ABB S203-B16
ABB S203-B16 Miniature Circuit Breaker User Manual
Model: S203-B16
1. Pwodwi souview
The ABB S203-B16 is a low voltage, 3-pole miniature circuit breaker designed for equipment protection. It features a 480Y/277 VAC voltage rating, a 16 A amperage rating, and an interrupt rating of 6 kA.
This device incorporates thermal/magnetic trip mechanisms for reliable overcurrent fault protection in various applications, including commercial appliances, control circuits, and computer equipment.

Figi 1: Devan view of the ABB S203-B16 Miniature Circuit Breaker, showing the toggle switch and model markings.
2. Enfòmasyon sou Sekirite
Always adhere to local electrical codes and regulations during installation and operation. Installation should only be performed by qualified personnel.
- Asire w ke pouvwa a dekonekte anvan enstalasyon oswa antretyen.
- Pa sèvi ak disjonktè a si li sanble domaje.
- Mete ekipman pwoteksyon pèsonèl (PPE) apwopriye.
- Refer to the wiring diagrams for correct connections.
3. Enstalasyon ak Enstalasyon
The S203-B16 circuit breaker is designed for DIN-rail mounting.
- Montaj: Securely attach the circuit breaker to a standard DIN-rail. Ensure the mounting clip engages properly.
- Fil elektrik: Connect the electrical conductors to the screw terminals. The wire size supported is 18 - 4 AWG for conductors and 18 - 8 AWG for busbars.
- Sereman Tèminal: Asire w ke tout tèminal vis yo sere ak koupl espesifye a pou anpeche koneksyon ki lach epi surchof.

Figi 2: Dèyè view illustrating the DIN-rail mounting mechanism.

Figi 3: Top view showing the input terminals of the circuit breaker.

Figi 4: Anba view showing the output terminals of the circuit breaker.
4. Operasyon Enstriksyon
The ABB S203-B16 circuit breaker is operated via a toggle actuator.
- Pou limen: Push the toggle actuator upwards to the "ON" position.
- Pou etenn: Push the toggle actuator downwards to the "OFF" position.
- Endikasyon vwayaj: In case of an overcurrent or short circuit, the toggle actuator will automatically move to an intermediate "TRIPPED" position.
- Reyajiste apre vwayaj la: To reset the circuit breaker after a trip, first move the toggle completely to the "OFF" position, then push it upwards to the "ON" position. Investigate the cause of the trip before resetting.
5. Antretyen
The ABB S203-B16 circuit breaker requires minimal maintenance. Regular inspections are recommended to ensure proper function and safety.
- Enspeksyon vizyèl: Enspekte disjonktè a detanzantan pou nenpòt siy domaj fizik, dekolorasyon, oswa koneksyon ki lach.
- Netwayaj: If necessary, clean the exterior of the circuit breaker with a dry, lint-free cloth. Do not use abrasive cleaners or solvents.
- Verifikasyon Tèminal: Verify that all terminal connections remain tight.
- Kondisyon anviwònman: Ensure the operating environment remains within the specified temperature range (-25 to 55 deg C) and IP20 enclosure rating.
NAN. Depanaj
| Pwoblèm | Kòz posib | Solisyon |
|---|---|---|
| Disjonktè a deklanche souvan. | Overload, short circuit, or faulty appliance/wiring. | Reduce load, check for short circuits, inspect connected equipment and wiring. |
| Disjoncteur a pa retabli. | Persistent fault, internal damage. | Ensure the fault is cleared. If it still doesn't reset, the unit may be damaged and require replacement. Consult a qualified electrician. |
| Circuit breaker feels hot. | Twòp chaj, koneksyon ki lach, oswa defo entèn. | Reduce load, check terminal tightness, or replace the unit if overheating persists without apparent cause. |
If troubleshooting steps do not resolve the issue, contact a qualified electrician or ABB customer support.
7. Espesifikasyon
| Karakteristik | Detay |
|---|---|
| Modèl | S203-B16 |
| Kalite | Low Voltage Miniature Circuit Breaker |
| Kantite poto | 3 |
| Voltage Rating | 480Y/277 VAC |
| AmpRating epòk | 16 A |
| Evalyasyon frekans | 50/60 Hz |
| Entèwonp Rating | 6 kA |
| Kalite vwayaj | Thermal/Magnetic |
| Ranje vwayaj | 3 - 5 A Magnetic and 1.13 - 1.45 A Thermal |
| Kalite actuator | Baskile |
| Gwosè fil | 18 - 4 AWG Conductor, 18 - 8 AWG Busbar |
| Kalite tèminal | Vis |
| Kalite patiraj | IP20 |
| Kalite aliye | tren DIN |
| Evalyasyon Tanperati | -25 a 55 degre C |
| Dimansyon | 88 mm Height x 52-1/2 mm Width x 69 mm Depth |
| Materyèl | Mwazi plastik |
| Standards/Approvals | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 |

Figi 5: Side view displaying product specifications and international certifications.

Figi 6: Side view showing the product barcode and manufacturing details.
8. Enfòmasyon sou Garanti
For detailed warranty information regarding your ABB S203-B16 Miniature Circuit Breaker, please refer to the official ABB warranty policy available on the manufacturer's website or contact ABB customer service directly. Keep your purchase receipt as proof of purchase.
9. Sipò pou Kliyan
If you require technical assistance, have questions about installation, operation, or maintenance, please contact ABB customer support.
- ABB Official Websit: www.abb.com
- Sipò teknik: Refer to the support section on the ABB websit pou nimewo kontak ak resous sou entènèt espesifik pou rejyon ou an.
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