Legrand DPX³ 250 Thermal Magnetic Circuit Breakers with Earth Leakage
DPX³-I 250 Trip-Free Switches with Earth Leakage
1. Use
The DPX³ range offers a comprehensive solution for protection devices in installations, providing a precise approach for various project needs. It is designed for the premium market segment, offering a range suitable for medium power applications at competitive costs.
2. Range
2.1 DPX³ 250 Thermal Magnetic Circuit Breaker with Earth Leakage
| Icu | 25 kA | 36 kA | 50 kA |
| In (A) | 4P | ||
| 100 | 4 202 25 | 4 202 55 | 4 202 85 |
| 160 | 4 202 27 | 4 202 57 | 4 202 87 |
| 200 | 4 202 28 | 4 202 58 | 4 202 88 |
| 250 | 4 202 29 | 4 202 59 | 4 202 89 |
2.2 DPX³-I 250 Trip-Free Switch with Earth Leakage
| In (A) | 4P |
| 250 | 4 202 98 |
2.3 Composition
DPX³ 250 thermal magnetic circuit breakers are supplied with: fixing screws, connection plates for bars or cable lugs, and insulating shields (phase barrier).
3. Technical Characteristics
3.1 Electrical Characteristics
DPX³ 250 Thermal Magnetic Circuit Breakers with Earth Leakage
| Breaking capacity (kA) and Ics | |||||
| 25 kA | 36 kA | 50 kA | |||
| Ue | 220/240 V~ | 40 | 60 | 80 | |
| Rated current | 380/415 V~ | 25 | 36 | 50 | |
| Poles | 440/460 V~ | 20 | 30 | 40 | |
| Pole pitch | 480/500 V~ | 8 | 16 | 18 | |
| Rated insulation voltage (50/60Hz) Ui | Ics (% Icu) | 100 | 100 | 100 | |
| Rated operating voltage (50/60Hz) Ue | Rated making capacity under short circuit Icm | ||||
| Rated impulse withstand current Uimp | Icm (kA) at 415 V | 52.5 | 75.6 | 105 | |
| Rated frequency | Rated current (In) at 40 °C/50 °C | ||||
| Reference ambient temperature | Phases limit trip current | ||||
| Operating temperature | Thermal (Ir) | Magnetic (li) | |||
| Electrical endurance at In (cycles) | In (A) | L1-L2-L3 | N | L1-L2-L3 | N |
| Electrical endurance at 0.5 x In (cycles) | 100 | 100 | 1000 | ||
| Utilization category | 160 | 160 | 1600 | ||
| Suitable for isolation | 200 | 200 | 2000 | ||
| Type of protection | 250 | 250 | 2500 | ||
| Thermal adjustment Ir | (0.8 ÷ 1) x In | ||||
| Magnetic adjustment li (A) | 5 ÷ 10 x In | ||||
| Neutral protection for 4P (%lth of phase pole) | 100 A | ||||
| Earth leakage type | A - Integrated | ||||
| Adjustable sensitivity | 0.03 A - 0.3 A - 1 A - 3 A | ||||
| Adjustable tripping | 0s - 0.3s - 1s - 3s (for 0.03 A: 0s only) | ||||
| Reverse feed | Yes | ||||
DPX³-I 250 Trip-Free Switches with Earth Leakage
| Uninterrupted nominal current Ie | 250 A |
| Short-time resistive current Icw for 1s | 3 kA |
| Rated short-circuit making capacity Icm | 4.5 kA |
| Rated insulation voltage Ui | 500 V~ |
| Maximum rated operating voltage Ue | 500 V~ |
| Rated impulse withstand voltage Uimp | 6 kV |
| Utilisation category | AC22-23A |
| Suitable for isolation | Yes |
| Rated frequency (Hz) | 50 Hz - 60 Hz |
| Operating temperature | -25 °C to 70 °C |
| Electrical endurance at In (cycles) | 8000 |
| Electrical endurance at 0.5 x In (cycles) | 10000 |
| Earth leakage type | Integrated |
| Adjustable sensitivity | 0.03 A - 0.3 A - 1 A - 3 A |
| Adjustable tripping | 0s - 0.3s - 1s - 3s (for 0.03 A: 0s only) |
| Reverse feed | Yes |
3.2 Navigation
Illustrates the process of setting the earth leakage protection parameters (IΔn and Δt).
Setup mode:
- Setting IΔn: 0.03 A, 0.3 A, 1 A, 3 A
- Setting Δt: 0s, 0.3s, 1s, 3s
Attention: After 5 seconds of permanence on the display of the new protection value (IΔn or Δt), it is automatically set.
The diagram shows the relationship between the set IΔn value, the set Δt value, the measured value present, and the history of interventions for differential tripping.
3.3 Mechanical Characteristics
Mechanical endurance (cycles): 20000
Mechanical endurance with motor control (cycles): 20000
| Load operations | Force on handle (N) |
| Opening operation | 45 |
| Closing operation | 78 |
| Restore operation | 75 |
3.4 Electrodynamic Forces
This section provides recommended distances to maintain between the breaker and the first fixing point of the conductor and bars to mitigate the effects of electrodynamic stresses during a short circuit. The installation of the anchorage system should utilize isolators suitable for the conductor type and operating voltage.
| Icc (kA) | Maximum distance (mm) | ||
| 25 | 36 | 50 | |
| 400 | 350 | 300 | |
| 250 | |||
| 500 | |||
The installer should calibrate these distances based on the conductor type and bar system, and also consider the weight of the conductors to ensure proper electrical junction.
3.5 Power Losses per Pole Under In (W)
Circuit Breakers
| In (A) | 100 | 160 | 200 | 250 |
| Lugs | 7.7 | 13.7 | 16.6 | 20.4 |
| Cage terminals | 7.9 | 14.4 | 17.7 | 22.2 |
| High capacity cage terminals | 8.0 | 14.5 | 17.9 | 22.5 |
| Spreaders | 8.0 | 14.5 | 17.9 | 22.5 |
| Rear terminals* | 8.0 | 14.5 | 17.9 | 22.5 |
| Plug-in version* | 11.0 | 22.1 | 29.8 | 41.1 |
* Products available only for maintenance of existing installations. For further information, please contact Legrand. If you need to integrate these accessories into a new installation, please refer to the DPX³ HP range.
Trip-Free Switches
| In (A) | 250 |
| Lugs | 14.3 |
| Cage terminals | 15.6 |
| High capacity cage terminals | 15.8 |
| Spreaders | 15.8 |
| Rear terminals* | 15.8 |
| Plug-in version* | 34.0 |
* Products available only for maintenance of existing installations. For further information, please contact Legrand. If you need to integrate these accessories into a new installation, please refer to the DPX³ HP range.
4. Installation Rules
According to IEC/EN 60947-1.
Temperature Deratings
Rated current and its adjustment must be considered in relation to ambient temperature variations and installation conditions. The table below indicates the maximum long-time (LT) protection setting depending on the ambient temperature.
| In (A) | Temperature Ta (°C) | |||||||||||
| -25 | -20 | -10 | -5 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | |
| 100 | 135 | 132 | 128 | 126 | 123 | 120 | 112 | 102 | 100 | 100 | 90 | 84 |
| 160 | 216 | 211 | 205 | 201 | 197 | 192 | 179 | 163 | 160 | 160 | 143 | 134 |
| 200 | 270 | 264 | 256 | 251 | 246 | 240 | 224 | 203 | 200 | 200 | 179 | 168 |
| 250 | 338 | 330 | 320 | 314 | 308 | 300 | 280 | 254 | 250 | 250 | 224 | 210 |
For derating temperature with other configurations, see table below.
| Ambient temperature | 30 °C | 40 °C | 50 °C | 60 °C | 70 °C | ||||||||||||||||||||
| Imax (A) | Ir/In | Imax (A) | Ir/In | Imax (A) | Ir/In | Imax (A) | Ir/In | Imax (A) | Ir/In | ||||||||||||||||
| Fixed version - vertical installation | |||||||||||||||||||||||||
| Cage terminals, flexible/rigid cable | 250 | 1 | 250 | 1 | 238 | 0.95 | 188 | 0.75 | 150 | 0.60 | |||||||||||||||
| Cage terminals, flexible/rigid cable + sealable terminal shields | 250 | 1 | 250 | 1 | 238 | 0.95 | 188 | 0.75 | 150 | 0.60 | |||||||||||||||
| Lugs, flexible/rigid cable | 250 | 1 | 250 | 1 | 238 | 0.95 | 188 | 0.75 | 150 | 0.60 | |||||||||||||||
| Lugs, flexible cable + sealable terminal shields | 250 | 1 | 250 | 1 | 238 | 0.95 | 188 | 0.75 | 150 | 0.60 | |||||||||||||||
| Spreaders, flexible/rigid cable | 250 | 1 | 250 | 1 | 238 | 0.95 | 175 | 0.70 | 138 | 0.55 | |||||||||||||||
| Rear flat staggered terminal*, flexible/rigid cable + sealable terminal shields | 250 | 1 | 250 | 1 | 238 | 0.95 | 175 | 0.7 | 1.38 | 0.55 | |||||||||||||||
* Products available only for maintenance of existing installations. For further information, please contact Legrand. If you need to integrate these accessories into a new installation, please refer to the DPX³ HP range.
Climatic conditions: according to IEC/EN 60947-1 Annex Q, Cat. F subject to temperature, humidity, vibration, shock and salt mist.
Electromagnetic disturbances (EMC): for DPX³ 250 circuit breakers, according to IEC/EN 60947-2 Annex B.
Pollution degree: for DPX³ 250 circuit breakers, degree 3, according to IEC/EN 60947-2.
Altitude Derating for DPX³ and DPX³-I
| Altitude (m) | 2000 | 3000 | 4000 | 5000 |
| Ue (V) | 500 | 430 | 380 | 330 |
| In (A) (Ta = 40 °C / 50 °C) | 1 x In | 0.98 x In | 0.93 x In | 0.9 x In |
5. Dimensions and Weight
5.1 Dimensions (mm)
4P (W x H x D): 140 x 195 x 100
Implantation
Diagram showing implantation details for 4P devices.
Fixed version - Device without accessories
Diagram showing dimensions of the fixed version.
| A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | H (mm) | I (mm) | J (mm) | K (mm) | |
| 4P | 140 | 195 | 82.5 | 45 | 61.5 | 153 | 35 | 28.5 | 18 | 74 | 97 |
With front terminal
Diagram showing dimensions with front terminal.
| A (mm) | B (mm) | C (mm) | D (mm) | |
| With front terminal | 33 | 48.5 | 54.75 | 13 |
With direct rotary handle
Diagram showing dimensions with direct rotary handle.
| A (mm) | L (mm) | H min. (mm) | H max. (mm) | I (mm) | |
| With direct rotary handle | 122 | 74 | 132 | 361 | 62 |
With vary depth rotary handle
Diagram showing dimensions with vary depth rotary handle.
With spreaders
Diagram showing dimensions with spreaders.
| A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | |
| With spreaders | 140 | 30 | 27 | 63.5 | 13 | 50 |
With motor operator
Diagram showing dimensions with motor operator.
5.2 Weight
| Configuration | 4P |
| Circuit breaker/trip-free switch | 2.67 |
| Direct rotary handle* | 0.35 |
| Vari depth rotary handle* | 0.27 |
| Motor operator* | 1.22 |
| Interlock* | 1.08 |
| Spreader* | 0.35 |
* to add to device weight
6. Connections
Possible way of assembly on DIN rail: vertical, supply invertor type.
To ensure the circuit breaker's connection, the following can be used: busbars, cables lugs, cables, cage terminals.
| Cage terminals capacity | |
| Bars | 28.5 mm wide max. |
| Flexible cables | 1.5 mm² min. / 120 mm² max. |
| Rigid cables | 1.5 mm² min. / 150 mm² max. |
For detailed mounting procedures, see instruction sheet.
7. Equipments and Accessories
7.1 Releases
Three types of releases are available for DPX³ 125/160/250 HP and DPX³ 160/250:
- Shunt releases (ST): Available for various AC voltages (12V~ to 480V~) with a maximum power of 400 VA/W.
- Undervoltage releases (UVR): Available for various AC voltages (12V~ to 480V~) with a maximum power of 4 VA. Circuit breaker opening time is less than 50 ms.
- Time-lag undervoltage releases (800 ms): Available for 230V~ and 400V~, to be equipped with a time-lag module.
7.2 Auxiliary Contacts
Used to indicate the status of the contacts or the opening of the DPX³ on a fault.
- Standard auxiliary contact (OC) / Fault signal (CTR): Available for various DC and AC voltages (24V to 250V) with corresponding intensity ratings.
Configurations: OC, CTR, OC/CTR.
Diagram illustrating auxiliary contact configurations.
7.3 Rotary Handles
Various types of suited rotary handles are available, also compatible with DPX³ 160.
- Direct on DPX³ (with auxiliary option and compatible with XL³): Standard (black) and Emergency use (red/yellow) versions.
- Vary depth handle IP55 (with auxiliary option and compatible with XL³): Standard (black) and Emergency use (red/yellow) versions.
- Locking accessories for rotary handle with auxiliary option: Key barrels and flat/star keys.
- Direct on DPX³ (general purpose): Standard (black) and Emergency use (red/yellow) versions.
- Vary depth handle IP55 (general purpose): Standard (black) and Emergency use (red/yellow) versions.
- Locking accessories (for general purpose rotary handle): Key barrels and flat keys.
7.4 Motor Operators
Side and Front motor operators are available for 24 - 230 V~/=.
* Products available only for maintenance of existing installations. For further information, please contact Legrand. If you need to integrate these accessories into a new installation, please refer to the DPX³ HP range.
Locking accessories for side motor operator: Key barrel and flat/star keys, Padlock.
Locking accessories for front motor operator: Ronis type flat key, Profalux type flat key, Padlock selector.
7.5 Mechanical Accessories
- Padlocks (for locking in "open" position): DPX³ padlock accessory for handle.
- Insulated shields (phase barriers): Set of 36 for 4P.
- Sealable terminal shields: For front spreaders 4P.
- Fixing plates in XL³ for transfer switches: Plates for mounting and interlocking 2 DPX³ (160/250 HP and DPX³ 160/250). Available for fixed and plug-in versions.
- Fixing plates in XL³: For fixing DPX³ 250 on DIN rail or on plate. Available for DPX³ 250 4P with earth leakage and DPX³ 250 4P with side mounting motor operator.
7.6 Connection Accessories
- Front spreaders: Set of 4 (for 4P), also compatible with DPX³ 250 HP.
- Cage terminals: Set of 4 standard terminals for 1x150 mm² max (rigid) or 1x120 mm² max (flexible) Cu/Al bar/cable lug (for Al cables In max 125 A). Screw terminals for bar connections (4P).
8. Marking
Product labeling includes manufacturer information, product denomination, type, code, standard conformity, and characteristics. Laser labels are on the front, while sticker labels are on the side and packaging.
Product laser label on front: Manufacturer responsible, Denomination, type product, code, Standard conformity, Standard characteristics declared, Colored identification of Icu at 415 V.
Product sticker label on side: Manufacturer responsible, Denomination and type product, Mark/Licence (if any), Directive requirements, Bar code identification product, Manufacturing Country.
Packaging sticker label: Manufacturer responsible, Denomination and type product, Mark/Licence (if any), Directive requirements, Bar code identification product.
9. Curves
9.1 Thermal Magnetic Tripping Curve
Graph showing tripping curves for thermal magnetic protection. It includes parameters like time (t), current (I), rated current (In), long time setting current (Ir), and characteristics for cold and hot starts.
| Value | t | Description |
| In | Rated current | |
| Ir | Long time setting current | |
| Curve 1 | Characteristic with cold start | |
| Curve 2 | Characteristic with hot start |
9.2 Pass-through Specific Energy Characteristic Curve
Graph illustrating the pass-through specific energy characteristic curve for different current levels (Icc) and product types.
| Value | Icc | Description |
| I²t (A²s) | Pass-through specific energy |
9.3 Cut-off Peak Current Characteristic Curve (kA)
Graph showing the cut-off peak current characteristic curve for different current levels (Icc) and product types.
| Value | Icc | Ip | Description |
| Estimated short circuit symmetrical current (RMS value) | Maximum short circuit peak current |
9.4 Earth Leakage Curve, Instantaneous
Graph showing the instantaneous earth leakage tripping curve.
9.5 Earth Leakage Curve, Time Delay = 0.3 s
Graph showing the earth leakage tripping curve with a time delay of 0.3 seconds.
9.6 Earth Leakage Curve, Time Delay = 1s
Graph showing the earth leakage tripping curve with a time delay of 1 second.
9.7 Earth Leakage Curve, Time Delay = 3 s
Graph showing the earth leakage tripping curve with a time delay of 3 seconds.
10. Standards and Regulations
DPX³ range of products complies with IEC/EN standards 60947-2 and 60947-3. Certification is available through IECEE CB-scheme or LOVAG Compliance scheme.
RoHS: Compliance with Directive 2011/65/EU (RoHS), as modified by 2015/863/EU, restricts hazardous substances in electrical and electronic equipment.
REACH: Substances of Very High Concern (SVHC) are declared in the European SCIP database if present above 0.1% weight by weight. As of the publication date, no substances from Annex XIV are found in this product.
WEEE: The sale of this product includes a contribution to environmental bodies for the handling of Electrical and Electronic Equipment Waste.
Batteries: Batteries included comply with European Regulation 2023/1542.
Packaging: Design and manufacture of packaging comply with European Directive 94/62/CE.
For further technical information, please contact Legrand support.
Unless otherwise indicated, data in this document refers to test conditions according to product standards. For different usage conditions, refer to regulatory requirements and system design specifications.
11. Other Information
- XLPro Calcul: Software for creating calculation notes, defining electrical characteristics of low voltage installations.
- XLPro³ Tool Selectivity and backup/Legrand Selectivity and backup: Software for defining selectivity and backup values, and obtaining tripping curves.
- XLPro Panels: Software for designing electrical distribution panels, producing diagrams, and costing projects.
For further technical information, please contact Legrand support.
Resources:
- Workshop book: Available on e-catalog for mounting information, equipment, accessories, and spare parts.
- Instruction sheet: Available on e-catalog for detailed mounting procedures.
- PEP: Available on e-catalog.
