ABB S203-D50 · technical datadatasheet · International · EnglishABB product-page export · 2026-09-30 · exact reference
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ABB S203-D50 · thermal-magnetic 3P breaker
Exact reference · S203-D50
Protects the selected circuit against overload and short circuit. The current rating and trip curve must suit the load, conductors and installation.
- Protection function
- Thermal-magnetic overload and short-circuit protection
- Poles
- 3
- Rated current
- 50 A · D curve
No integrated residual-current protection. Use separately selected earth-leakage protection where required.
Pricing confirmed by quote
Quote confirms reference and commercial terms; installation selection remains the installer’s responsibility.
Availability confirmed in your written quote
1
01 · Product role
What this product does in the system.
Protects the selected circuit against overload and short circuit. The current rating and trip curve must suit the load, conductors and installation.
Relevant applications
- Selected three-phase commercial or equipment circuits.
Why ReneWave may shortlist it
- Protects the selected circuit against overload and short circuit. The current rating and trip curve must suit the load, conductors and installation.
System position
Three-phase AC circuit: conceptual single-line view.
No integrated residual-current protection. Use separately selected earth-leakage protection where required.
The selected three-phase circuit is supplied through the closed device. Separate equipment is illustrative, not included or automatically recommended.
Read the technical explanation
No integrated residual-current protection. Use separately selected earth-leakage protection where required.
02 · Specifications
Ratings, dimensions and practical consequence.
Device identity
- ABB reference
S203-D50
- ABB article code
2CDS253001R0501
- Protection function
Thermal-magnetic overload and short-circuit protection
- Poles
3
- Rated current
50 A · D curve
- Rated operational voltage
400 V AC · IEC/EN 60898-1; 440 V AC · IEC/EN 60947-2
Breaking capacity by voltage
- Icn · IEC/EN 60898-1
6 kA · 400 V AC
- Icu · IEC/EN 60947-2
20 kA · 230 V AC; 10 kA · 400 / 440 V AC
- Ics · IEC/EN 60947-2
15 kA · 230 V AC; 7.5 kA · 400 / 440 V AC
03 · Selection points
Four practical selection points.
Match the device to the circuit, expected load and fault conditions. Request a quote for the exact reference you have selected.
- 01
Pole configuration
Three protected poles for L1, L2 and L3. No neutral pole: do not substitute it for a 3P+N or 4P device.
- 02
Current and trip function
D curve tolerates a higher starting-current peak than C. Check starting duty and disconnection conditions; it is not a universal motor choice.
- 03
Voltage and fault capacity
Compare the prospective fault current with the capacity at the actual supply voltage and standard. Icn, Icu and Ics are different ratings, not interchangeable labels.
- 04
Mounting and connections
DIN-rail mounting; use the ABB terminal limits and tightening torque in the installation document.
04 · Documentation
Keep the exact reference traceable.
Published documents for this exact reference support selection and handover.
ABB S200 · installation instructionsinstallation · International · Multilingual2CDS207104P0002 · product family
05 · Complete the system
Accessories and adjacent equipment, in one request.
Separate equipment is selected for the installation; no automatic companions are added to your request.
No automatic companion selection. Separate protection and accessories are chosen for the installation.
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