Purchase now: Schneider Electric LV431631 ComPact NSX250F
Purchase now: Atlantech Drives provides you the Schneider Electric LV431631, a complete fixed Molded Case Circuit Breaker (MCCB) from the leading ComPact NSX range. This 3-pole breaker is rated for **200 Amps** and features a **36 kA breaking capacity** at 415V (Performance Level F). It comes equipped with the **TM-D (Thermal-Magnetic)** trip unit, providing reliable protection for industrial distribution networks against overloads and short circuits.
Technical Specifications and Trip Unit Settings
The LV431631 is built on the NSX250 frame size but calibrated to 200A. The TM-D trip unit allows for adjustable thermal protection (Ir) from **0.7 to 1.0 x In** (140A to 200A), making it adaptable to your specific cable sizing. The magnetic protection (Im) is fixed at **2000A** (10 x In) to clear short circuits instantly. It features Schneider’s «Roto-Active» breaking technology, which limits the short circuit energy passed downstream, extending the life of your installation.
- Part Number: LV431631.
- Range: ComPact NSX250F.
- Rated Current (In): 200 A (at 40°C).
- Poles: 3P (3d Protected).
- Breaking Capacity (Icu): 36 kA @ 415 V AC.
- Trip Unit: TM-D (Thermal-Magnetic).
- Protection: Overload (Adjustable), Short-circuit (Fixed).
- Dimensions: 105 x 161 x 86 mm.
- Connection: Front screw terminals.
Expert Installation Advice: Torque Settings
Loose connections cause hotspots. Expert Tip: When connecting power cables or busbars to the LV431631, stick to the manufacturer’s torque specification (typically **15 Nm** for M8 bolts). We strongly recommend using a calibrated torque wrench and applying verification varnish (torque seal) to the bolt heads. This visual indicator helps during annual maintenance to verify that vibration hasn’t loosened the main contacts.
Frequently Asked Questions (FAQs)
Q: Can I upgrade the trip unit later?
A: Yes, the ComPact NSX range is modular. You can swap the TM-D unit for an electronic Micrologic unit (e.g., Micrologic 2.2) if you need higher accuracy or communication later on.
Q: Is it suitable for DC applications?
A: The TM-D trip unit works for DC, but the NSX250F frame has specific voltage limits for DC. For pure DC applications (PV or Battery), check the «NSX DC» range specifically.
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