 2–3 Nm other terminals
  • Peak short-circuit current (Ipk): 30 kA (DDB-207B125) / 25 kA (DDB-215B125)
  • Icw: 4.5 kA
• Physical:
  • Side entry
  • Conductor bar: high-conductivity copper
  • Screws: zinc-plated steel
  • Housing: PA66-V0 base RAL7035 with removable translucent grey cover
  • Mounting: DIN-rail or surface-mounted
  • Protection rating: IP20
  • Insulation: insulating plate between poles and at housing back to isolate DIN rail
  • Dimensions (L x H x D): 94 x 50 x 50 mm (DDB-207B125); 162 x 50 x 50 mm (DDB-215B125)

Functionalities
Bipolar side-entry distribution blocks distribute power from a main feed to several outgoing circuits while optimizing wiring ergonomics. The side entry simplifies integration in compact panels and improves accessibility during connection. The high-conductivity copper bar reduces losses and withstands current stresses.

Applications
Suitable for low-voltage residential, commercial and industrial installations, particularly in sub-distribution panels, distribution cabinets and multi-feed installations where compactness, reliability and optimized cable routing are required.

Usage recommendations

• Prefer side entry to optimize cable routing in compact panels
• Respect the specified conductor sections according to terminal hole diameter
• Apply the recommended tightening torque to ensure optimal contact
• Disconnect power before any intervention
• Use ferrules for flexible conductors to ensure reliable connections
• Regularly check terminal tightness during maintenance

Variants and ordering codes
Order code | Primary current | Rated voltage (Un) | Number of outputs | Connection type | Stock
DDB-207B125 | 125A | 690V | 7 | Side connection | instock
DDB-215B125 | 125A | 690V | 15 | Side connection | instock

Documents
Product sheet and brochure available (see manufacturer's download area).

Technical specifications

• Model reference: DDB-2B125 (var. DDB-207B125, DDB-215B125)
• Rated current: 125 A
• Rated voltage: 690 V
• Poles: 2 (bipolar)
• Connections: 7 or 15 depending on variant with hole diameters detailed
• Materials: high-conductivity copper conductor, PA66-V0 housing
• Protection: IP20
• Mounting: DIN-rail or surface-mounted
• Recommended tightening torque: 6–7 Nm (main terminal) / 2–3 Nm (others)
• Peak short-circuit current (Ipk): 30 kA (DDB-207B125) / 25 kA (DDB-215B125)
• Icw: 4.5 kA
• Dimensions: 94 x 50 x 50 mm (7 connections); 162 x 50 x 50 mm (15 connections)