DIN rail-mounted terminal block DTB-1E150x series
panel-mountscrew connectionpower

DIN rail-mounted terminal block - DTB-1E150x series - Lettel - panel-mount / screw connection / power
DIN rail-mounted terminal block - DTB-1E150x series - Lettel - panel-mount / screw connection / power
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Characteristics

Mounting
DIN rail-mounted, panel-mount
Connection
screw connection
Other characteristics
power
Number of poles
bipolar
Cross-section

Min.: 35 mm²
(0.05 in²)

Max.: 150 mm²
(0.23 in²)

Current

Min.: 290 A

Max.: 320 A

Nominal voltage

Min.: 1,000 V

Max.: 1,500 V

Description

Presentation
1-pole, 2-cable high-current junction block for large-section conductors (copper or aluminium) from 35 to 150 mm². Maximum current: 320 A (Cu) / 290 A (Al). Compliant with EN60947-7-1. Conductive grease included to optimize contact.

Electrical characteristics
  • Maximum current: 320 A (Cu) / 290 A (Al)
  • Compatible conductors: Copper (Cu) or Aluminium (Al)
  • Cross-section range: 35–150 mm²
  • Fastening: hexagon socket head screw
  • Tightening torque:
    • 20 Nm (35–95 mm²)
    • 30 Nm (120–150 mm²)
  • Rated voltage: 1000 V AC / 1500 V DC
  • Conductive grease: included
  • Standard: compliant with EN60947-7-1


Physical characteristics
  • Housing: PA66 V0 self-extinguishing, removable cover, available in 3 color options for functional identification (light grey; light grey and blue; green and yellow)
  • Conductive body: tinned aluminium
  • Mounting: DIN rail or surface mount
  • Number of poles: 1
  • Number of cables: 2 per block
  • Protection: IP20


Packaging
  • Sold individually
  • Box: 5 pieces
  • Carton: 140 pieces


Features
Block designed for connection of very large-section conductors, ensuring reliable electrical contact between copper and aluminium cables and high mechanical strength under heavy loads.

Applications
  • Heavy electrical distribution installations (main switchboards)
  • Industrial power cabinets
  • Main incoming lines, busbars and high-current distribution


Usage advice
  • Cable selection: 35–150 mm², copper or aluminium
  • Ferrules: required for flexible conductors to ensure uniform contact
  • Tightening: apply 20–30 Nm depending on conductor cross-section
  • Mounting: fix on DIN rail or surface mount according to cabinet architecture
  • Identification: use housing colors to identify phase, neutral and earth
  • Maintenance: regularly check tightening and cleanliness of contacts


Variants and order codes
  • DTB-1E150 — Cu: 320 A / Al: 290 A — Cu/Al: 35–150 mm² — Color: Light grey — in stock
  • DTB-1E150B — Cu: 320 A / Al: 290 A — Cu/Al: 35–150 mm² — Color: Light grey / blue — in stock
  • DTB-1E150D — Cu: 320 A / Al: 290 A — Cu/Al: 35–150 mm² — Color: Green / yellow — in stock


Technical specifications
  • Maximum current: 320 A (Cu) / 290 A (Al)
  • Conductor cross-section: 35–150 mm²
  • Rated voltage: 1000 V AC / 1500 V DC
  • Conductive body: tinned aluminium
  • Housing: PA66 V0, removable cover
  • Fastening: hexagon socket head screw, 20–30 Nm depending on section
  • Mounting: DIN rail or surface mount
  • Protection: IP20
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.