L&T DN3B-400D 320A 3-Pole / 36kA MCCB with Thermal Magnetic Release (CM9840100Q00G)

L&T DN3B-400D 320A 3-Pole / 36kA MCCB with Thermal Magnetic Release (CM9840100Q00G)

Reliable 320A MCCB for Industrial Circuit Protection

The L&T DN3B-400D (320A) 3-pole MCCB with thermal magnetic release is designed to deliver reliable circuit protection for industrial and commercial applications. With a rated current of 320A and a breaking capacity of 36kA, this MCCB ensures advanced protection against overloads and short circuits. Its thermal magnetic release mechanism offers fast and efficient response to electrical faults, making it suitable for power distribution systems, manufacturing plants, and energy-intensive environments. Compliant with global standards, such as IEC 60947-2, the DN2B-400D ensures consistent performance in demanding applications. Its rated operational voltage of 690V and insulation voltage of 800V ensure long-lasting performance in medium to heavy-duty applications. The compact design of the L&T DN2B-400D MCCB allows for easy installation and maintenance, offering a cost-effective solution for long-term circuit protection in industrial environments.

Technical Specifications of L&T DN3B-400D 320A MCCB

Rated Operational Current	320
Mechanical Life (No. of operating cycles)	10000
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)	DN3B MCCB 320 3P 415V AC 36kA Thermal Magnetic 50/60 Hz
Rated Sevice circuit breaking capacity (Ics as % of Icu) @415VAC	36kA
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)	205
Depth(mm)	111

 

The L&T DN2B-400D 320A MCCB ensures efficient circuit protection, adhering to international safety standards, offering dependable performance in industrial settings.

Overview of L&T DN3B-400D 320A 3-Pole MCCB

The L&T DN3B-400D 320A 3-pole MCCB (Molded Case Circuit Breaker) with thermal magnetic release provides robust circuit protection for industrial and commercial electrical systems. With a rated current of 320A and a breaking capacity of 36kA, this MCCB offers reliable protection against overloads and short circuits. It is ideal for use in power distribution networks, manufacturing plants, and other energy-intensive environments. Built in compliance with international safety standards (IEC 60947-2), the L&T DN3B-400D guarantees dependable performance even under challenging conditions. Its rated operational voltage of 690V and insulation voltage of 800V ensures safe and consistent protection for medium-duty to heavy-duty applications. The MCCB’s compact design facilitates easy installation and maintenance, making it a cost-effective solution for professionals seeking reliable circuit protection.

Why Choose the L&T DN3B-400D 320A MCCB?

The L&T DN3B-400D 320A MCCB provides advanced protection with its thermal magnetic release technology, ensuring fast and efficient protection for industrial electrical systems. It meets global safety standards, making it an ideal choice for critical power systems.

Technical Specifications of L&T DN3B-400D 320A MCCB