The S203P-Z63: The Z63 designation indicates a Z-characteristic trip curve — designed for protection of semiconductor loads and circuits with high inrush currents where a B or C curve would nuisance-trip. The 63 refers to the rated current in amperes. This is the part to specify when downstream equipment includes rectifiers, power supplies, or electronic ballasts that draw a short-duration surge on startup.

ABB S203P-Z63 Miniature Circuit Breaker, Current Lifecycle
ABB, System pro M compact, S203P-Z63 miniature circuit breaker, current lifecycle stage, 0.91 kgs.
Specifications
Specifications
| Parameter | Value |
|---|---|
| Weight | 0.91 kgs |
Product details
Frequently asked questions
Where can I buy S203P-Z63 and how do I get a price?
This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ to get a firm price and lead time for your quantity.
What compliance documentation does this brand provide for S203P-Z63?
ABB typically supplies a Declaration of Conformity covering the applicable EU directives (Low Voltage Directive, EMC Directive) and CE marking for this series. RoHS and REACH compliance statements are available on request through the standard documentation package. Specific UL or IEC certification listings should be confirmed at quote time for the exact variant.