What to do if LEGRAND DMX3 2500 Circuit breakers racking shutter does not re-close automatically?
If the LEGRAND Circuit breakers racking shutter doesn't re-close automatically after the racking handle is pulled out, it might be because the breaker is in-between the Service/Test/Isolated position. Ensure the position indicator is aligned with one of the distinct positions by racking the breaker in or out.
What to do if LEGRAND DMX3 2500 ACB trips after closing?
If the LEGRAND Circuit breakers ACB trips after closing, and it happens after a few seconds or minutes, it indicates an overload fault. You should check the unit protection, identify the fault, and then clear the cause. If the tripping occurs within a second, it suggests other faults are present. Also, verify the source of the command to ensure the shunt release isn't continuously receiving a command.
How to fix LEGRAND DMX3 2500 Circuit breakers ACB that does not close on pressing “ON” button?
If the LEGRAND Circuit breakers ACB doesn't close when you press the “ON” button, consider these potential causes: * The selector for dielectric test might be in the “dielectric test position”—set it to the “normal use” position. * The U/V release may be present but not energized—energize the U/V release. * The mechanism spring might not be charged—manually charge it until you hear a distinct sound and the indicator turns yellow. * The reset button could be ejected—press the reset button. * The racking shutter might be open—close the racking shutter. * A mechanical interlock might be disabling closing—re-check before attempting to close the breaker.
What to do if LEGRAND DMX3 2500 ACB does not close electrically?
If the LEGRAND Circuit breakers ACB does not close electrically, it might be because the electrical antipumping is active. To resolve this, interrupt the ‘OPEN’ command once. Another reason could be that the “Ready to close”(RTC) conditions are not met, so you should check all RTC conditions.
Why LEGRAND DMX3 2500 Circuit breakers ACB cannot be pushed in to isolated position?
The LEGRAND Circuit breakers ACB might not push into the isolated position if the breaker and miss insertion device ratings do not match. Ensure you are using the correct breaker.
Overview of general technical features and ratings according to IEC 60947-2.
Termination details for DMX3 2500, 3 poles.
Termination details for DMX3 4000, 3 poles.
Termination details for DMX3 6300, 3 poles.
Termination details for DMX3 2500, 4 poles.
Termination details for DMX3 4000, 4 poles.
Termination details for DMX3 6300, 4 poles.
Draw-out termination for DMX3 2500, 3 poles.
Details for horizontal terminal connections.
Details for vertical terminal connections.
Draw-out termination for DMX3 4000, 3 poles.
Details for horizontal terminal connections.
Details for vertical terminal connections.
Draw-out termination for DMX3 6300, 3 poles.
Details for horizontal terminal connections.
Details for vertical terminal connections.
Draw-out termination for DMX3 2500, 4 poles.
Details for horizontal terminal connections.
Details for vertical terminal connections.
Draw-out termination for DMX3 4000, 4 poles.
Details for horizontal terminal connections.
Details for vertical terminal connections.
Draw-out termination for DMX3 6300, 4 poles.
Details for horizontal terminal connections.
Details for vertical terminal connections.
Connection details for DMX3 2500 fixed version with Icc values.
Connection details for DMX3 4000 fixed version with Icc values.
Connection details for DMX3 6300 fixed version with Icc values.
Details on terminal connections, torque values, and max 'X' dimensions.
General| Rated current In | 2500 A |
|---|---|
| Suitability for isolation | Yes |
| Rated operational voltage Ue | 690 V AC |
| Rated insulation voltage Ui | 1000 V |
| Rated impulse withstand voltage Uimp | 12 kV |
| Voltage Rating | 690 V AC |
| Standard | IEC 60947-2 |
| Mounting | Fixed |
| Poles description | 3P |
| Breaking capacity code | H, N |
| Utilisation category | B |
| Breaking Capacity | 50 kA |
To Next Page
