Schneider Electric 18643 NG125N Circuit Breaker 3P C100A, 25kA
Schneider Electric 18643 — moulded case circuit breaker (MCCB): connection terminals Tunnel type — 16–70 mm² rigid / 10–50 mm² flexible; strip length 20 mm; tightening torque 6 N·m, dimensions 103 mm (H) × 81 mm (W) × 81 mm (D); weight 0.72 kg, 35 mm symmetrical DIN rail, clip-on system; vertical.
The Schneider Electric 18643 is a moulded case circuit breaker (MCCB). Published specifications for this part number include 3P (3 protected poles); thermomagnetic protection unit; trip curve C, utilisation category Category A per IEC 60947-2; suitable for use as isolator per IEC 60947-2, 35 mm symmetrical DIN rail, clip-on system; vertical handle position mounting, dimensions 103 mm (H) × 81 mm (W) × 81 mm (D); weight 0.72 kg, connection terminals Tunnel type — 16–70 mm² rigid / 10–50 mm² flexible; strip length 20 mm; tightening torque 6 N·m. Further catalogue data covers enclosure protection, endurance, locking, product family, rated current [in], rated insulation voltage [ui], rated voltage [ue], service breaking capacity [ics]. KKM Solutions sources Schneider Electric components to order. Request a quote from KKM Solutions for current pricing, lead time and availability.
| Connection terminals | Tunnel type — 16–70 mm² rigid / 10–50 mm² flexible; strip length 20 mm; tightening torque 6 N·m |
|---|---|
| Dimensions | 103 mm (H) × 81 mm (W) × 81 mm (D); weight 0.72 kg |
| Enclosure protection | IP20 per IEC 60529; IK05 per EN/IEC 62262 |
| Endurance | 20,000 mechanical cycles; 5,000 electrical cycles |
| Locking | Lockable handle with integrated locking provision |
| Mounting | 35 mm symmetrical DIN rail, clip-on system; vertical handle position |
| Poles | 3P (3 protected poles); thermomagnetic protection unit; trip curve C |
| Product Family | Acti 9 NG125; device designation NG125N |
| Rated current In | 100 A at 40 °C |
| Rated insulation voltage (Ui) | 690 V AC 50/60 Hz; rated impulse withstand voltage [Uimp]: 8 kV — per EN/IEC 60947-2 |
| Rated voltage (Ue) | 220–240 V, 380–415 V, 440 V, 500 V AC (50/60 Hz); ≤375 V DC |
| Service breaking capacity [Ics] | 37.5 kA at 220–240 V AC; 18.75 kA at 380–415 V AC; 15 kA at 440 V AC; 7.5 kA at 500 V AC; 20 kA at ≤375 V DC — per EN/IEC 60947-2 |
| Ultimate breaking capacity [Icu] | 50 kA at 220–240 V AC; 25 kA at 380–415 V AC; 20 kA at 440 V AC; 10 kA at 500 V AC; 20 kA at ≤375 V DC — all per EN/IEC 60947-2 |
| Utilisation category | Category A per IEC 60947-2; suitable for use as isolator per IEC 60947-2 |
Request a quote for this part
Email [email protected] or call (825) 454-5367 for pricing and availability.
Frequently Asked Questions
How much does 18643 cost?
18643 is listed at CA$276.94 (CAD) and can be ordered directly from this page with Add to Cart. That figure is a reference price and can change: your card is authorized at checkout and charged only once our order desk confirms the part and final price, and we email you first if anything has moved. Larger quantities or custom terms — email [email protected] for a volume quote.
Who manufactures the 18643?
18643 is a Schneider Electric part. KKM Solutions sources Schneider Electric components to the exact manufacturer specification and cross-checks every order against manufacturer part data before it ships.
Is 18643 discontinued, and can I still get one?
KKM Solutions does not publish a manufacturer lifecycle status for 18643 — check Schneider Electric's own product page for whether it is current, superseded, or end-of-life. It does not change what we can do: we source current-production, superseded and long-obsolete parts the same way, and where a part is genuinely unavailable we identify a form-fit-function equivalent. Send the part number through the quote form on this page, or use our obsolete part lookup at https://kkmsolutions.com/tools/obsolete-part-lookup/.
What are the key specifications of 18643?
Key specifications include Connection terminals: Tunnel type — 16–70 mm² rigid / 10–50 mm² flexible; strip length 20 mm; tightening torque 6 N·m; Dimensions: 103 mm (H) × 81 mm (W) × 81 mm (D); weight 0.72 kg; Enclosure protection: IP20 per IEC 60529; IK05 per EN/IEC 62262; Endurance: 20,000 mechanical cycles; 5,000 electrical cycles. The full specification table on this page lists every published attribute for this part.
How quickly can 18643 ship?
In-stock items are dispatched the same business day for orders placed by 11 AM; sourced and quoted items ship per the quoted lead time. KKM Solutions ships worldwide — to your site, warehouse, or freight forwarder.
Variants & Related Part Numbers
Other Schneider Electric part numbers in this family:
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