L&T DN3-400N ( 250-320A) / ( 320-400A) - 3 POLE / 50kA MCCB With Thermal Magnetic Release

The dsineDN Series

The dsineDN series is characterized by its state-of-the-art design, user-friendly features, and a wide spectrum of protection, making it the hallmark of the range. Recognized for its ergonomics, aesthetics, and compactness, it belongs to a new generation of MCCBs.

Specially designed and developed for extreme tropical conditions, it promises reliable performance in high ambient and humid environments. The dsineDN Series complies with the latest standards such as IS/IEC 60947-2, IEC 60947-2, and EN 60947-2. It also holds NABL accreditation, and the products conform to international standards with CE marking.

dsine, unfailingly, caters to the ever-evolving needs of customers, derived after in-depth analysis and customer feedback. Understanding our customers' requirements and demands, our contemporary range of MCCBs never falls short of ensuring complete customer satisfaction. Moreover, complemented by a host of accessories, the dsine range delivers comprehensive solutions to customer applications, ensuring operational safety, reliability, and versatility.

Technical Specifications

• Rated Operational Current
  320
• Mechanical Life (No. of operating cycles)
  15000
• No. of Poles
  3P
• Rated Operational voltage (Ue)
  415V AC
• Rated Insulation Voltage Ui (V)
  800 V
• Conformance to Standards
  IEC 60947-1, EN 60947-1, IS/IEC 60947-1 IEC 60947-2, EN 60947-2, IS/IEC 60947-2 IEC 60947-3, EN 60947-3, IS/IEC 60947-3 IEC 60947-4, EN 60947-4, IS/IEC 60947-4
• Rated impulse withstand voltage (Uimp)
  8 kV
• Operational Frequency (Hz)
  50/60 Hz
• Release Type
  TM
• Rated Short Circuit Breaking capacity Icu(kA)
  DN3-400N MCCB 320 3P 415V AC 50kA Thermal Magnetic 50/60 Hz
• Rated Sevice circuit breaking capacity (Ics as % of Icu) @415VAC
  50kA
• Ambient temperature
  -5°C to 55°C
• Suitable for isolation
  Yes
• Load-line bias
  No
• Electrical Life (Operating Cycles)
  4000
• IP Protection
  IP40
• Pollution Degree
  III
• Width(mm)
  140
• Height(mm)
  266
• Depth(mm)
  111.5