LV431630 Schneider Electric – ComPact NSX250F Circuit Breaker, TM250D Thermal-Magnetic Trip Unit, 250 A, 3P 3D, 36 kA
The Schneider Electric LV431630 is a ComPact NSX250F moulded-case circuit breaker, also known by the short code NSX250F TM250D 3P3D. It is a fixed, toggle-operated, 3-pole breaker for power distribution. It has a 250 A TM-D thermal-magnetic trip unit, protection on all three poles, and a breaking capacity of 36 kA at 380/415 V. It is suitable for isolation to EN/IEC 60947-2.
Breaking Capacity
| Voltage (AC 50/60 Hz) | Icu (IEC 60947-2) | Ics |
|---|---|---|
| 220/240 V | 85 kA | 85 kA |
| 380/415 V | 36 kA | 36 kA |
| 440 V | 35 kA | 35 kA |
| 500 V | 30 kA | 30 kA |
| 525 V | 22 kA | 22 kA |
| 660/690 V | 8 kA | 8 kA |
UL 508 ratings: 85 kA at 240 V, 35 kA at 480 V and 15 kA at 600 V.
TM250D Trip Unit Settings
- Trip unit rating: 250 A at 40 °C
- Thermal protection (L), Ir: adjustable 0.7–1 × In (175–250 A)
- Thermal delay: fixed, 120–400 s at 1.5 × In
- Magnetic protection (I): adjustable 5–10 × In
- Protection functions: LI
Main Electrical Data
- Rated operational voltage [Ue]: 690 V AC 50/60 Hz
- Rated insulation voltage [Ui]: 800 V AC
- Rated impulse withstand voltage [Uimp]: 8 kV
- Utilisation category: A
- Mechanical durability: 20,000 cycles
- Electrical durability: 10,000 cycles at 440 V In; 5,000 cycles at 690 V In
Installation and Accessories
The breaker mounts on a backplate with front connection top and bottom at a 35 mm pole pitch. It has 5 slots for electrical auxiliaries, such as MX shunt trips, MN undervoltage releases and auxiliary contacts. It also accepts the ComPact NSX100–250 rotary handles and motor mechanisms.
Dimensions and Environment
- Dimensions (W × H × D): 105 × 161 × 86 mm
- Weight: 2.4 kg
- Protection: IP40 (IEC 60529), IK07 (IEC 62262)
- Operating temperature: −35 to 70 °C
- Altitude: up to 2,000 m without derating
- Pollution degree: 3
Standards and Certifications
The breaker complies with EN/IEC 60947 and carries CCC, EAC and marine certifications. It is a Schneider Electric Green Premium product, REACH and RoHS compliant.
Successor Reference
Schneider Electric’s direct replacement in the new ComPacT generation is the C25F3TM250 (ComPacT NSX250F, 36 kA/415 V, 3P, TMD 250 A).
Buy the LV431630 Schneider Electric from Atlantech Drives
Atlantech Drives sources genuine Schneider Electric LV431630 ComPact NSX250F breakers for panel builders and maintenance teams who need a like-for-like replacement, and ships fast worldwide. Our senior commercial team can also quote the new C25F3TM250 and NSX accessories, and will confirm the right reference with you before you order. Request a quote today.
