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L&T (d sine - DN3-400-M) 320 AMP MCCB

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MOQ : 100 Pieces

L&T (d sine - DN3-400-M) 320 AMP MCCB Specification

Rated Short Circuit Making Current
Icm = 80 kA

Rated Short Circuit Breaking Current
Icu = 36 kA at 415V AC

Mechanical Life
Up to 20,000 operations

Breaking Capacity
36 kA at 415V AC

Phase
Three Phase

Product Type
MCCB (Molded Case Circuit Breaker)

Installation Options
Fixed, Panel Mounting

Function
Overcurrent and Short Circuit Protection

Poles Number
3P (Three Pole)

Rated Voltage
415V AC

Rated Current
320A (Ampere)

Rated Frequency
50/60 Hz

Curves
Type C (Standard for MCCB)

Temperature Protection
Integrated Thermal & Magnetic Trip Unit

Weight
Approx. 5.4 kg

Color
Grey/Black

Accessory Compatibility
Auxiliary Switch, Alarm Switch, Shunt Trip, Under Voltage Release

Adjustment Range of Overload Release
256A to 320A

Model
d sine - DN3-400-M

Connection Type
Box Terminals / Cable Lugs

Frame Size
400A

Operating Voltage Range
220V to 690V AC

Dimensions (W x H x D)
105 mm x 260 mm x 110 mm

Service Condition
Suitable for tropical climates

Trip Type
Thermal Magnetic

Degree of Protection
IP20 (Front Terminals)

Operating Temperature
-10°C to +60°C

Suitable for
Distribution System Protection, Motor and Generator Protection

Rated Insulation Voltage (Ui)
800V

Rated Impulse Withstand Voltage (Uimp)
8 kV

L&T (d sine - DN3-400-M) 320 AMP MCCB Trade Information

Minimum Order Quantity
100 Pieces

Supply Ability
100 Pieces Per Day

Delivery Time
2 Days

Sample Available
Yes

Main Domestic Market
All India

About L&T (d sine - DN3-400-M) 320 AMP MCCB

MCCB stands forA Molded Case Circuit Breaker. It is another type of electrical protection device which is used when load current exceeds the limit of a miniature circuit breaker. The MCCB provides protection against overload, short circuit faults and is also used for switching the circuits.

Reliable Protection for Industrial Applications

The L&T d sine - DN3-400-M 320A MCCB delivers advanced protection against overcurrent and short circuits in demanding industrial settings. Its integrated thermal and magnetic trip mechanisms ensure rapid and accurate response during abnormal conditions, safeguarding equipment and personnel. This breaker meets global standards, offering consistent performance in motor, generator, and distribution system protection.

Versatile Connectivity and Accessory Options

Designed for flexible installation, the MCCB is suitable for both box terminals and cable lugs, making it compatible with a range of wiring systems. Additionally, it can be easily upgraded with auxiliary switches, alarm switches, shunt trips, and under voltage releases, allowing adaptation to various monitoring and control needs within electrical panels.

FAQ's of L&T (d sine - DN3-400-M) 320 AMP MCCB:

Q: How is the L&T d sine - DN3-400-M 320A MCCB installed?

A: The MCCB can be installed using either fixed or panel mounting methods, and it accommodates box terminals or cable lugs for wiring connections. Proper installation should follow the manufacturer's guidelines to ensure optimal performance and safety.

Q: What are the main applications for this MCCB model?

A: This MCCB is designed for distribution system protection, motor and generator safeguarding, making it suitable for industrial, commercial, and infrastructure projects requiring reliable overcurrent and short-circuit protection.

Q: When should the adjustable overload release be set, and within what range?

A: The adjustable overload release should be set during initial installation or maintenance, tailored to the specific circuit requirement. It can be adjusted within a range of 256A to 320A, allowing versatility for different protection needs.

Q: Where can this model be used regarding climate conditions?

A: Engineered for tropical climates, the d sine - DN3-400-M operates reliably in varying temperatures, from -10C to +60C, ensuring consistent protection in diverse environmental conditions.

Q: What is the process for selecting compatible accessories for this MCCB?

A: You can enhance functionality by selecting from compatible accessories like auxiliary switches, alarm switches, shunt trips, and under voltage releases. These accessories are designed to integrate seamlessly for advanced monitoring and control.

Q: How does the MCCB benefit users compared to other circuit protection devices?

A: This MCCB provides high breaking capacity (36 kA at 415V AC), durable mechanical life (up to 20,000 operations), and flexible adjustment, offering superior reliability and reducing downtime in critical power systems.

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