Legrand DPX³ 250 Thermal-Magnetic Circuit Breakers
DPX³-I 250 Trip-Free Circuit Breakers
1. Usage
The DPX³ range offers a new solution for precise electrical installation protection, designed to meet the needs of various projects. It provides a comprehensive approach for the premium market segment with a fully adapted range for high-power applications, featuring competitively priced circuit breakers.
2. Range
2.1 DPX³ 250 Thermal-Magnetic Circuit Breakers
| Icu | In (A) | 25 kA | 36 kA | 50 kA | ||
|---|---|---|---|---|---|---|
| 3P | 4P | 3P | 4P | 3P | 4P | |
| 100 | 4 202 05 | 4 202 15 | 4 202 35 | 4 202 45 | 4 202 65 | 4 202 75 |
| 160 | 4 202 07 | 4 202 17 | 4 202 37 | 4 202 47 | 4 202 67 | 4 202 77 |
| 200 | 4 202 08 | 4 202 18 | 4 202 38 | 4 202 48 | 4 202 68 | 4 202 78 |
| 250 | 4 202 09 | 4 202 19 | 4 202 39 | 4 202 49 | 4 202 69 | 4 202 79 |
2.2 DPX³-I 250 Trip-Free Circuit Breakers
| In (A) | 3P | 4P |
|---|---|---|
| 250 | 4 202 99 | 4 203 00 |
2.3 Composition
The DPX³ 250 thermal-magnetic circuit breaker is supplied with:
- Fixing screws
- Connection terminals for busbars or lugs
- Separation partitions
Diagram showing the components of the circuit breaker: fixing screws, connection terminals, adjustment knob, trip release button, and auxiliary component slot.
3. Technical Characteristics
3.1 Electrical Characteristics
DPX³ 250 Thermal-Magnetic Circuit Breakers
| Characteristic | Value |
|---|---|
| Nominal Current | 100 A, 160 A, 200 A, 250 A |
| Poles | 3P - 4P |
| Pole spacing | 35 mm |
| Nominal Insulation Voltage (Ui) (50/60Hz) | 800 V |
| Nominal Operating Voltage (Ue) (50/60Hz) | 690 V |
| Nominal Impulse Withstand Voltage (Uimp) | 8 kV |
| Nominal Frequency | 50 Hz - 60 Hz |
| Ambient Reference Temperature | 40 °C - 50 °C |
| Operating Temperature | -25 °C to 70 °C |
| Electrical Endurance at In (cycles) | 8,000 |
| Electrical Endurance at 0.5 x In (cycles) | 10,000 |
| Category of Use | A |
| Suitable for Isolation | Yes |
| Thermal-Magnetic Adjustment | Yes |
| Thermal Adjustment (Ir) | 0.8 to 1 x In |
| Magnetic Adjustment (Ii) | 5 to 10 x In |
| Neutral Protection (for 4P models) (% of phase pole) | 100 |
| Reverse Polarity Supply | Yes |
DPX³-I 250 Trip-Free Circuit Breakers
| Characteristic | Value |
|---|---|
| Uninterrupted Nominal Current | 250 A |
| Short-time withstand current Icw for 1s | 3 kA |
| Nominal short-circuit breaking capacity Icm | 4.5 kA |
| Nominal Insulation Voltage Ui | 800 V~ |
| Nominal Operating Voltage Ue | 690 V~/ |
| Nominal Impulse Withstand Voltage Uimp | 8 kV |
| Category of Use | AC22-23A |
| Suitable for Isolation | Yes |
| Nominal Frequency | 50 Hz - 60 Hz |
| Operating Temperature | -25 °C to 70 °C |
| Mechanical Endurance (cycles) | 20,000 |
| Mechanical Endurance with Motorized Actuator (cycles) | 20,000 |
3.2 Mechanical Characteristics
| Action | Force Required (N) |
|---|---|
| Opening Force | 45 |
| Closing Force | 78 |
| Resetting Force | 75 |
3.3 Electrodynamic Forces
The table below provides an indication of the maximum distances between the first fixing point of the circuit breaker and the busbars to reduce the effects of electrodynamic stresses that can be created during a short circuit. For the realization of the supply system, it is recommended to use insulators adapted to the type of conductor used and the operating voltage.
| Icc (kA) | Maximum Distance (mm) |
|---|---|
| 25 | 400 |
| 36 | 350 |
| 50 | 300 |
According to the type of conductor and busbar arrangement (excluding Legrand busbar kits), the distance to be maintained should be calibrated by the installer. The installer must also consider the weight of the conductors to avoid affecting the electrical connection between the conductor itself and the connection point.
3.4 Power Dissipation per Pole under In (W)
| Nominal Current (In) (A) | Cosses | Cage Terminals | Cage Terminals (Large Capacity) | Spacers | Rear Terminals* | Versions (Extractable)* |
|---|---|---|---|---|---|---|
| 100 | 7.0 | 7.3 | 7.3 | 7.3 | 7.3 | 10.3 |
| 160 | 12.5 | 13.2 | 13.3 | 13.3 | 13.3 | 20.9 |
| 200 | 15.1 | 16.2 | 16.3 | 16.3 | 16.3 | 28.3 |
| 250 | 19.1 | 20.7 | 21.0 | 21.0 | 21.0 | 39.7 |
Note: The dissipated power values in the table above are referenced and measured as described in standard IEC 60947-2 (Annex G) for circuit breakers. The table values refer to a single pole.
* Accessories not compatible with XL³ HP cabinets; refer to the corresponding DPX³ HP solutions.
4. Installation Guidelines
According to IEC/EN 60947-1.
Temperature Derating
The nominal current and its adjustment must be considered based on the ambient temperature and different installation conditions. The table below indicates the maximum setting for long-time (LT) protection as a function of the ambient temperature.
| Ambient Temperature (°C) | -25 | -20 | -10 | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| In (A) | 100 | 125 | 132 | 140 | 129 | 122 | 120 | 112 | 102 | 100 | 95 | 84 |
| 160 | 210 | 210 | 205 | 195 | 185 | 175 | 165 | 155 | 145 | 140 | 135 | 128 |
| 200 | 263 | 250 | 250 | 240 | 235 | 230 | 225 | 220 | 210 | 200 | 190 | 178 |
| 250 | 350 | 335 | 320 | 314 | 308 | 300 | 280 | 250 | 234 | 224 | 210 |
For derating at temperatures with other configurations, see the 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 cable | 263 | 1.05 | 250 | 1 | 250 | 1 | 225 | 0.90 | 213 | 0.85 |
| Cosses, flexible cable | ||||||||||
| Cosses, flexible cable + plombable cable glands | 250 | 1 | 250 | 1 | 250 | 1 | 238 | 0.95 | 225 | 0.90 |
| Flat rear terminals*, flexible cable + plombable cable glands | ||||||||||
| Fixed Version - Horizontal Installation | ||||||||||
| Cage terminals, flexible cable | 263 | 1.05 | 250 | 1 | 250 | 1 | 225 | 0.90 | 213 | 0.85 |
| Cosses, flexible cable | ||||||||||
| Cosses, flexible cable + plombable cable glands | 250 | 1 | 250 | 1 | 250 | 1 | 238 | 0.95 | 225 | 0.90 |
| Flat rear terminals*, flexible cable + plombable cable glands | ||||||||||
* Accessories not compatible with XL³ HP cabinets; refer to the corresponding DPX³ HP solutions.
5. Dimensions and Weight
5.1 Dimensions (mm)
3P (L x H x D): 105 x 165 x 100
4P (L x H x D): 140 x 165 x 100
Diagrams showing the dimensions of 3P and 4P circuit breakers with different mounting configurations (fixed, front access, motorized, rotary).
| Configuration | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | G (mm) | H (mm) |
|---|---|---|---|---|---|---|---|---|
| 3P | 105 | 165 | 82.5 | 45 | 61.5 | 123 | 35 | 70 |
| 4P | 140 | 165 | 82.5 | 45 | 61.5 | 123 | 35 | 70 |
| A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | F (mm) | |
|---|---|---|---|---|---|---|
| 3P | 105 | 165 | 82.5 | 340 | 165 | 160 |
| 4P | 140 | 165 | 82.5 | 340 | 165 | 160 |
| G (mm) | H (mm) | I (mm) | J (mm) | K (mm) | |
|---|---|---|---|---|---|
| 3P | 35 | 28.5 | 18 | 74 | 97 |
| 4P | 35 | 28.5 | 18 | 74 | 97 |
5.2 Weight
| Configuration | Weight (kg) | |
|---|---|---|
| 3P | 4P | |
| Circuit breaker/trip-free circuit breaker | 1.9 | 2.4 |
| Direct rotary control* | 0.30 | |
| Remote rotary control* | 0.27 | |
| Motorized control* | 1.22 | |
| Interlocking* | 1.08 | |
| Spacers* | 0.26 | 0.35 |
* Add to the weight of the device.
6. Connection
DIN rail mounting possible:
- Vertically
- Horizontally
To ensure circuit breaker connection, it is possible to use:
- Busbars
- Lugs
- Connection extenders
- Cage terminals
Cage Terminal Connections
| Connection Type | Recommended Cable Section (mm²) |
|---|---|
| Busbars | 28.5 mm max. |
| Flexible Cables | 1.5 mm² min. / 120 mm² max. |
| Rigid Cables | 1.5 mm² min. / 150 mm² max. |
For detailed installation procedures, consult the instructions.
Diagrams illustrating connection methods for DC current for circuit breakers and switch-disconnectors.
Diagrams showing connection methods for DC current for switch-disconnectors (polarity can be reversed).
Diagram showing connection to DC current networks for circuit breakers/switch-disconnectors isolated from earth.
7. Equipment and Accessories
7.1 Trip Units
There are 3 types of trip units (adapted for DPX3 125/160/250 HP and DPX3 160/250):
- Current Emission Trip Units: Available for various voltages (12V~ to 380-480V~).
- Voltage Minimum Trip Units: Available for various voltages (12V~ to 380-415V~).
- Delayed Voltage Minimum Trip Units (800 ms): For equipping with a time delay module (230V~, 400V~).
7.2 Auxiliary Contacts
Allows visualization of the status of contacts or opening of DPX³ on a fault.
| Auxiliary Contact Type (OC)/Fault Signal (CTR) | Nominal Voltage (Un) | Current (A) |
|---|---|---|
| Standard (black) | 24 V | 5 |
| 48 V | 1.7 | |
| 110 V | 0.5 | |
| 230 V~ | 0.25 | |
| 110V~ | 4 | |
| 230/250 V~ | 3 |
Includes reference numbers for connector kits for auxiliary contacts.
7.3 Rotary Control
There are 4 types of rotary control (also compatible with DPX³ 160):
- Direct on DPX³ (with auxiliary option and compatible with XL³)
- Remote IP55 (with auxiliary option and compatible with XL³)
Includes reference numbers for various locking accessories for rotary controls (direct and remote).
7.4 Motorized Control
Lateral motorized control 24 - 230 V~
Includes reference numbers for locking accessories for lateral motorized control.
7.5 Mechanical Accessories
- Padlocks (for locking in the 'OPEN' position)
7.6 Connection Accessories
- Spacers: Lot of 3 (for 3P), Lot of 4 (for 4P)
- Cage Terminals: Lot of 3 standard cage terminals for busbars/cables (Cu/Al) up to 1 x 150 mm² max. (rigid) or 1 x 120 mm² (flexible) (for Al cables with In max. 125 A). Lot of 4 standard cage terminals.
- Screw Terminals for Lugs: Lot of 3 (for 3P), Lot of 4 (for 3P)
7.7 Terminal Box Specifications
| Cable Section (mm²) | Cu | Al | ||
|---|---|---|---|---|
| Nominal Current (A) | Rigid | Flexible | Rigid | Flexible |
| 16 | 2.5 | 4 | ||
| 20 | 2.5 | 4 | ||
| 25 | 4 | 6 | ||
| 32 | 6 | 10 | ||
| 40 | 10 | 16 | ||
| 50 | 10 | 16 | ||
| 63 | 16 | 25 | ||
| 80 | 25 | 35 | ||
| 100 | 35 | 50 | ||
| 125 | 50 | 70 | ||
| 160 | 70 | - | ||
| 200 | 95 | - | ||
| 250 | 120 | - |
* Recommended sections comply with IEC 60947-1 (ed.6 2020/04) and IEC60947-2 (ed.5.1 2019/07).
Note: When the section exceeds the maximum specified value for the material, the admissible current is limited to the indicated value.
| Dimension Limits for Cage Terminals | Notes | |||
|---|---|---|---|---|
| Section min. (mm²) | Section max. (mm²) | |||
| Souple | Rigide | Souple | Rigide | |
| 2.5 | 4 | 120 | 150 |
8. Marking
The products (circuit breakers and trip-free circuit breakers) are supplied with labeling that fully complies with the standards and directives mentioned, using laser or self-adhesive labels (for illustration purposes only):
- Product Label (front face): Manufacturer, Product name and type, Brand/license (if applicable), Compliance with standards, Directive requirements, Product barcode identification, Country of manufacture.
- Self-adhesive Product Label (side): Product name and type, Manufacturer, Brand/license (if applicable), Directive requirements, Product barcode identification.
- Brand Self-adhesive Label (side): Product code, Brand/License (if applicable), Country-specific details (if applicable).
Diagrams showing the different labels applied to the product and its packaging.
9. Curves
9.1 Thermal-Magnetic Trip Curve
Graph showing the time-current trip curve for the DPX³ 250 circuit breaker.
| Value | Description |
|---|---|
| t | Time |
| In | Nominal Current |
| Ir | Long-time setting current |
| Curve 1 | Cold start characteristic |
| Curve 2 | Hot start characteristic |
9.2 Energy Limitation Characteristic Curve
Graph showing the energy limitation characteristic curve for the DPX³ 250 circuit breaker.
| Value | Description |
|---|---|
| Icc | Short-circuit current |
| I²t (A²s) | Limited energy |
9.3 Peak Current Limitation Characteristic Curve
Graph showing the peak current limitation characteristic curve for the DPX³ 250 circuit breaker.
| Value | Description |
|---|---|
| Icc | Symmetrical short-circuit current estimate (RMS value) |
| Ip | Peak short-circuit current |
10. Standards and Regulations
The DPX³ range of circuit breakers and trip-free circuit breakers complies with standards IEC/EN 60947-2 and 60947-3. Certification is available according to the IECEE CB scheme or the LOVAG conformity scheme.
The DPX³ range complies with European directives:
- RoHS: Compliance with Directive 2011/65/EU (RoHS), as amended by delegated Directive 2015/863, on the restriction of the use of certain hazardous substances in electrical and electronic equipment.
- REACH: If substances identified as SVHC (Substances of Very High Concern) according to REACH regulation (1907/2026) are present in the products with a concentration greater than 0.1% by mass, they are declared within the European SCIP database. As of the date of publication of this document, none of the substances listed in Annex XIV are present in this product.
- WEEE: WEEE Directive (2012/19/EU): the sale of this product includes a contribution to the designated environmental organizations of each European country responsible for the end-of-life management of products covered by the EU Directive on Waste Electrical and Electronic Equipment.
- Packaging: Packaging designed and produced in accordance with Decree 98-638 of 20/07/98 and Directive 94/62/CE.
For specific information, please contact Legrand support.
For more technical information, contact Legrand technical support.
Unless otherwise indicated, the data reported in this document refers exclusively to the test conditions according to product standards. For different usage conditions of the product, within an electrical equipment or any other installation context, refer to the equipment's regulatory requirements, local regulations, and system design specifications.
11. Other Information
- XLPro Calcul: Calculation note creation software for installers, design offices, and maintenance operators. Defines the electrical characteristics of a low-voltage installation in compliance with applicable standards.
- XLPro³ Tool Selectivity and Discrimination / Legrand Selectivity and Discrimination: Software dedicated to installers, panel builders, and design offices. Defines selectivity and backup values for an association of electrical devices and obtains the trip curves of selected products.
- XLPro Panels: Distribution panel design software for panel builders and electrical panel designers. Designs electrical distribution for the panel, produces electrical diagrams, lists selected products, and calculates the overall project cost.
- Workshop Manual: Mounting tips and advice, equipment, accessories, and spare parts, available in the online catalog.
- Instructions: Detailed mounting information, available in the online catalog.
- PEP Sheet: Available in the online catalog.
Information icon: For more information, visit www.legrand.com
