1. Produk Lebihview
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.

Rajah 1: Depan view of the ABB S203-B16 Miniature Circuit Breaker, showing the toggle switch and model markings.
2. Maklumat Keselamatan
Always adhere to local electrical codes and regulations during installation and operation. Installation should only be performed by qualified personnel.
- Pastikan kuasa diputuskan sebelum pemasangan atau penyelenggaraan.
- Jangan kendalikan pemutus litar jika ia kelihatan rosak.
- Pakai peralatan perlindungan diri (PPE) yang sesuai.
- Refer to the wiring diagrams for correct connections.
3. Persediaan dan Pemasangan
The S203-B16 circuit breaker is designed for DIN-rail mounting.
- Pemasangan: Securely attach the circuit breaker to a standard DIN-rail. Ensure the mounting clip engages properly.
- Pendawaian: Connect the electrical conductors to the screw terminals. The wire size supported is 18 - 4 AWG for conductors and 18 - 8 AWG for busbars.
- Pengetatan Terminal: Pastikan semua terminal skru diketatkan kepada tork yang ditentukan untuk mengelakkan sambungan longgar dan terlalu panas.

Rajah 2: Belakang view illustrating the DIN-rail mounting mechanism.

Rajah 3: Atas view showing the input terminals of the circuit breaker.

Rajah 4: Bawah view showing the output terminals of the circuit breaker.
4. Arahan Operasi
The ABB S203-B16 circuit breaker is operated via a toggle actuator.
- Untuk MENGHIDUPKAN: Push the toggle actuator upwards to the "ON" position.
- Untuk MATI: Push the toggle actuator downwards to the "OFF" position.
- Petunjuk Perjalanan: In case of an overcurrent or short circuit, the toggle actuator will automatically move to an intermediate "TRIPPED" position.
- Menetapkan Semula Selepas Perjalanan: 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. Penyelenggaraan
The ABB S203-B16 circuit breaker requires minimal maintenance. Regular inspections are recommended to ensure proper function and safety.
- Pemeriksaan Visual: Periksa pemutus litar secara berkala untuk sebarang tanda kerosakan fizikal, perubahan warna atau sambungan yang longgar.
- Pembersihan: If necessary, clean the exterior of the circuit breaker with a dry, lint-free cloth. Do not use abrasive cleaners or solvents.
- Semakan Terminal: Verify that all terminal connections remain tight.
- Keadaan Persekitaran: Ensure the operating environment remains within the specified temperature range (-25 to 55 deg C) and IP20 enclosure rating.
6. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Pemutus litar sering tersandung. | Overload, short circuit, or faulty appliance/wiring. | Reduce load, check for short circuits, inspect connected equipment and wiring. |
| Pemutus litar tidak ditetapkan semula. | 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. | Overload, loose connections, or internal fault. | 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. Spesifikasi
| Ciri | Perincian |
|---|---|
| Model | S203-B16 |
| taip | Vol. Rendahtage Miniature Circuit Breaker |
| Bilangan Tiang | 3 |
| Voltage Peringkat | 480Y/277 VAC |
| AmpPeringkat yang padat | 16 A |
| Penilaian Kekerapan | 50/60 Hz |
| Penilaian Gangguan | 6 kA |
| Jenis Perjalanan | Thermal/Magnetic |
| Jarak Perjalanan | 3 - 5 A Magnetic and 1.13 - 1.45 A Thermal |
| Jenis Penggerak | Togol |
| Saiz Wayar | 18 - 4 AWG Conductor, 18 - 8 AWG Busbar |
| Jenis Terminal | skru |
| Jenis Kepungan | IP20 |
| Jenis Pemasangan | DIN-Rel |
| Penilaian Suhu | -25 Untuk 55 darjah C |
| Dimensi | 88 mm Height x 52-1/2 mm Width x 69 mm Depth |
| bahan | Plastik yang dibentuk |
| Standards/Approvals | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 |

Rajah 5: Sisi view displaying product specifications and international certifications.

Rajah 6: Sisi view showing the product barcode and manufacturing details.
8. Maklumat Waranti
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 weblaman web atau hubungi khidmat pelanggan ABB secara langsung. Simpan resit pembelian anda sebagai bukti pembelian.
9. Sokongan Pelanggan
If you require technical assistance, have questions about installation, operation, or maintenance, please contact ABB customer support.
- Pegawai ABB Webtapak: www.abb.com
- Sokongan Teknikal: Refer to the support section on the ABB website for contact numbers and online resources specific to your region.





