Shakti Switchgears

(L&K L&T) ML Series Contactors industrial applications ke लिए design kiye gaye reliable, heavy-duty power contactors hote ह. Ye mostly motor control, power switching, aur automation panels म use होत ह.

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Key Features

Heavy-duty design – Continuous industrial operation ke लिए strong build.

AC Coil / DC Coil options – Different voltage coils (110V, 230V AC, 24V DC, etc.) available.

Silver alloy contacts – Long life & better conductivity (less heating).

High mechanical & electrical life – 10–20 lakh operations tak.

Auxiliary contact options – 1NO+1NC / 2NO+2NC expand kiye ja sakte ह.

Easy DIN-rail or screw mounting – Panel installation simple.

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Typical Ratings (common ML models)

Model Motor Rating (HP) Current Rating Poles

ML-2 3–5 HP 9A 3P
ML-3 7.5–10 HP 12A 3P
ML-4 12.5–15 HP 18A 3P
ML-5 20–25 HP 25–32A 3P
ML-6 30–40 HP 40–50A 3P

(Exact rating coil voltage model ke hisaab se change ho sakta hai.)

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Applications

Star–Delta starters

Motor control centers (MCC)

Pump panels

Compressor, blower, conveyor drives

Industrial automation

Lighting & heating load switching

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What Information Identifies an ML Contactor?

Model number (ML-2, ML-4, ML-6 etc.)

Coil voltage (230V AC / 110V AC / 24V DC)

Current rating (A)

Contact configuration (NO/NC)

AC-3 duty suitability (motor load switching)

L&T MNX Series Contactor – Description

L&T MNX Series contactors India me sabse zyada use hone wale premium industrial contactors hain. Ye high reliability, long life & heavy-duty switching ke liye design kiye gaye hain. MNX series mainly motor control, automation, MCC/PCC, aur star–delta starters me use hoti hai.

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Key Features

High Electrical Life – AC-3 duty me long switching life.

Silver Alloy Contacts – Better conductivity, less heat, long durability.

Low Power Consumption Coil – Energy-efficient coil design.

Clip-on Auxiliary Blocks Compatible – 1NO/1NC, 2NO/2NC add kiye ja sakte hain.

Thermal Overload Relay Compatibility – MN series or TEX range ke relay direct mount hote hain.

IP20 Finger Protection – Safer terminal design.

DIN Rail / Screw Mounting – Quick installation.

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Current & Motor Ratings (Common Models)

Model AC-3 Current Motor HP @ 415V

MNX-9 9A 3–5 HP
MNX-12 12A 5–7.5 HP
MNX-18 18A 7.5–10 HP
MNX-22 22A 10–15 HP
MNX-32 32A 15–20 HP
MNX-40 40A 20–25 HP
MNX-50 50A 25–30 HP
MNX-70 70A 40–50 HP
MNX-110 110A 60–75 HP
MNX-140 140A 100 HP (approx)

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Applications

Motor control (pumps, blowers, compressors)

Star–Delta starter panels

MCC / PCC panels

Industrial automation

HVAC systems

Lighting/heater switching

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Coil Voltage Options

24V AC / 110V AC / 230V AC (most common)

24V DC / 110V DC (special orders)

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MNX Series Ki Specialities

Heavy-duty & dependable design for continuous 24×7 industrial use

Compatible with MN series thermal overload relays

Reduced coil humming even at voltage fluctuations

Arc chute technology for safer arc quenching

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MNX is a range of 3-pole power contactors from L&T, used to switch/control AC loads — e.g. motors, industrial machines, capacitor banks, supply changeovers, etc.

It is designed as a robust, industrial-grade contactor series — with good insulation (Ui up to ~690 V or more), impulse withstand voltage (e.g. 8 kV typical), and suitable for AC-3 duty (motor switching) or capacitor duty depending on variant.

Works across a wide current-rating span: from small loads (~9 A) up to heavy loads (hundreds of amps) depending on model.

Contactors in MNX series can be paired with thermal overload relays (for motor protection) — some relays mount directly on MNX contactors.

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Main MNX Models & Their Ratings

Here are some common MNX contactor models — this list is not exhaustive, but covers many of the popularly used ones.

Model Approx. Current Rating Typical Use / Notes

[L&T MNX 22 Power Contactor]() 22 A Light-duty motors or small loads (3-phase control)
[L&T MNX 25 Power Contactor]() 25 A Small to medium loads; general machine control, small motors
MNX 9 9 A Very small loads, control circuits, small motors — minimal power load.
MNX 12 12 A Slightly above minimal loads — small motors, control circuits.
MNX 18 18 A Small-to-medium loads, small industrial equipment.
MNX 40 40 A Medium-size motors / loads; industrial machines.
MNX 70 ~70 A Larger motors / heavier loads.
MNX 95 ~95 A Heavy loads / industrial grade motors / equipment.
MNX 110 ~110 A Higher-power motors / heavier loads, industrial machines.
(and higher-rated versions) — up to ~650 A (or more in some variants) Heavy-duty, large industrial motors, heavy equipment, capacitor switching.

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Typical Technical / Feature Highlights (General for MNX series)

Rated insulation voltage (Ui): ~ 690 V in many models.

Impulse withstand voltage (Uimp): often ~ 8 kV.

Utilization Category: AC-3 (suitable for motor switching) common; many models may also handle capacitor duty / supply changeover depending on design.

For mid-to higher-current variants: coil-on-top design (especially above 95 A) is common.

Auxiliary contacts: certain MNX models (especially with higher ratings) provide built-in auxiliary contacts (e.g. for control circuits / signalling).

Mechanical life and operational reliability: suitable for frequent switching, industrial conditions.

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When to Use MNX Contactors — Typical Applications

– Small motors / equipment: use 9 A–25 A models (e.g. MNX 9, MNX 22, MNX 25).
– Medium motors / general industrial machines: use 40 A–70 A models.
– High-power industrial motors, heavy machines, capacitor banks, supply-changeover setups: use 95 A–110 A or higher (up to 650 A) MNX contactors.
– For motor + overload protection: pair MNX contactor with compatible thermal-overload relay (many MNX-series relays mount directly onto contactor).

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MNX is a range of 3-pole power contactors from L&T, used to switch/control AC loads — e.g. motors, industrial machines, capacitor banks, supply changeovers, etc.

It is designed as a robust, industrial-grade contactor series — with good insulation (Ui up to ~690 V or more), impulse withstand voltage (e.g. 8 kV typical), and suitable for AC-3 duty (motor switching) or capacitor duty depending on variant.

Works across a wide current-rating span: from small loads (~9 A) up to heavy loads (hundreds of amps) depending on model.

Contactors in MNX series can be paired with thermal overload relays (for motor protection) — some relays mount directly on MNX contactors.

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Main MNX Models & Their Ratings

Here are some common MNX contactor models — this list is not exhaustive, but covers many of the popularly used ones.

Model Approx. Current Rating Typical Use / Notes

[L&T MNX 22 Power Contactor]() 22 A Light-duty motors or small loads (3-phase control)
[L&T MNX 25 Power Contactor]() 25 A Small to medium loads; general machine control, small motors
MNX 9 9 A Very small loads, control circuits, small motors — minimal power load.
MNX 12 12 A Slightly above minimal loads — small motors, control circuits.
MNX 18 18 A Small-to-medium loads, small industrial equipment.
MNX 40 40 A Medium-size motors / loads; industrial machines.
MNX 70 ~70 A Larger motors / heavier loads.
MNX 95 ~95 A Heavy loads / industrial grade motors / equipment.
MNX 110 ~110 A Higher-power motors / heavier loads, industrial machines.
(and higher-rated versions) — up to ~650 A (or more in some variants) Heavy-duty, large industrial motors, heavy equipment, capacitor switching.

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Typical Technical / Feature Highlights (General for MNX series)

Rated insulation voltage (Ui): ~ 690 V in many models.

Impulse withstand voltage (Uimp): often ~ 8 kV.

Utilization Category: AC-3 (suitable for motor switching) common; many models may also handle capacitor duty / supply changeover depending on design.

For mid-to higher-current variants: coil-on-top design (especially above 95 A) is common.

Auxiliary contacts: certain MNX models (especially with higher ratings) provide built-in auxiliary contacts (e.g. for control circuits / signalling).

Mechanical life and operational reliability: suitable for frequent switching, industrial conditions.

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When to Use MNX Contactors — Typical Applications

– Small motors / equipment: use 9 A–25 A models (e.g. MNX 9, MNX 22, MNX 25).
– Medium motors / general industrial machines: use 40 A–70 A models.
– High-power industrial motors, heavy machines, capacitor banks, supply-changeover setups: use 95 A–110 A or higher (up to 650 A) MNX contactors.
– For motor + overload protection: pair MNX contactor with compatible thermal-overload relay (many MNX-series relays mount directly onto contactor).

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Here’s a summary of L&T “ML series” contactors — what they are, what they offer, and key models/ratings in the series.

What is ML series

The ML series are power contactors from L&T, designed to switch/control AC loads — especially 3-phase motors or heavy electrical loads.

They conform to the standards IS 13947‑4‑1 / IEC 60947-4-1 (i.e. standard for low-voltage contactors) for safety and performance.

The ML series supports a broad range of current ratings — from small/light loads up to heavy-duty industrial loads.

ML contactors are 3-pole (typical for 3-phase power) and often include built-in auxiliary contacts (e.g. 2NO + 2NC) for control circuits.

Key Technical Summary (Across ML Series)

Parameter / Feature ML Series Capability / Typical Value

Poles Mostly 3-pole (for 3-phase loads)
Current Ratings (AC-3 / Motor Load) From small (e.g. 25 A) up to high (300 A) in many models
Insulation Voltage (Ui) Up to ~660 V (suiting 415 V / 440 V mains)
Compliance Standards IS 13947-4-1 / IEC 60947-4-1
Auxiliary Contacts Many models with built-in 2NO + 2NC; can add more contacts on higher-end types.
Duty / Utilization Suitable for AC-3 (motor switching), AC-1 (resistive/non-inductive loads), sometimes AC-2/AC-4 depending on load and relay setup.
Mechanical / Electrical Endurance Designed to handle industrial use — capable of many switching cycles (as per datasheets)

Common ML Models & Their Ratings

Here are some representative ML-series models (frame-size / type) and their approximate ratings. This is not an exhaustive list, but covers commonly used ones.

ML Model / Type AC-3 Current / Use Case / Notes

ML-1 / ML-1.5 (e.g. model SS91851) ~ 25 A — small to light 3-phase motors or smaller loads
ML-2 / ML-3 (e.g. ML-3 40 A) ~ 40 A (AC-3) / 45 A (AC-1) — moderate motors / general industrial loads
ML-4 / ML-6 ~ 70 A or more — medium-size industrial motors or heavier loads
ML-10 / ML-12 (e.g. ML-12 300 A) Heavy-duty applications — large motors, heavy industrial equipment, high-load switching up to ~300 A or more.

Typical Applications & Why ML Series Is Used

Ideal for industrial motor control — small to large three-phase motors (pumps, compressors, conveyors, machine tools).

Suitable for heavy-duty power loads and industrial power distribution — owing to high current rating of upper models.

Good for industrial plants with harsh conditions (temperature, humidity) — ML series rugged build and standard compliance help reliability.

Useful when needing auxiliary contacts for control circuits (signalling, interlocks, automation logic) — built-in in many ML models.

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If you like — I can prepare a full spec-sheet table for the entire ML series (from ML-1 up to ML-12) with coil-voltage options, contact ratings (AC-1 / AC-3), motor-power equivalents (kW/HP at 415 V), and typical industrial application examples — that helps pick the right model for your motor / load.

Here’s a summary of L&T “ML series” contactors — what they are, what they offer, and key models/ratings in the series.

What is ML series

The ML series are power contactors from L&T, designed to switch/control AC loads — especially 3-phase motors or heavy electrical loads.

They conform to the standards IS 13947‑4‑1 / IEC 60947-4-1 (i.e. standard for low-voltage contactors) for safety and performance.

The ML series supports a broad range of current ratings — from small/light loads up to heavy-duty industrial loads.

ML contactors are 3-pole (typical for 3-phase power) and often include built-in auxiliary contacts (e.g. 2NO + 2NC) for control circuits.

Key Technical Summary (Across ML Series)

Parameter / FeatureML Series Capability / Typical ValuePolesMostly 3-pole (for 3-phase loads) Current Ratings (AC-3 / Motor Load)From small (e.g. 25 A) up to high (300 A) in many models Insulation Voltage (Ui)Up to ~660 V (suiting 415 V / 440 V mains) Compliance StandardsIS 13947-4-1 / IEC 60947-4-1 Auxiliary ContactsMany models with built-in 2NO + 2NC; can add more contacts on higher-end types. Duty / UtilizationSuitable for AC-3 (motor switching), AC-1 (resistive/non-inductive loads), sometimes AC-2/AC-4 depending on load and relay setup. Mechanical / Electrical EnduranceDesigned to handle industrial use — capable of many switching cycles (as per datasheets)

Common ML Models & Their Ratings

Here are some representative ML-series models (frame-size / type) and their approximate ratings. This is not an exhaustive list, but covers commonly used ones.

ML Model / TypeAC-3 Current / Use Case / NotesML-1 / ML-1.5 (e.g. model SS91851)~ 25 A — small to light 3-phase motors or smaller loads ML-2 / ML-3 (e.g. ML-3 40 A)~ 40 A (AC-3) / 45 A (AC-1) — moderate motors / general industrial loads ML-4 / ML-6~ 70 A or more — medium-size industrial motors or heavier loads ML-10 / ML-12 (e.g. ML-12 300 A)Heavy-duty applications — large motors, heavy industrial equipment, high-load switching up to ~300 A or more.

Typical Applications & Why ML Series Is Used

Ideal for industrial motor control — small to large three-phase motors (pumps, compressors, conveyors, machine tools).

Suitable for heavy-duty power loads and industrial power distribution — owing to high current rating of upper models.

Good for industrial plants with harsh conditions (temperature, humidity) — ML series rugged build and standard compliance help reliability.

Useful when needing auxiliary contacts for control circuits (signalling, interlocks, automation logic) — built-in in many ML models.

If you like — I can prepare a full spec-sheet table for the entire ML series (from ML-1 up to ML-12) with coil-voltage options, contact ratings (AC-1 / AC-3), motor-power equivalents (kW/HP at 415 V), and typical industrial application examples — that helps pick the right model for your motor / load.

MNX is a range of 3-pole power contactors from L&T, used to switch/control AC loads — e.g. motors, industrial machines, capacitor banks, supply changeovers, etc.

It is designed as a robust, industrial-grade contactor series — with good insulation (Ui up to ~690 V or more), impulse withstand voltage (e.g. 8 kV typical), and suitable for AC-3 duty (motor switching) or capacitor duty depending on variant.

Works across a wide current-rating span: from small loads (~9 A) up to heavy loads (hundreds of amps) depending on model.

Contactors in MNX series can be paired with thermal overload relays (for motor protection) — some relays mount directly on MNX contactors.

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Main MNX Models & Their Ratings

Here are some common MNX contactor models — this list is not exhaustive, but covers many of the popularly used ones.

Model Approx. Current Rating Typical Use / Notes

[L&T MNX 22 Power Contactor]() 22 A Light-duty motors or small loads (3-phase control)
[L&T MNX 25 Power Contactor]() 25 A Small to medium loads; general machine control, small motors
MNX 9 9 A Very small loads, control circuits, small motors — minimal power load.
MNX 12 12 A Slightly above minimal loads — small motors, control circuits.
MNX 18 18 A Small-to-medium loads, small industrial equipment.
MNX 40 40 A Medium-size motors / loads; industrial machines.
MNX 70 ~70 A Larger motors / heavier loads.
MNX 95 ~95 A Heavy loads / industrial grade motors / equipment.
MNX 110 ~110 A Higher-power motors / heavier loads, industrial machines.
(and higher-rated versions) — up to ~650 A (or more in some variants) Heavy-duty, large industrial motors, heavy equipment, capacitor switching.

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Typical Technical / Feature Highlights (General for MNX series)

Rated insulation voltage (Ui): ~ 690 V in many models.

Impulse withstand voltage (Uimp): often ~ 8 kV.

Utilization Category: AC-3 (suitable for motor switching) common; many models may also handle capacitor duty / supply changeover depending on design.

For mid-to higher-current variants: coil-on-top design (especially above 95 A) is common.

Auxiliary contacts: certain MNX models (especially with higher ratings) provide built-in auxiliary contacts (e.g. for control circuits / signalling).

Mechanical life and operational reliability: suitable for frequent switching, industrial conditions.

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When to Use MNX Contactors — Typical Applications

– Small motors / equipment: use 9 A–25 A models (e.g. MNX 9, MNX 22, MNX 25).
– Medium motors / general industrial machines: use 40 A–70 A models.
– High-power industrial motors, heavy machines, capacitor banks, supply-changeover setups: use 95 A–110 A or higher (up to 650 A) MNX contactors.
– For motor + overload protection: pair MNX contactor with compatible thermal-overload relay (many MNX-series relays mount directly onto contactor).

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