ABB S200 vs S800: Standard vs High-Performance MCB
ABB S200 and S800 MCBs compared on current rating, breaking capacity, standards, and the point where a feeder outgrows S200 and needs S800.
- Part number
- 2CDS253001R0505
- Model no
- S203-B50
In stock · 31
Dispatch
Planned dispatch date. We aim to ship within 1 business day. Depending on warehouse workload it can take 2–3 business days.
· From Türkiye
0
- CE
- CSA
- RoHS
- UKCA
ABB 2CDS253001R0505 S203-B50 3P 50A 6kA B-Curve DIN Rail Miniature Circuit Breaker
Other ratings in ABB S200
All 9 ratings ↓
| Motor power kW | Rated current In (A) | Part number | Stock | Price |
|---|---|---|---|---|
| 25 | 2CDS253001R0255 | In stock | $24.31 | |
| 32 | 2CDS253001R0325 | In stock | $30.42 | |
| 40 | 2CDS253001R0405 | In stock | $31.61 | |
| 50 | 2CDS253001R0505This part | In stock | $36.49 | |
| 63 | 2CDS253001R0635 | In stock | $41.35 |
Description
About the S203-B50
About the S203-B50
The ABB S203-B50 miniature circuit breaker (MCB), catalog number S203-B50 / SKU 2CDS253001R0505, is a 3-pole, 50 A, B-curve device from the S200 series rated at 230/400 V AC with a breaking capacity of 6 kA. Designed for DIN rail installation in industrial control panels and distribution boards, the S203-B50 provides reliable overcurrent and short-circuit protection for circuits in commercial and industrial applications.
Certifications & Standards
- IEC/EN 60898-1: International/European standard for circuit breakers for overcurrent protection in household and similar installations
- IEC/EN 60947-2: International/European standard for low-voltage switchgear — circuit breakers
- IEC 60898-1: IEC standard for overcurrent protection circuit breakers
- EN 60898-1: European harmonized standard for overcurrent protection circuit breakers
- IEC/EN 60898-1 (IEC 60898-1400 / IEC 60947-2440): Extended compliance references for specific application ratings
- IEC 60068-2: Environmental testing standard — climatic and mechanical durability
- EN 60947-2: European low-voltage switchgear standard for circuit breakers
- EN 45555: General methods for the assessment of the ability to recover resources from electrical and electronic equipment
- EN 60664: Insulation coordination for equipment within low-voltage systems
- UL 1077: UL standard for supplementary protectors for use in electrical equipment (North American market)
- CSA: Canadian Standards Association certification for North American compliance
- CE: European Conformity marking — meets EU safety, health, and environmental requirements
- UKCA: UK Conformity Assessed marking — meets Great Britain market requirements post-Brexit
- RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
- REACH: Compliant with EU Regulation (EC) No 1907/2006 on chemical safety
- WEEE: Waste Electrical and Electronic Equipment Directive compliance for responsible end-of-life disposal
Specification
Full specification
Technical 21
| Dielectric Test Voltage | 50 / 60 Hz - 1 min 2 kV |
|---|---|
| Rated Ultimate Short-Circuit Breaking Capacity (Icu) | (230 V AC) 20 kA, (400 V AC) 10 kA, (440 V AC) 10 kA, (230 V) 20 kA, (400 V) 10 kA |
| Rated Service Short-Circuit Breaking Capacity (Ics) | (230 V AC) 15 kA, (400 V AC) 7.5 kA, (440 V AC) 7.5 kA |
| Power Supply Connection | Arbitrary |
| Contact Position Indication | Red ON / Green OFF |
| Energy Limiting Class | 3 |
| Electrical Endurance | 10000 AC cycle |
| Mechanical Endurance | 20000 cycle |
| Number of Protected Poles | 3 |
| Number of Poles | 3P |
| Tightening Torque | 2.8 N·m |
| Screw Terminal Type | Failsafe Bi-directional Cylinder-lift Terminal |
| Actuator Marking | I / O |
| Actuator Material | Insulation Group II, Black, Sealable |
| Recommended Screw Driver | Pozidriv 2 |
| Accessories Available | Yes |
| Connecting Capacity | Busbar 10/10 mm², Flexible with Ferrule 0.75 ... 25 mm², Flexible 0.75 ... 25 mm², Rigid 0.75 ... 35 mm², Rigid 0.75 ... 35 mm², Stranded 0.75 ... 35 mm² |
| Installation Size | acc. to DIN 43880 1 |
| Wire Stripping Length | 12.5 mm |
| Terminal Type | Screw Terminals |
| Actuator Type | Toggle |
Electrical 12
| Tripping Characteristic | B |
|---|---|
| Rated Operational Voltage | acc. to IEC 60898-1 400 V AC, acc. to IEC 60947-2 440 V AC |
| Operational Voltage | Maximum (Incl. Tolerance) 440 V AC, Minimum 12 V AC, Minimum 12 V DC |
| Rated Insulation Voltage (Ui) | acc. to IEC/EN 60664-1 440 V |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV, at 2000 m 5 kV, at Sea Level 6.2 kV |
| Input Voltage Type | AC/DC |
| Rated Current (In) | 50 A |
| Rated Short-Circuit Capacity | (AC) 6 kA, (DC) 6 kA |
| Frequency (f) | 50 Hz |
| Rated Frequency (f) | 50 / 60 Hz |
| Power Loss | 9.75 W, at Rated Operating Conditions per Pole 3.25 W |
| Overvoltage Category | III |
Design 1
| Housing Material | Insulation Group II, RAL 7035 |
|---|
Show all 84 specifications ↓ Show less ↑50 more values in Identification, Technical UL/CSA, Material Compliance, Environmental, Dimensions, Engineering, Installation, External Classifications and Standards, Logistics.
Identification 12
| Part number | 2CDS253001R0505 |
|---|---|
| Type designation | S203-B50 |
| Brand | ABB |
| Condition | New, factory sealed |
| Source | ABB and its authorised distributors |
| Warranty | Manufacturer warranty |
| EAN | 4016779550963 |
| ETIM class | EC000042 |
| eCl@ss | 27141901 |
| Package Level 1 Units | carton 1 piece |
| Package Level 1 Gross Weight | 0.38 kg |
| E-Number (Sweden) | 2100456 |
Technical UL/CSA 4
| Maximum Operating Voltage UL/CSA | 110 V DC, 480Y/277 V AC |
|---|---|
| Interrupting Rating acc. to UL1077 | (277 V AC) 6 kA, (480Y / 277 V AC) 6 kA, (240 V) 10 kA |
| Connecting Capacity UL/CSA | Busbar 18-8 AWG, Conductor 18-4 AWG |
| Tightening Torque UL/CSA | 18 in·lb |
Material Compliance 6
| RoHS Information | Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019 |
|---|---|
| RoHS Date | 20260312 |
| REACH Information | False - does not contain substances > 0.1 mass percentage |
| REACH Date | 20260312 |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |
| WEEE B2C / B2B | Business To Business |
Environmental 7
| Ambient Air Temperature | Operation -25 ... +55 °C, Storage -40 ... +70 °C |
|---|---|
| Reference Ambient Air Temperature | 30 °C |
| Degree of Protection | IP20, IP40, Enclosure with Cover IP40 |
| Pollution Degree | 3 |
| Environmental Conditions | 28 cycles, with 55 °C / 90-96 %, and 25 °C / 95-100 % |
| Resistance to Vibrations | 20 Cycles with Load 0.8 In: 5g 5 ... 150 ... 5 Hz |
| Resistance to Shock acc. to IEC 60068-2-27 | 25g 2 shocks 13 ms |
Dimensions 7
| Width in Number of Modular Spacings | 3 |
|---|---|
| Product Net Width | 52.5 mm |
| Product Net Height | 88 mm |
| Product Net Depth / Length | 69 mm |
| Product Net Weight | 0.36 kg |
| Pole Net Weight | 0.125 kg |
| Built-In Depth (t2) | 69 mm |
Engineering 1
| EPLAN Data | 9AAC204436_EPLAN |
|---|
Installation 3
| Mounting Type | DIN-Rail |
|---|---|
| Mounting on DIN Rail | TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715, TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715 |
| Mounting Position | any |
External Classifications and Standards 6
| ETIM 10 | EC000042 - Miniature circuit breaker (MCB) |
|---|---|
| UNSPSC | 39121603 |
| eClass | V11.0 : 27141901 |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 |
| Certification Agency | EN, IEC, UL |
| Standardization Body | EN, IEC, UL |
Logistics 4
| Shipping weight | 0.4 kg |
|---|---|
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 30 Oct 2026
Documents
Documents for 2CDS253001R0505
No documents are on file for this part yet.
Ask us for the datasheet
Other ratings
All 9 ratings in ABB S200
ABB ABB S200 series page →
| Motor power | Rated current | Part number | Model no | Stock | Dispatch | Price | Add to cart |
|---|---|---|---|---|---|---|---|
| 6 A | 2CDS253001R0065 | S203-B6 | In stock | $29.19 | |||
| 10 A | 2CDS253001R0105 | S203-B10 | In stock | $24.31 | |||
| 16 A | 2CDS253001R0165 | S203-B16 | In stock | $24.31 | |||
| 20 A | 2CDS253001R0205 | S203-B20 | In stock | $24.31 | |||
| 25 A | 2CDS253001R0255 | S203-B25 | In stock | $24.31 | |||
| 32 A | 2CDS253001R0325 | S203-B32 | In stock | $30.42 | |||
| 40 A | 2CDS253001R0405 | S203-B40 | In stock | $31.61 | |||
| 50 A | 2CDS253001R0505 This part | S203-B50 | In stock | $36.49 | |||
| 63 A | 2CDS253001R0635 | S203-B63 | In stock | $41.35 |
Certifications
Certifications and standards
- CE
- CSA
- RoHS
- UKCA
- IEC/EN 60898-1
- IEC/EN 60947-2
- UL 1077
Quick answers
Questions about the S203-B50
What is the rated current of S203-B50?
The rated current of S203-B50 is 50 A.
Which supply voltage is S203-B50 rated for?
The rated operational voltage of S203-B50 is 230–400 V AC.
What is the HS code of S203-B50 for customs?
The tariff (HS) code on file for S203-B50 is 853620.
What is the EAN of S203-B50?
The EAN (GTIN) of S203-B50 is 4016779550963.
Where does S203-B50 ship from, and how fast?
S203-B50 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
Guides
Guides for MCB
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Reviews
Customer reviews
Series
ABB ABB S200
- Brand
- ABB
- Series
- ABB S200
- Rated current
- 6–63 A
- Supply voltage
- 230–400 V AC
- Ratings listed
- 9
