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DIN rail-mounted terminal block DTB-X3E35
panel-mountscrew connectioninsulated

DIN rail-mounted terminal block - DTB-X3E35 - Lettel - panel-mount / screw connection / insulated
DIN rail-mounted terminal block - DTB-X3E35 - Lettel - panel-mount / screw connection / insulated
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Go to the Lettel website for more information

Characteristics

Mounting
DIN rail-mounted, panel-mount
Connection
screw connection
Other characteristics
copper, insulated, three-phase
Number of poles
3-pole
Cross-section

Max.: 35 mm²
(0.05 in²)

Min.: 2.5 mm²
(0 in²)

Current

Max.: 135 A

Min.: 120 A

Nominal voltage

1,000 V, 1,500 V

Description

Overview
  • Three-phase 3-pole junction block designed to centralize power distribution across three phases (L1 / L2 / L3) with copper or aluminium conductors, for cross-sections from 2.5 to 35 mm².


Electrical characteristics
  • Maximum current: 135 A (Copper) / 120 A (Aluminium).
  • Connection: accepts copper (Cu) or aluminium (Al) conductors.
  • Cross-section range: 2.5 to 35 mm² with recommended tightening torques:
    • 2.5 to 16 mm²: torque 3 Nm
    • 25 to 35 mm²: torque 6 Nm
  • Rated voltage: 1000 V AC / 1500 V DC.
  • Conductive grease supplied to ensure optimal contact.
  • Standard: compliant with EN60947-7-1.


Physical characteristics
  • Housing: PA66 self-extinguishing V0, removable cover.
  • Conductor body: tinned aluminium.
  • Mounting: DIN rail or surface mounting.
  • Number of poles: 3 (inputs L1 / L2 / L3).
  • Outputs per pole: 2.
  • Protection: IP20.


Features and applications
  • Enables compact, balanced distribution of power across three phases, reducing intermediate connections and improving installation reliability.
  • Typical applications: three-phase electrical panels, industrial distribution boards and commercial installations requiring balanced and secure three-phase supply.


Usage recommendations
  • Cable selection: use appropriate cross-sections (2.5 to 35 mm²) in copper or aluminium.
  • Ferrules: recommend using ferrules for flexible cables to ensure uniform contact.
  • Tightening: apply the recommended torque according to cross-section (3–6 Nm) to ensure a reliable connection.
  • Mounting: fix on DIN rail or surface mount according to cabinet architecture.
  • Cable organization: distribute conductors correctly across the three poles for optimal balancing.
  • Identification: clearly mark L1, L2 and L3 to facilitate operation and maintenance.
  • Maintenance: regularly check tightening and contact cleanliness.


Packaging
  • Sold individually.
  • Box: 6 pieces.
  • Carton: 198 pieces.


Technical specifications
  • Model: DTB-X3E35
  • Maximum current: 135 A (Cu) / 120 A (Al)
  • Accepted cross-sections: 2.5 to 35 mm²
  • Tightening torques: 2.5–16 mm² = 3 Nm; 25–35 mm² = 6 Nm
  • Rated voltage: 1000 V AC / 1500 V DC
  • Materials: housing PA66 V0; conductor body tinned aluminium
  • Mounting: DIN rail or surface
  • Number of poles: 3
  • Outputs per pole: 2
  • Ingress protection: IP20
  • Standard: EN60947-7-1
  • Accessories: conductive grease included
Go to the Lettel website for more information

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*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.