S204MR-K50

Name: S204MR-K50
Brand: ABB
SKU: S204MR-K50

The ABB S204MR-K50 is a high-quality, four-pole miniature circuit breaker with a 50A amperage rating. It offers reliable protection for your electrical system, ensuring safe and efficient distribution of power. Suitable for applications operating at 50 to 60 Hz frequencies.

Product ModelS204MR-K50

Material Number2CDS274437R0577

Product ID77688

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe ABB S204MR-K50 provides robust protection against overcurrents, ensuring the safety of your electrical system and preventing potential damage.
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2. Efficient DesignWith its compact dimensions (100 mm H x 70 mm W x 71 mm D), this circuit breaker is designed to fit seamlessly into your electrical setup, maximizing space efficiency.
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3. Versatile ApplicationSuitable for a wide range of applications, including residential and commercial settings, this breaker supports frequencies from 50 to 60 Hz, making it versatile for various electrical needs.
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4. High-Quality BuildConstructed with high-quality materials, the ABB S204MR-K50 ensures durability and long-lasting performance, providing you with peace of mind in your electrical infrastructure.

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. Easy InstallationThe IP20 enclosure type ensures that the breaker is protected from dust and other environmental factors, making it easy to install and maintain in various environments.

Rated Current (In)

50 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 1.8 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

2CDS274437R0577