An MCB is the highest-volume and most counterfeited item in low-voltage distribution. Two things decide whether your order is safe: the breaking capacity actually printed on the unit, and the certificate behind it.
We stock the CHINT modular range in the versions export buyers actually need — 6 kA NB1-63 for residential boards, 10 kA NB1-63H / NXB-63 for light-industrial, DC NB1-63DC for solar and battery strings — plus equivalent ranges from DELIXI and TENGEN when you want a second source for the same amperage.
Model selector
Series
Poles
In
Icu
Standard
Typical use
NB1-63
1–4P
1–63 A
6 kA
IEC/EN 60898-1
Residential / final circuits
NB1-63H
1–4P
up to 63 A
10 kA
IEC/EN 60898-1
Light industrial feeders
NXB-63
1–4P
up to 125 A
6 kA
IEC 60898 / 60947-2
Building & industrial distribution
NB1-63DC
1P, 2P, 4P
1–63 A
6 kA
IEC/EN 60947-2
PV / DC up to 1000 V
Trip curves B / C / D. Multilingual marking and private-label packaging available on request (MOQ per finish).
Accessories — quote them next to the breaker, not as an afterthought
XF9 auxiliary contact · XF9J alarm contact · S9 shunt release · V9 undervoltage release · AX-X1 / AX-X3 aux blocks for NXB · busbar clips. Half of the “cheap” quotations in this market are cheap because these are excluded. Our line items list the accessory code beside the breaker code so you can compare like for like.
6 kA vs 10 kA — what getting it wrong costs
A 6 kA breaker in a board fed from a short, stiff supply can fail to interrupt a fault — the contacts weld or the housing vents. That is not a cosmetic failure; it is the reason the destination’s inspection regime asks for the certificate in the first place. If your customer’s installation is within roughly 100 m of a transformer, quote the H / 10 kA version and let them downgrade knowingly.
Certificates
CE, TÜV, CB and VDE files exist across the NB1 / NXB families; EAC, G-Mark, SONCAP and KEBS routes are handled per destination and per code. Send the country and the exact ordering code and we confirm which certificate applies before you order — not at the port.
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.
HAZAM is an independent trading company based in Yiwu, Zhejiang, China. CHINT, DELIXI, TENGEN and all other brands mentioned on this site are trademarks of their respective owners. We do not manufacture these products and are not an authorised representative or agent of the brand owners unless expressly stated with documentary evidence. Goods are supplied as genuine products purchased through lawful trade channels.