S203M-K2DC

Name: S203M-K2DC
Brand: ABB
SKU: S203M-K2DC

The ABB S203M-K2DC is a versatile miniature circuit breaker designed for both DC and AC applications. It features advanced tripping mechanisms for overload and short circuit protection, ensuring reliable electrical safety in residential, commercial, and industrial settings.

Product ModelS203M-K2DC

Material Number2TAZ112300R0277

Product ID79824

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Advanced Tripping MechanismsThe S203M-K2DC boasts two distinct tripping mechanisms: delayed thermal tripping for overload protection and electromechanical tripping for short circuit protection, ensuring comprehensive electrical safety.
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2. High Breaking CapacitiesWith breaking capacities up to 10 kA at 230/400 V AC, this MCB provides robust protection against electrical surges and faults.
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3. Versatile ApplicationSuitable for both DC and AC applications, making it a versatile solution for a wide range of electrical systems.
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4. Compliance with International StandardsAll MCBs in the S200M range comply with IEC/EN 60898-1 and IEC/EN 60947-2, ensuring compliance with international safety standards.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Standards

IEC/EN 60947-2 GB 14048

Tripping Characteristic

Rated Voltage (Ur)

440 V

Rated Operational Voltage

440 V DC

Rated Insulation Voltage (Ui)

440 V

Rated Impulse Withstand Voltage (Uimp)

4 kV

5. Compact DesignThe compact design of the S203M-K2DC allows for efficient use of space, making it ideal for installations where space is limited. The bottom-fitting auxiliary contact can be mounted to save up to 50% space.

Rated Current (In)

2 A

Rated Short-Circuit Capacity

(400 V) 10 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(440 V DC) 10 kA

Rated Conditional Short-Circuit Current (Inc)

(400 V) 10 kA

Frequency (f)

0...0 Hz

Rated Frequency (f)

0-0 Hz

Power Loss

5.34 W

Energy Limiting Class

Number of Protected Poles

Number of Poles

Overvoltage Category

III

Release Type

Options Provided

DC application

Accessories Available

Yes

Connecting Capacity

Flexible 0 ... 25 mmÂ² Rigid 0 ... 35 mmÂ²

Ambient Temperature

-25...55 Â°C

Ambient Air Temperature

Operation -25...55 Â°C

Degree of Protection

IP20

Pollution Degree

Width in Number of Modular Spacings

Product Net Width

0.053 m

Product Net Height

0.088 m

Product Net Depth / Length

0.044 m

Product Net Weight

0.375 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

85362010

eClass

V11.0 : 27141901

Object Classification Code

Manufacturer ID

2TAZ112300R0277