Legrand DMX³ 4000 & DMX³-I 4000 Circuit Breakers and Trip Free Switches

Technical Data Sheet

Manufacturer: Legrand

Document Reference: F03885EN-01

Publication Dates: Created: 12/10/2022, Updated: 08/09/2025

1. Use

The DMX³ air circuit breakers are designed to meet protection requirements for low voltage electrical installations (IEC/EN 60364-1) up to 6300 A. They offer electric and mechanical robustness, high breaking capacity, and extensive accessorizing options. The DMX³-I series provides trip-free switches with enhanced insulation, robustness, closing, and withstand capabilities, contributing to plant energy efficiency and "green aspects".

2. Range

2.1 DMX³ 4000 Fixed Version (PU MP2.10/MP4.10)

In (A)50 kA65 kA100 kA
3P4P3P4P3P4P
32000 283 670 283 770 283 870 283 970 284 070 284 17
40000 283 680 283 780 283 880 283 980 284 080 284 18

2.2 DMX³ 4000 Draw-out Version (PU MP2.10/MP4.10)

In (A)50 kA65 kA100 kA
3P4P3P4P3P4P
32000 284 270 284 370 284 470 284 570 284 670 284 77
40000 284 280 284 380 284 480 284 580 284 680 284 78

2.3 DMX³-I 4000 Trip-Free Switches (Fixed/Draw-out Version)

In (A)Fixed versionDraw-out version
3P4P3P4P
32000 282 440 282 540 282 840 282 94
40000 282 450 282 550 282 850 282 95

2.4 Composition

Main parts constituting the circuit breaker

Fixed version:

Diagram showing a fixed version circuit breaker with numbered components.

Draw-out version:

Diagram showing a draw-out version circuit breaker with numbered components.

Draw-out base components:

Diagram of a draw-out base unit showing terminal blocks, shutters, and connection points.

DMX³ circuit breakers are equipped with auxiliary contacts (expandable up to 10) and a doorframe. The fixed version includes rear terminals for horizontal connections with bars. The draw-out version features flat rear terminals and comes with a base equipped with an extraction crank and isolating components. Door sealing is also included.

3. Technical Characteristics

3.1 Electrical Characteristics

Circuit breaker

ParameterDMX³ 4000 (50 kA)DMX³ 4000 (65 kA)DMX³ 4000 (100 kA)
Frame current4000 A
Rated current In3200 A / 4000 A
Poles3P - 4P
Rated insulation voltage Ui1000 V
Rated impulse withstand voltage Uimp12 kV
Rated operational voltage (50/60Hz) Ue690 V
Rated ultimate short-circuit breaking capacity Icu (kA)220/240 V~: 50380/415 V~: 65440/460 V~: 100
480/500 V~: 50600 V~: 65690 V~: 75
220/240 V~: 50380/415 V~: 65440/460 V~: 100
480/500 V~: 50600 V~: 65690 V~: 75
220/240 V~: 50380/415 V~: 65440/460 V~: 100
480/500 V~: 50600 V~: 65690 V~: 75
Rated service short-circuit breaking capacity Ics (% Icu)100%

Trip-free switches

ParameterDMX³-I 4000 (3P)DMX³-I 4000 (4P)
Rated current In (A)3200 A / 4000 A3200 A / 4000 A
Poles3P4P
Rated insulation voltage Ui1000 V
Rated impulse withstand voltage Uimp12 kV
Rated operational voltage (50/60Hz) Ue690 V
Category of useAC23A
Rated short circuit making capacity Icm (kA)220/240 V~: 187380/415 V~: 187
440/460 V~: 187480/500 V~: 187
600 V~: 165690 V~: 143

General Electrical Characteristics (Circuit Breaker & Trip-Free Switches)

ParameterValue
Suitable for insulationYes
Neutral protection (% Ith)0 - 50 - 100
Operation temperature-25 °C to +70 °C
Storage temperature-25 °C to +85 °C

Rated Short Time Withstand Current (Icw)

Rated short time withstand current Icw (kA) for t = 1sDMX³ 4000
220/240 V~380/415 V~440/460 V~480/500 V~600 V~690 V~
50 kA105105105105105105
65 kA143143143143132121
100 kA220220220220165143
Rated short time withstand current Icw (kA) for t = 3sDMX³ 4000
220/240 V~380/415 V~440/460 V~480/500 V~600 V~690 V~
50 kA505050505050
65 kA656565656055
100 kA858585857565
ParameterDMX³-I 4000
Rated short time withstand current Icw (kA) for t = 1s85
Rated short time withstand current Icw (kA) for t = 3s65

Individual Pole Short-Circuit Current (I∆)

ParameterValue
220/240 V~1.2 times the maximum setting of the defined time delay release tripping current (Isd) (1)
380/415 V~
440/460 V~
480/500 V~
600 V~
690 V~

(1) For more details, please consult Legrand.

Phase Limit Trip Current

In (A)Thermal (Ir)Magnetic (Isd)
0.2 x In1 x In1.5 x Ir min10 x Ir max
32006403200192032000
40008004000240040000

Note: For neutral adjustment, consider the values ratios 0%, 50% and 100% on set currents.

3.3 Mechanical Characteristics

Endurances

ParameterDMX³ 4000 / DMX³-I 4000
Mechanical Endurance (cycles)10000 (w/o maintenance); 20000 (with maintenance)
Electrical Endurance (cycles)10000 (w/o maintenance)
Category of useB

Notes:

Electrodynamic Forces

The table below indicates suggested distances to maintain between the breaker and the first fixing point of the conductor and bars to reduce the effects of electrodynamic stresses during a short circuit. The anchorage system should use isolators suitable for the conductor type and operating voltage.

Icc (kA) max5065100
"X" max. (mm)300250150

Diagram illustrating the "X" max distance for conductor/bar connections to mitigate electrodynamic stresses.

3.4 Power Losses per Pole at In/Ie

Rated current In (A)FixedDraw-out
Circuit breakerTrip-free switchesCircuit breakerTrip-free switches
320083.3163.8130.1256.0
4000130.1256.0163.8256.0

Note: Power loss values are measured as per IEC 60947-2 (Annex G) for circuit-breakers and IEC 60947-1 for switches. Values are for a single phase.

3.5 Electronic Protection Unit

DMX³ 4000 circuit breakers can be equipped with MP2.10 or MP4.10 electronic protection units. Key features include:

Protection Unit Types

FeaturesDisplayWith MeasurePower ConsumptionCat.Nos
MP2.10LED matrixNO55 mA0 283 04
LED matrixYES69 mA0 283 05*
MP4.10LCD screenNO62.5 mA0 283 06
LCD screenYES80 mA0 283 07*

* Requires CX³ EMS power supply module (Cat.No 4 149 45) for metering function.

Protective Functions

The protection units are fully configurable to adapt settings to specific installation requirements. Integrated measurement units can display voltage, power, frequency, and energy. Alarms can be programmed for various parameters.

4. Installation Rules

Temperature Derating

Rated current and its adjustment must consider ambient temperature variations and installation conditions. The tables below show maximum long-time (LT) protection settings based on ambient temperature.

Temperature deratings for DMX³/DMX³-I 4000 Fixed Version (Horizontal Terminals)

Temperatureup to 40 °C50 °C60 °C65 °C70 °C
Imax (A)Ir/InImax (A)Ir/InImax (A)Ir/InImax (A)Ir/InImax (A)Ir/In
DMX³ 400032001320013200131360.9830080.94
DMX³-I 40004000139200.9836800.9234400.8631200.78

Temperature deratings for DMX³/DMX³-I 4000 Draw-out Version (Horizontal Terminals)

Temperatureup to 40 °C50 °C60 °C65 °C70 °C
Imax (A)Ir/InImax (A)Ir/InImax (A)Ir/InImax (A)Ir/InImax (A)Ir/In
DMX³ 400032001320013200130720.9628800.90
DMX³-I 40004000137600.9434400.8632000.8029600.74

Climatic Conditions & EMC

Climatic Conditions: According to IEC/EN 60947-1 Annex Q, Cat. F (temperature, humidity, vibration, shock, salt mist). Pollution degree: 3 (IEC/EN 60947-2). Electromagnetic Disturbances (EMC): According to IEC/EN 60947-2 - Annex F.

Altitude Derating

Altitude (m)<2000300040005000
Rated current (at 40°C/50°C) In (A)In0.98 x In0.94 x In0.9 x In
Rated voltage Ue (V)690600500440
Rated insulation voltage Ui (V)1000900750600
Dielectric withstand (V)3500320025002000

5. Dimensions and Weights

5.1 Dimensions

DimensionVersionDMX³ 4000 / DMX³-I 4000 (mm)
Height3P-fixed419
3P-Draw-out473
4P-Fixed419
4P-Draw-out473
Depth3P-fixed354
3P-Draw-out433
4P-Fixed354
4P-Draw-out433
Width3P-fixed408
3P-Draw-out425
4P-Fixed538
4P-Draw-out555

5.2 Weights

VersionDMX³ 4000 (kg)DMX³-I 4000 (kg)
3P-fixed5554
3P-Draw-out(1)106105
4P-Fixed6867
4P-Draw-out(1)134133

(1) Weights for draw-out releases are to be intended with base.

5.3 Fixed Version Diagrams

Diagrams showing frontal, rear, and lateral views of the DMX³ 4000 fixed version circuit breaker, indicating dimensions and fixing points (labeled 'A').

5.4 Draw-out Version Diagrams

Diagrams showing frontal, lateral, and rear views of the DMX³ 4000 draw-out version circuit breaker, including dimensions for flat, horizontal, and vertical terminal configurations, and fixing points (labeled 'A').

6. Electrical Connections

These guidelines are for general selection. Actual installation must be verified based on specific switchgear shapes and conditions. Phase insulators or insulated bars are recommended if inter-pole air distance is less than 20 mm.

Minimum Cross Section of Copper Busbars per Pole (DMX³ and DMX³-I Fixed & Draw-out Versions)

Rated Current (A)Vertical Bars (mm)Horizontal Bars (mm)
6301 bar 40 x 10 or 2 bars 40 x 52 bars 40 x 5
8001 bar 50 x 10 or 2 bars 50 x 52 bars 50 x 5
10001 bar 50 x 10 or 2 bars 50 x 52 bars 60 x 5
12502 bars 60 x 52 bars 80 x 5
16002 bars 80 x 52 bars 50 x 10
20002 bars 50 x 102 bars 60 x 10
25003 bars 50 x 103 bars 60 x 10
32003 bars 100 x 104 bars 80 x 10
40004 bars 100 x 105 bars 100 x 10

Minimum Cross Section of Aluminium Busbars per Pole (DMX³ and DMX³-I Fixed & Draw-out Versions)

Rated Current (A)Vertical Bars (mm)Horizontal Bars (mm)
6302 bars 40 x 82 bars 40 x 8
8002 bars 50 x 82 bars 50 x 8
10002 bars 50 x 82 bars 50 x 10
12502 bars 50 x 102 bars 60 x 10
16002 bars 60 x 104 bars 50 x 8
20004 bars 50 x 84 bars 50 x 10
25004 bars 60 x 104 bars 80 x 10
32004 bars 150 x 105 bars 150 x 10
40005 bars 150 x 106 bars 150 x 10

7. Equipments and Accessories

7.1 Terminals

Rear terminals for fixed version (Flat connection pitch 130 mm)

Must be fixed onto horizontal rear terminals of the circuit breaker. Available for 3P (Cat.No 0 288 92) and 4P (Cat.No 0 288 93).

Diagram showing mounting examples for rear terminals for fixed version (flat connection).

Rear terminals for fixed version (Vertical connection pitch 130 mm)

Used to convert flat connection to vertical. Must be fixed onto Cat.Nos 0 288 92/93 according to pole count. Available for 3P (Cat.No 0 288 94) and 4P (Cat.No 0 288 95).

Diagram showing mounting examples for rear terminals for fixed version (vertical connection).

Rear terminals for draw-out version (Flat/vertical connection)

Must be fixed directly onto plate rear terminals of the circuit breaker. Available for 3P (Cat.No 0 288 94) and 4P (Cat.No 0 288 95).

Diagram showing mounting examples for rear terminals for draw-out version (flat/vertical connection).

7.2 Control Auxiliaries

Shunt Trip

Energizing trips the circuit breaker.

Voltage (V)Cat.No
24 ~/=0 288 48
48 ~/=0 288 49
110 to 130 ~/=0 288 50
220 to 250 ~/=0 288 51
415 to 480 ~/=0 288 52

Specifications: Rated operating voltage (Uc) ranges from 24-480V, voltage range (% Uc) 70-110, pick-up consumption 500/500 W/VA, pick-up time 180 ms, hold consumption 5/5 W/VA, min opening time 30 ms, insulation voltage 2.5 kV.

Undervoltage Releases

Trips the device when the coil is de-energised.

Voltage (V)Cat.No
24 ~/=0 288 55
48 ~/=0 288 56
110 to 130 ~/=0 288 57
220 to 250 ~/=0 288 58
415 to 440 ~/=0 288 59

Specifications: Rated operating voltage (Uc) ranges from 24-480V, voltage range (% Uc) 85-110, pick-up consumption 500/500 W/VA, pick-up time 180 ms, hold consumption 5/5 W/VA, min opening time 60 ms, insulation voltage 2.5 kV.

Modules for Delayed Tripping

Used with undervoltage releases.

Voltage (V)Cat.No
110 ~/=0 288 62
230 ~/=0 288 63

Specifications: Rated operating voltage (Uc) 110 or 230V, voltage range (% Uc) 85-110, pick-up consumption 16.5 (@110V)/34.5 (@230V) W/VA, time delay 1s (up to 3 modules), hold consumption 5 (@110V)/10 (@230V) W/VA, opening threshold 0.3-0.75xUn, closing threshold 0.85xUn, operating temperature -10 to +55 °C.

Closing Coils

Enable remote closing of the circuit breaker when the closing spring is charged.

Voltage (V)Cat.No
24 ~/=0 288 41
48 ~/=0 288 42
110 to 130 ~/=0 288 43
220 to 250 ~/=0 288 44
415 to 480 ~/=0 288 45

Specifications: Rated operating voltage (Uc) ranges from 24-480V, voltage range (% Uc) 85-110, pick-up consumption 500/500 W/VA, pick-up time 180 ms, hold consumption 5/5 W/VA, max closing time 30 ms, insulation voltage 2.5 kV.

Motor Operators

Connect to a release coil (UVR or trip on energising) and a closing coil.

Voltage (V)Cat.No
24 ~/=0 288 34
48 ~/=0 288 35
110 to 130 ~/=0 288 36
220 to 250 ~/=0 288 37
415 to 440 ~/=0 288 38
480 ~/=0 288 40

Specifications: Rated operating voltage (Uc) ranges from 24-480V, voltage range (% Uc) 85-110, max power consumption 180/180 W/VA (up to 65kA), 240/240 W/VA (100kA), max peak current 2-3xIn, charging time 5 (up to 65kA) / 7 (100kA) s, operating frequency 2 (up to 65kA) / 1 (100kA) n°/min.

7.3 Signalling Auxiliaries

Signalling contact for draw-out version (inserted/test/drawn-out)

Provides 3 changeover contacts per position.

Rated operating voltage (Uc)Cat.No 0 288 13
=250 V - 0.3 A
=125 V - 0.6 A
~250 V - 16 A
~125 V - 16 A

Contact "ready to close" with charged springs

Rated operating voltage (Uc)Cat.No 0 288 14
=250 V - 0.3 A
=125 V - 0.6 A
~250 V - 16 A
~125 V - 16 A

Additional Signalling Contact

Rated operating voltage (Uc)Cat.No 0 288 15
=250 V - 0.3 A
=125 V - 0.6 A
~250 V - 16 A
~125 V - 16 A

Signalling Contact for Auxiliaries (ST, CC and UVR)

Rated operating voltage (Uc)Cat.No 0 288 16
=250 V - 0.3 A
=125 V - 0.6 A
~250 V - 16 A
~125 V - 16 A

7.4 Locking

Universal Key Locks

Used with key locking support Cat.No 0 288 28 or 0 281 94.

Keylocks Supports

Door Locking

Prevents door opening when the circuit breaker is closed. Available for left-hand and right-hand side mounting (Cat.No 0 288 20).

Padlocks

7.5 Mechanical Operations Counter

Counts total operation cycles of the device (Cat.No 0 288 23).

7.6 Rating Mis-insertion Device

Prevents insertion of a draw-out circuit breaker into an incompatible base (Cat.No 0 288 25).

7.7 Lifting Plate

Available (Cat.No 0 288 79).

7.8 Fixing Devices

Specific instruction sheets are provided for integrating DMX³ / DMX³-I 4000 into XL³ enclosure ranges (fixing plates, metal faceplates, cable sleeves, etc.).

7.9 Equipment for Conversion of Fixed to Draw-out Device

Bases for Draw-out Device

Transformation Kit for Draw-out Version

7.10 Equipment for Interlocking

Mechanical interlock uses cables to interlock 2 or 3 devices (different types possible) in vertical or horizontal configuration. The interlock unit mounts on the right-hand side. Interlock cables must be ordered separately.

Interlock for DMX³ 4000: Cat.No 0 288 65.

7.11 Interlock Cables

Available in various lengths:

Diagram illustrating interlock cable connection choices and showing how to calculate cable length based on variables H and V.

7.12 Insulating Shields

8. Marking

Products are labeled in full conformity with standards and directives using laser or sticker labels. Labels include manufacturer, product denomination/type/code, standard conformity, declared characteristics, and Icu identification.

Example of a product laser label on the front, detailing manufacturer, product code, current ratings (In, Icw, Ics), voltages (Uimp, Ui), and standard compliance.

Example of a product laser label on the side, detailing manufacturer, product type, standard conformity, and directive requirements.

Example of a mark sticker label on the side, showing product code and country deviation.

Example of a packaging sticker label, detailing manufacturer, product type, and standard conformity.

9. Curves

9.1 Tripping Curve for DMX³ 4000 MPx.10 Protection Units: L-T Protection Detail

This graph illustrates the Long Time (L) and Thermal (T) protection curve, showing the relationship between tripping time (seconds) and current (I) relative to the rated current (Ir). It defines the time delay for overload conditions.

ValueDescription
ICurrent
IrLong time setting current
trLong time delay

9.2 Tripping Curve for DMX³ 4000 MPx.10 Protection Units: Short Time Trip Protection Detail

This graph details the Short Time (ST) trip protection, showing tripping time versus current for both independent time delay (t=k) and inverse time delay (I²t=k) characteristics. It covers settings for Isd and tsd.

ValueDescription
ICurrent
IsdShort time setting current
tsdShort time delay

9.3 Tripping Curve for DMX³ 4000 MPx.10 Protection Units: Instantaneous Trip Protection Detail

This graph illustrates the instantaneous trip protection (Ii) and its relationship with current (I). It shows the tripping time for very high short-circuit currents, with settings for Ii and Isf (fixed instantaneous override).

IcuValues for Isf
50 kA50 kA
65 kA65 kA
100 kA85 kA
ValueDescription
ICurrent
InRated current
tsdShort time delay
IiInstantaneous release
IcwRated short time withstand current

9.4 Ground Fault Curve for DMX³ 4000 MPx.10 Protection Units

This graph shows the ground fault (Ig) protection curve, illustrating tripping time versus current (I/Ig) for various settings of constant tripping time (tsd=k) and constant pass-through energy (I²tsd=k).

ValueDescription
ICurrent
InRated current
IgGround fault current
tsdShort time delay
tsd = kConstant tripping time setting
I²tsd = kConstant pass-through energy setting

9.5 Pass-through Specific Energy Curve (at 415 V)

This graph displays the specific energy (A²s) versus the short-circuit current (Icc) for different rated currents and protection settings (e.g., tsd=0.5, 0.2, 0.1).

10. Conformity

The DMX³ range complies with IEC/EN standards 60947-2 and 60947-3, with certifications available via IECEE CB-scheme or LOVAG Compliance scheme. Local certifications (CCC, EAC) are also available. The products conform to Lloyds Shipping Register, RINA, and Bureau Veritas Marine standards.

RoHS: Compliant with Directive 2011/65/EU (as amended by 2015/863/EU) on the restriction of hazardous substances.

REACH: Substances of Very High Concern (SVHC) are declared if present above 0.1% w/w, as per Regulation (1907/2006). No SVHCs listed in Annex XIV are currently found in this product.

WEEE: Sale includes contribution to environmental bodies for end-of-life product management.

PACKAGING: Compliant with European Directive 94/62/CE.

BATTERIES: Batteries and accumulators comply with European Regulation 2023/1542.

11. Other Information

Software Tools

Documentation

For further technical information, please contact Legrand technical support.

Unless otherwise indicated, data refers to test conditions according to product standards. For different use conditions, refer to regulatory requirements, local regulations, and system design specifications.

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