Technical service profile for ABB S203-B16
ABB S203-B16 should be specified as a complete device, not inferred from a similar family name. Its protection, control or measurement role must match the actual equipment and installation.
Technical data for model selection
| Technical item | Verified value / selection note |
|---|---|
| Complete designation | S203-B16 |
| Product family | S203 |
| Component role | three-pole S200 miniature circuit breaker |
| Poles | 3 |
| Rated current | 16 A |
| Trip curve | B |
| Order code | 2CDS253001R0165 |
| Series | S200 |
| Final configuration | Confirm exact nameplate, hardware revision and order options before purchase |
The stated S203-B16 data identify the selected reference and its engineering boundaries. Confirm the unit label, applicable standard and exact options before ordering or energizing.
What must match
Check S203-B16 against three-phase voltage, conductor, fault capacity and curve B inrush fit. In procurement, ask for photographs or ABB documentation that show the complete designation and terminal configuration.
If the candidate S203-B16 differs from the installed device, document the difference and obtain an engineering decision before fitment.
Design intent
The intended duty of S203-B16 is to protect a three-phase small-load branch. Mark the circuit, asset or process tag and preserve the plant drawing that governs this function.
Do not assume a different suffix within S203 provides the same duty as S203-B16; ratings and accessory arrangements can differ.
Installation controls
Before working on S203-B16, apply the approved isolation and permit controls. Capture the existing connections, settings and safety functions as a recoverable baseline.
Install S203-B16 with the correct conductor, panel spacing and environmental protection. Follow the ABB instructions for the specific construction rather than using a generic wiring assumption.
Handover evidence
For S203-B16, verify phase identification and all-pole operation. Record the measured result, witness and date beside the equipment tag.
Retain the final S203-B16 designation, revision, settings and test outcome in the maintenance record so later work does not rely on memory.
Fault-finding baseline
For a future fault involving S203-B16, keep records of upstream supply, load, trip or output state and connected accessories. This separates a device issue from a wiring or process issue.
A replacement S203-B16 should be checked at the same duty point as the prior installation, with abnormal behavior investigated before return to service.
Related model references
The following S203 codes are indexed with ABB S203-B16 for search and enquiry. They remain configuration-specific; this grouping does not assert electrical, mechanical or approval interchangeability.
- 2CDS253001R0325-S203-B32
- S203 B16 2CDS253001R0165
- S203-B2
- S203-B2 (2CDS253001R0025)
- S203-D32
- S203-K63
Enquiry checklist
Send the exact ABB S203-B16 designation with circuit or plant tag, required rating, accessories and approval. Confirm current lifecycle and delivery scope.
On receipt of S203-B16, compare label, package contents and documentation to the approved request. Hold any discrepancy for review before fitting.
