S203MR-K63

Name: S203MR-K63
Brand: ABB
SKU: S203MR-K63

The ABB S203MR-K63 is a 3-pole miniature circuit breaker with a 63A current rating and 10kA SCCR. It is designed for industrial automation applications, providing safe and efficient electrical distribution.

Product ModelS203MR-K63

Material Number2CDS273437R0607

Product ID80354

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable PerformanceThe ABB S203MR-K63 is built to last, ensuring consistent performance in demanding industrial environments.
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2. High Current RatingWith a current rating of 63A, this circuit breaker can handle a wide range of electrical loads, making it versatile for various applications.
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3. Enhanced SafetyThe 10kA short-circuit current rating (SCCR) provides superior protection against electrical surges, ensuring the safety of people and equipment.
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4. Compact DesignThe compact dimensions of the S203MR-K63 make it easy to integrate into various electrical systems, saving space and improving overall efficiency.
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Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Standards

CSA 22.2 No. 235 IEC/EN 60947-2 UL 1077

Tripping Characteristic

Rated Operational Voltage

acc. to IEC 60898-1 400 V AC acc. to IEC 60898-1 400 V acc. to IEC 60947-2 400 V AC

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

5. Compliance with StandardsThis circuit breaker meets UL Standard 1077 and UL CCN QVNU2, ensuring compliance with industry standards for safety and performance.

Rated Current (In)

63 A

Rated Short-Circuit Capacity

(230 V AC) 10 kA (400 V AC) 10 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(230 V AC) 10 kA (400 V AC) 15 kA (400 V) 6 kA

Rated Conditional Short-Circuit Current (Inc)

(230 V) 10 kA (400 V) 10 kA

Rated Service Short-Circuit Breaking Capacity (Ics)

(400 V AC) 7.5 kA

Rated Frequency (f)

50 / 60 Hz

Power Loss

7.2 W at Rated Operating Conditions per Pole 2.4 W

Energy Limiting Class

Number of Protected Poles

Number of Poles

Overvoltage Category

III

Accessories Available

Yes

Connecting Capacity

Flexible with Ferrule 0.75 ... 25 mmÂ² Flexible 0.75 ... 25 mmÂ² Flexible 0.75 ... 25 mmÂ² Rigid 0.75 ... 35 mmÂ² Stranded 0.75 ... 35 mmÂ²

Terminal Type

Double Clamp

Ambient Air Temperature

Operation -25 ... +55 Â°C

Degree of Protection

IP20

Pollution Degree

Interrupting Rating acc. to UL1077

(480Y / 277 V AC) 10 kA

Width in Number of Modular Spacings

3.0

Product Net Width

52.5 mm

Product Net Height

100 mm

Product Net Depth / Length

71 mm

Product Net Weight

0.42 kg

Built-In Depth (t2)

69 mm

ETIM 8

EC000042 - Miniature circuit breaker (MCB)

ETIM 9

EC000042 - Miniature circuit breaker (MCB)

WEEE Category

5. Small Equipment (No External Dimension More Than 50 cm)

WEEE B2C / B2B

Business To Business

CN8

8536 20 10

UNSPSC

39121603

eClass

V11.0 : 27141901

IDEA Granular Category Code (IGCC)

4899 >> Miniature circuit breaker (MCB) screw-in model

Manufacturer ID

2CDS273437R0607