S204MR-K0.3

Name: S204MR-K0.3
Brand: ABB
SKU: S204MR-K0.3

The ABB S204MR-K0.3 is a high-performance miniature circuit breaker designed for 4-pole applications with a 0.3 A rating. It meets CSA 22.2 No. 235 and IEC/EN 60947-2 standards, ensuring reliable protection and efficient operation.

Product ModelS204MR-K0.3

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Performance and ReliabilityThe ABB S204MR-K0.3 is engineered to provide reliable protection in 4-pole applications, ensuring the safety and efficiency of your electrical system.
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2. Compliance with International StandardsThis miniature circuit breaker meets CSA 22.2 No. 235 and IEC/EN 60947-2 standards, guaranteeing compliance with international safety regulations.
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3. Compact DesignWith its compact design, the S204MR-K0.3 is ideal for space-constrained installations, making it a versatile choice for various electrical applications.
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4. Efficient OperationDesigned for efficient operation, this circuit breaker minimizes power loss and ensures optimal performance in a wide range of electrical systems.

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. Durable ConstructionBuilt with durable materials, the S204MR-K0.3 offers a long lifespan and high mechanical endurance, ensuring it can withstand the demands of frequent use and harsh environments.

Rated Current (In)

0.3 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

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

2CDS274437R0117