SCHNEIDER ELECTRIC Compact NSX250F LV431403

Schneider Electric Compact NSX250F Basic Frame (LV431403)

Description

This is a Schneider Electric Compact NSX250F, a 3-pole basic frame for a Moulded Case Circuit Breaker (MCCB). This unit, part number LV431403, is supplied without a trip unit, providing the flexibility to install a thermal-magnetic or electronic trip unit tailored to your specific application needs. It serves as a robust foundation for circuit protection in industrial and commercial electrical distribution systems.

Specifications

• Manufacturer: Schneider Electric
• Series: Compact NSX
• Model: NSX250F
• Part Number: LV431403
• Type: Basic Frame for MCCB
• Number of Poles: 3
• Frame Ampere Rating (In): 250 A
• Rated Insulation Voltage (Ui): 800 V
• Rated Impulse Withstand Voltage (Uimp): 8 kV
• Breaking Capacity (Icu): 36 kA at 380/415 V AC 50/60 Hz

Label Info

• Compliance: IEC/EN 60947-2
• Category: A

Application

The LV431403 is ideal for building the core of a protective device for motors, generators, and distribution feeders. Its modularity allows for use in a wide range of low-voltage applications, from switchboards to individual machine protection.

Country of Origin

Made in Poland.

CO2 Impact

By purchasing this reused component, you are helping to avoid approximately 80.0 kg of CO2 emissions associated with the production of a new one. This choice supports a circular economy and reduces industrial waste.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What type of trip unit is compatible with this LV431403 frame?

This frame is compatible with Schneider Electric Micrologic 2.2, 5.2, and 6.2 electronic trip units, as well as TM-D and TM-G thermal-magnetic trip units designed for the NSX250 series.

What is the difference between the ‘F’ and ‘N’ ratings in the NSX250 series?

The letter denotes the breaking capacity (Icu) at 415VAC. The ‘F’ rating, as on this model, signifies a 36kA capacity. The ‘N’ rating indicates a higher capacity of 50kA.

Can this breaker frame be used in a DC application?

Yes, the Compact NSX frames can be used for DC circuits when equipped with a suitable DC-rated trip unit and wired correctly (typically with poles in series). Always consult the official Schneider Electric technical documentation for specific voltage and current deratings for DC applications.

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Last Update: Friday, March 13, 2026