Short answer: two different ABB families sit behind this question, so there are two answers. The S200 is a modular MCB — dual-certified to IEC/EN 60898-1 and IEC/EN 60947-2, 18 mm per pole, 6 kA base at 230 V and higher ratings by type. Its closest CHINT equivalents are the NXB-63 (Icn 6 kA, 10 kA in the H version) and the NB1-63H. The Tmax and Tmax XT are moulded-case breakers — XT1 to XT4 cover roughly 100–630 A with Icu from 18 kA up to 150 kA by frame and class, with Ekip trip units. There the CHINT mapping is NXM (16–1600 A, up to 70 kA at 400 V) and NM8N (frames 125–1600 A). All of this is a series-level comparison, not an approved replacement claim.
Two families, two different mapping rules
The S200 and the Tmax are not competitors to each other, so they cannot share one cross-reference answer. The S200 lives in the consumer-unit and small-distribution world: din-rail, 18 mm modules, household and light-commercial circuits. The Tmax lives in switchboards: fixed or plug-in moulded-case devices with adjustable or electronic trip units, carrying feeder and sub-main currents.
Mapping a modular breaker is mostly about rating, curve, pole count and module width. Mapping a moulded-case breaker adds two variables that decide the outcome — the trip unit type and the coordination study. That is why the second half of this page reads differently from the first.
As always: brand names and model numbers are the property of their respective owners and are used for comparison only. A cross-reference here names a comparable device, not an approved substitute.
S200: the modular MCB mapping
| Attribute | ABB S200 (S201–S204) | CHINT NXB-63 | CHINT NB1-63 / NB1-63H |
|---|---|---|---|
| Device type | Modular MCB | Modular MCB | Modular MCB |
| Standard | IEC/EN 60898-1 and IEC/EN 60947-2 | IEC/EN 60898-1 | IEC/EN 60898-1 (60947-2 version available) |
| Rated current | Up to 63 A | 1–63 A | 1–63 A |
| Curves | B, C, D, K and others by type | B, C, D | B, C, D |
| Breaking capacity | From 6 kA base, higher by type | Icn 6 kA; 10 kA in the H version | Icn 6 kA; 10 kA in NB1-63H |
| Module width | 18 mm per pole | 18 mm per pole | 18 mm per pole |
| Poles | 1P–4P and multi-pole variants | 1P–4P, 1P+N, 3P+N | 1P–4P, 1P+N, 3P+N |
At the 6 kA step the mapping is clean. At 10 kA it holds with the H-version codes. Above that, the S200 family reaches into rating bands that a 6 kA or 10 kA modular device cannot reach, and there the honest answer is a higher-rated modular code or a different device class — not a stretched equivalence. For the smaller ABB HomeRun / M200M line the mapping is different again: those are 6 kA residential-class devices, and the natural comparison is the NXB-40 or the DELIXI DZ47 series.
One caution we repeat because it is a real sourcing trap: at the 6 kA residential step, a 4.5 kA device is not an S200 equivalent. The 4.5 kA line is fine for a domestic final circuit, but if the board or the client’s specification says 6 kA, only a 6 kA or higher device answers it. We flag the difference in the quotation rather than let a headline price hide it.
Tmax and Tmax XT: the moulded-case mapping
| Attribute | ABB Tmax / Tmax XT | CHINT NXM | CHINT NM8N |
|---|---|---|---|
| Device type | Moulded-case circuit breaker | Moulded-case circuit breaker | Moulded-case circuit breaker |
| Standard | IEC/EN 60947-2 | IEC/EN 60947-1/-2/-3 | IEC/EN 60947-1/-2/-3/-4-1 |
| Frame / current range | XT1–XT4 roughly 100–630 A (line-up extends further) | Frames 125 / 160 / 250 / 400 / 630 / 800 / 1000 / 1250 / 1600; In 16–1600 A | Frames 125 / 250 / 400 / 630 / 800 / 1600 A |
| Breaking capacity | Icu from 18 kA up to 150 kA by frame and class | Up to 70 kA at 400 V AC; up to 50 kA at 690 V AC | Classed B/C/S/Q/H/R; up to 100 kA at 440 V AC in the top class, AC 690 V down to 10 kA |
| Trip unit | Thermal-magnetic and Ekip electronic trip units | Thermal-magnetic, instantaneous magnetic, electronic | Thermal-magnetic and electronic |
| Mounting | Fixed, plug-in and withdrawable options | Fixed and plug-in | Fixed and plug-in |
Read that table carefully, because the breaking-capacity rows are the whole argument. An ABB class letter and a CHINT class letter are not the same number. The letter tells you which kA row in that maker’s catalogue the code sits in; it does not transfer between brands. A cross-reference must quote both published values at the same voltage, taken from the datasheets, not infer one from the other. Our MCCB selection guide walks through how a frame code, a class letter and a pole count combine into one order code, and how to read a breaker marking shows why the voltage always travels with the kA figure.
For the larger legacy Tmax frames in the 400–1600 A band, the mapping continues into NXM-630 through NXM-1600, and above that into air circuit breakers. Again: comparison, not substitution.
Where “equivalent” stops: the trip unit
This is the point at which a well-written cross-reference has to slow down.
| Function | Can it be mapped? | Why |
|---|---|---|
| Thermal-magnetic trip (In, fixed magnetic) | Comparable | Both sides publish In and an instantaneous range; the values can be listed side by side per code. |
| Electronic trip — LSIG four-section protection | Similar functions only | The protection shape is comparable, but measurement accuracy, harmonic handling and energy-metering functions are not equivalent. Write “similar protection functions”, never “equivalent”. |
| Communication (Modbus, fieldbus) | Not interchangeable | Protocol stacks and register maps are maker-specific. A controller expecting a given device does not simply accept another. |
| Plug-in base / racking | Brand-specific | Interfaces are proprietary. Replace the whole device — do not plan to reuse the base or the racking of the outgoing breaker. |
| Cascade / back-up coordination | Must be re-run | Published cascade tables are maker-specific combinations of a specific upper and lower device. A mixed brand pair is a new study, not a table lookup. |
The practical rule: with thermal-magnetic devices you can compare numbers. With electronic trip units you can compare functions but you cannot promise behaviour, and you must re-run the coordination study. If your project has a protection report stamped by someone else’s software, that report does not carry over when the brand changes — and we will say so before you order rather than after.
Certificates and market fit
An ABB certificate does not cover a CHINT code and a CHINT certificate does not cover an ABB code. In our moulded-case range the publicly documented certificates include CB, CE and EAC, attached to specific codes rather than to a whole family. If your market needs SAA (Australia), UL 489 (North America), SASO or G-Mark (Gulf), each is a separate question and each is answered by the certificate file for the code you actually buy. We send that file with the quotation. See how we verify genuine product and the full cross-reference page for the other brands.
FAQ
Q: Is the CHINT NXB-63 an ABB S200 equivalent?
A: It is a comparable modular MCB at the 6 kA and 10 kA steps — 18 mm per pole, In up to 63 A, B/C/D curves. It is not an approved or official replacement and the accessories are not interchangeable. Verify the exact code for the rating you need.
Q: What replaces an ABB Tmax XT moulded-case breaker?
A: The closest CHINT families are NXM (16–1600 A, up to 70 kA at 400 V) and NM8N (frames 125–1600 A). The class letter and the kA value must be matched at the same voltage, from the datasheets, code by code.
Q: Can I keep my existing plug-in base and just change the breaker?
A: No. Plug-in and racking interfaces are brand-specific. Plan to replace the device and its base together.
Q: If both devices are “electronic trip”, are they interchangeable?
A: Only at the level of protection functions. Measurement accuracy, harmonic handling, metering and communication are not equivalent, and the coordination study has to be re-run.
Q: Does a 4.5 kA breaker replace a 6 kA S200?
A: No. If the requirement is 6 kA, a 4.5 kA device does not answer it. Match the minimum breaking capacity the board or the specification asks for.
Q: Are the certificates transferable between brands?
A: No. Every certificate names an exact ordering code. Cross-reference the ratings, then check the certificate per code.
Send the code, get the comparison
Tell us: the ABB code you are replacing · whether it is modular or moulded-case · frame and class · the kA figure at your voltage · trip unit type · poles and mounting · quantity · destination and grid. You get the candidate CHINT code, its datasheet page, and the certificate that covers it, within 24 hours. Request a quotation.
Related: ABB, Schneider and Siemens cross-reference · MCB and DC breaker catalogue · MCCB and ACB range · Choosing an MCCB · How to read a breaker marking · How we verify genuine product · Contact
Brand names and model numbers are the property of their respective owners and are referenced for comparison only. CHINT products are independently manufactured and independently certified; they are not authorised, sponsored or officially approved replacements. Cross-reference data is indicative — final selection must be verified against official datasheets by a qualified engineer. HAZAM is an independent trading company; we are not the manufacturer and we are not an appointed distributor. Certificates and ratings always refer to the exact ordering code.