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LT CONTACTOR - MNX 40

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LT CONTACTOR - MNX 40 Specification

Shape
Rectangular

Humidity %
95% RH (non-condensing)

Surface Finish
Smooth

IP Rating
IP20

Efficiency
High

Connector Type
Screw Clamp

Power Factor
0.8

Overheating Protection
Yes (with thermal overload relay accessory)

Mounting Type
DIN rail/Panel mount

Insulation Material
Thermoset / Thermoplastic

Operating Temperature
-5°C to +60°C

Feature
Compact design, high durability, silent operation

Product Type
LT Contactor

Application
Control and switching of motors and power circuits

Protection Level
IP20

Frequency (MHz)
50 Hz

Rated Voltage
690 V AC

Energy Consumption
5.2 VA (holding)

Output Type
AC

Color
Grey & Black

Dimension (L*W*H)
90 x 45 x 95 mm

Weight
0.62 kg

Size
Standard

Phase
Three Phase

Input Voltage
220-240 V AC (coil voltage)

Material
High grade engineering plastic

Connection Type
Screw Terminal

No Of Poles
3 Pole + 1 NO/NC (auxiliary)

Electrical Life
1 million operations at AC3 duty

Panel Cutout
Provided as per standard

Terminals
Screw type, self-lifting terminals

Auxiliary Contacts
1 NO + 1 NC (optional up to 4)

Current Rating
40 Amps AC3

Coil Consumption
5-8 VA

Contact Material
Silver alloy contacts

Flame Retardance
UL94-V0

Max Switching Voltage
690 V AC / 440 V DC

Ambient Temperature
-5 °C to +60 °C

Mechanical Life
10 million operations

Coil Insulation Class
Class F

Shock Resistance
15g, 11 ms

Vibration Resistance
5g (5-300 Hz)

Storage Temperature
-40°C to +70°C

LT CONTACTOR - MNX 40 Trade Information

Payment Terms
Cash in Advance (CID)

Sample Available
Yes

Main Domestic Market
All India

About LT CONTACTOR - MNX 40

The comprehensive range of contactors from L&T Switchgear is your key to meet every demand and suit every requirement across diverse applications. Whether it is motor control, capacitor switching, supply changeover or any other single phase or three phase application, you can always be assured of finding a perfect solution in our extensive range of contactors. These contactors are complemented with a range of thermal overload relays.

Robust Performance and Longevity

Engineered for endurance, the MNX 40 contactor excels with a mechanical life of 10 million operations and an electrical lifespan of 1 million operations under AC3 conditions. Its high-grade engineering plastic body and silver alloy contacts ensure consistent performance and durability, even in demanding industrial environments. Additionally, shock resistance up to 15g and vibration resistance of 5g (5-300 Hz) provide extra robustness for reliable motor and power circuit switching.

Versatile and User-Friendly Design

Offering effortless installation, the compact MNX 40 features screw-type, self-lifting terminals and supports both DIN rail and panel mounting. Its enhanced safety is ensured by IP20 protection and flame retardant (UL94-V0) materials. With a wide ambient temperature range (-5C to +60C) and up to 95% humidity tolerance, it's suitable for varied industrial settings.

Enhanced Control and Safety Features

This contactor supports auxiliary contacts extension (up to 4), and can be paired with a thermal overload relay for overheating protection. Designed for three-phase, 50 Hz applications, it ensures efficient and reliable motor starting and stopping, with a power factor of 0.8 and low coil energy consumption of just 5.2 VA during holding. Its smooth surface finish and compact rectangular form maximize panel space efficiency.

FAQ's of LT CONTACTOR - MNX 40:

Q: How is the LT CONTACTOR - MNX 40 typically used in industrial applications?

A: The MNX 40 is primarily used for controlling and switching three-phase motors and power circuits up to 40 Amps (AC3). Its robust design, auxiliary contacts, and overload protection options make it suitable for automation panels, machinery, and motor starters.

Q: What installation methods are available for the MNX 40 contactor?

A: The MNX 40 supports both DIN rail and panel mounting, allowing flexibility in standard control panels. Its screw-type, self-lifting terminals also simplify wiring and secure connection.

Q: When should auxiliary contacts be added to the contactor?

A: Auxiliary contacts should be added when additional signaling or control functions are required, such as remote indication of the contactor status or interfacing with control relays. The MNX 40 allows up to 4 auxiliary contacts, providing ample expansion for complex circuits.

Q: Where can the MNX 40 be installed, considering environmental conditions?

A: This contactor can be installed in locations with ambient temperatures ranging from -5C to +60C and storage temperatures as low as -40C. With IP20 protection and humidity tolerance up to 95% RH, it is ideal for most industrial settings in India and abroad.

Q: What benefits does the silver alloy contact material offer?

A: Silver alloy contacts ensure superior conductivity, minimized arc erosion, and longer operational life. This enhances switching reliability and lowers maintenance requirements over time.

Q: How does the contactor protect against overheating?

A: The MNX 40 contactor can be paired with a thermal overload relay accessory for reliable protection against overheating, safeguarding motors and connected equipment from thermal damage.

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