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L&T MNX 400 STAR DELTA STARTER

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L&T MNX 400 STAR DELTA STARTER Specification

Overheating Protection
Thermal Overload Relay

IP Rating
IP20

Feature
Heavy Duty, High Breaking Capacity

Insulation Material
Thermoplastic/Heat Resistant Polymer

Efficiency
High

Connector Type
Cable Lug/Screw Terminal

Humidity %
Up to 90% RH Non-condensing

Operating Temperature
-5C to +50C

Surface Finish
Powder Coated

Power Factor
0.95

Shape
Rectangular

Mounting Type
Panel/Wall Mounting

Product Type
Star Delta Starter

Application
Industrial Motors, Pump Control

Protection Level
Overload Relay, Short Circuit Protection

Frequency (MHz)
50 Hz

Rated Voltage
415 V AC

Energy Consumption
Low

Output Type
Direct-on-line and Star Delta

Color
Grey & Blue

Dimension (L*W*H)
285 mm x 195 mm x 160 mm

Weight
7.2 kg

Input Voltage
415 V AC

Size
Standard MNX 400 Series

Phase
Three Phase

Material
High Grade ABS & Metal

Connection Type
Screw Type Terminal

No Of Poles
3

Control Supply Voltage
230/415 V AC

Starter Model
MNX 400 Star Delta

Standards Compliance
IS/IEC 60947-4-1

Auxiliary Contacts
1NO+1NC

Operating Mechanism
Electromagnetic Contactor

Mechanical Life
1 Million Operations

Electrical Life
0.2 Million Operations, AC3

Short Circuit Withstand Capacity
10 kA

Enclosure
Sheet Steel Enclosure

Contactor Rating
40A AC3

Relay Range
23-32A (Adjustable)

L&T MNX 400 STAR DELTA STARTER Trade Information

Payment Terms
Cash in Advance (CID)

Sample Available
Yes

Main Export Market(s)
Asia

Main Domestic Market
All India

About L&T MNX 400 STAR DELTA STARTER

Star/Delta starters are probably the most common reduced voltage starters. They are used in an attempt to reduce the start current applied to the motor during start as a means of reducing the disturbances and interference on the electrical supply.

Engineered for Industrial Reliability

The MNX 400 Star Delta Starter is designed for heavy-duty motor applications, providing dependable control and protection. Its high mechanical and electrical life cycles ensure long-term performance, even in challenging conditions. Superior build with high grade ABS and metal chassis delivers robust insulation and protection.

Comprehensive Protection and Efficiency

With integrated thermal overload and short circuit protection, this starter guards valuable equipment against faults. It is tailored for industrial pumps and motors, offering adjustable relay settings, high breaking capacity, and low energy consumption to maximize operational efficiency.

Easy Integration and Maintenance

The panel/wall mounting options and screw type terminals enable simple installation. The powder-coated surface resists corrosion, while the IP20 rating and cable lug compatibility ensure safety and ease during maintenance. Standard MNX 400 sizing helps streamline upgrades or replacements in existing setups.

FAQ's of L&T MNX 400 STAR DELTA STARTER:

Q: How does the MNX 400 Star Delta Starter improve motor starting?

A: It uses electromagnetic contactors to switch motors from star to delta configuration, reducing starting current and mechanical stress, which extends the life of the motor and minimizes power surges.

Q: What applications are suitable for the MNX 400 Star Delta Starter?

A: This starter is ideal for industrial motors and pump control in three-phase systems, especially where frequent starting and stopping are required, such as in manufacturing plants and utility pumps.

Q: When should I adjust the relay range setting?

A: Adjust the relay range (23-32A) before commissioning to match your motor's rated current. This ensures optimal overload protection tailored to your specific equipment.

Q: Where should the starter be installed for best performance?

A: Install on a panel or wall in well-ventilated, non-condensing environments with up to 90% relative humidity and temperatures between -5C and +50C, ensuring accessibility for maintenance and safety checks.

Q: What is the process for connecting the starter?

A: The MNX 400 uses screw-type terminals and cable lugs for secure connections. Follow standard wiring diagrams, and ensure all connections are tightened and insulated before energizing the system.

Q: How does built-in protection benefit users?

A: Integrated thermal overload and short circuit relays help prevent equipment damage and downtime, offering peace of mind and safeguarding costly machinery in industrial settings.

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