S204MR-K20

Name: S204MR-K20
Brand: ABB
SKU: S204MR-K20

The ABB S204MR-K20 is a high-performance miniature circuit breaker designed for reliable electrical protection. It meets UL 489, CSA 22.2 No. 5, and IEC/EN 60947-2 standards, offering a 20A rating and 10 kA interrupting capacity.

Product ModelS204MR-K20

Material Number2CDS274437R0487

Product ID78064

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable Electrical ProtectionThe ABB S204MR-K20 provides reliable electrical protection, ensuring your equipment and systems are safe from overcurrents and short circuits.
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2. High PerformanceWith a 20A rating and 10 kA interrupting capacity, this circuit breaker offers high performance in various applications, including industrial and commercial settings.
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3. Compliance with International StandardsThe S204MR-K20 meets UL 489, CSA 22.2 No. 5, and IEC/EN 60947-2 standards, ensuring it is compatible with a wide range of electrical systems globally.
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4. Efficient OperationDesigned for efficient operation, this miniature circuit breaker minimizes power loss and ensures smooth electrical flow, reducing downtime and maintenance needs.

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. Versatile ApplicationsSuitable for various applications, including ring tongue terminals, the S204MR-K20 is a versatile solution for electrical protection in different environments, from residential to industrial use.

Rated Current (In)

20 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) 11.2 kA

Rated Frequency (f)

50 / 60 Hz

Power Loss

10 W at Rated Operating Conditions per Pole 2.5 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

4.0

Product Net Width

70 mm

Product Net Height

100 mm

Product Net Depth / Length

71 mm

Product Net Weight

0.56 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

2CDS274437R0487