Trip Unit Summary
General-Purpose Applications
The following table shows the trip units compatible with the ComPact NSX DC circuit breakers for general-purpose applications. For further details, refer to LVPED208006EN ComPact NSX, ComPact INS/INV, MasterPact NW DC - DC PV Catalog.
|
Trip Units |
Built-in / Interchangeable |
NSX100 |
NSX160 |
NSX250 |
NSX400 |
NSX630 |
NSX1200 |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
1P |
2P |
3P/4P |
1P |
2P |
3P/4P |
3P/4P |
3P/4P |
3P/4P |
2P |
||
|
NA (switch-disconnector) |
Built-in |
– | – | – | – | – | – | – | ✔ | ✔ | – |
|
NA (switch-disconnector) |
Interchangeable |
– | – | ✔ | – | – | ✔ | ✔ | – | – | – |
|
TM-D |
Built-in |
✔ | ✔ | – | ✔ | ✔ | – | – | – | – | – |
|
TM-D |
Interchangeable |
– | – | ✔ | – | – | ✔ | – | – | – | – |
|
TM-DC |
Built-in |
– | – | – | – | – | – | – | ✔ | ✔ | ✔ |
|
TM-DC |
Interchangeable |
– | – | ✔ | – | – | ✔ | ✔ | – | – | – |
|
TM-G |
Interchangeable |
– | – | ✔ | – | – | ✔ | ✔ | – | – | – |
Photovoltaic Applications
The following table shows the trip units compatible with the ComPact NSX DC circuit breakers for photovoltaic applications. For further details, refer to LVPED208006EN ComPact NSX, ComPact INS/INV, MasterPact NW DC - DC PV Catalog
|
Trip Units |
Built-in / Interchangeable |
NSX80 |
NSX100 |
NSX125 |
NSX160 |
NSX200 |
NSX400 |
NSX500 |
|---|---|---|---|---|---|---|---|---|
|
4P |
4P |
4P |
4P |
4P |
4P |
4P |
||
|
NA (switch-disconnector) |
Built-in |
– | ✔ | – | ✔ | ✔ | ✔ | ✔ |
|
TM-DC PV |
Built-in |
✔ | – | ✔ | ✔ | ✔ | ✔ | ✔ |
Protections and Settings of Thermal-Magnetic Trip Units
Upgradability of Thermal-Magnetic Trip Units
Interchangeable trip units are upgradable. See tables above for more information on interchangeable trip units.
Onsite swapping of interchangeable trip units is simple and reliable:
-
No connections to make
-
No special tools (for example, calibrated torque wrench)
-
Compatibility of trip units ensured by mechanical cap
-
Torque limited screw ensures proper mounting (see drawing below)
The design of the trip units limits the risk of incorrect tightening or oversights. The simplicity of the swapping process means that it is easy to make the necessary adjustments as operation and maintenance processes evolve.
