The NB1-63 is CHINT’s workhorse modular MCB for AC final circuits — the breaker inside a thousand distribution boards, and the one most often cloned. The specification below follows the manufacturer’s published datasheet; ask for the certificate file for the exact code you are quoting.
Technical data
Parameter
Value
Application
AC modular circuit breaker for final power distribution
Packing data for this page is still pending. pcs/carton, carton size, GW and CBM are the figures you need to compute landed cost, and they are the figures we will fill from our own carton stencils rather than from a third-party website. Ask us and we will send them with the quotation.
Higher breaking capacity: NB1-63H and NXB-63
If your board is close to the transformer or feeds motors, the 10 kA NB1-63H / NXB-63 is the correct part. Cross-reference against European equivalents on the cross-reference page — and note that a genuine 10 kA claim needs a 10 kA certificate.
DC systems: NB1-63DC
For PV strings and battery circuits, NB1-63DC covers 250 / 500 / 1000 V DC under IEC/EN 60947-2. DC arcs are not extinguished the way AC arcs are — a DC breaker used at AC voltage, or vice versa, is a common and dangerous substitution in solar quotes. We state the rated voltage on every line.
FAQ
Is this original CHINT? Yes, and we show you how to verify it before the balance is paid — watermark, QR code, batch trace. See /genuine-product/. We are an independent reseller and are not affiliated with CHINT Electric Co., Ltd.
NB1-63 or NB1-63H? 6 kA versus 10 kA breaking capacity. Use H for small-industrial feeders and short supply cables.
Can you private-label? Yes, above the factory’s MOQ for marking and packaging; artwork as a vector file.
Coil or frequency issues? Not on the MCB itself — MCBs are frequency-insensitive. Frequency matters for contactor coils and metering; see our 60 Hz note.
Get a Real Quotation, Not a Brochure
Send: model or photo · quantity · destination country · grid (V / Hz / 1φ or 3φ) · required certificate. You get unit price, packing data (carton / pcs / GW / CBM), lead time and the certificate list in one message, within 24 hours. If we cannot supply a code or a certificate you need, that first message says so.
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