S203MT-K1.6UC

Name: S203MT-K1.6UC
Brand: ABB
SKU: S203MT-K1.6UC

The ABB S203MT-K1.6UC miniature circuit breaker is specifically designed for traction and railway applications, providing high short circuit breaking capacity and flexible AC and DC operation. It meets the stringent NF F 16-101/102 standards, ensuring reliable performance and safety in demanding environments.

Product ModelS203MT-K1.6UC

Material Number2CDS273065R0257

Product ID77523

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Short Circuit Breaking CapacityThe S203MT-K1.6UC boasts a high short circuit breaking capacity, ensuring it can handle the most demanding electrical surges in traction and railway applications.
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2. Flexible AC and DC OperationDesigned to operate seamlessly in both AC and DC environments, this circuit breaker provides flexibility and reliability in a wide range of applications.
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3. Compliance with NF F 16-101/102 StandardsCompliant with the French standard NF F 16-101/102, the S203MT-K1.6UC meets the stringent requirements for traction and railway applications, ensuring it is suitable for use in these industries.
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4. Reliable Performance and SafetyWith its robust design and high-quality components, the S203MT-K1.6UC offers reliable performance and safety in demanding electrical environments.

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 60898-1 440 V AC acc. to IEC 60898-1 440 V DC acc. to IEC 60898-1 440 V acc. to IEC 60947-2 440 V AC acc. to IEC 60947-2 440 V DC

Operational Voltage

Maximum (Incl. Tolerance) 462 V AC Maximum (Incl. Tolerance) 500 V DC Minimum 12 V AC Minimum 12 V DC

Rated Insulation Voltage (Ui)

acc. to IEC/EN 60664-1 440 V

Rated Impulse Withstand Voltage (Uimp)

5. Easy Integration with ABB AccessoriesThe S203MT-K1.6UC can be easily integrated with other ABB accessories, making it a simple and flexible solution for your electrical needs in traction and railway applications.

4 kV at 2000 m 5 kV at Sea Level 6.2 kV

Dielectric Test Voltage

50/60 Hz-1 min: 2 kV

Input Voltage Type

AC/DC

Rated Current (In)

1.6 A

Rated Short-Circuit Capacity

(AC) 7.5 kA (DC) 10 kA (230 V AC) 10 kA (400 V AC) 10 kA (230 V) 10 kA (400 V) 10 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(230 V AC) 10 kA (400 V AC) 10 kA (440 V AC) 10 kA (440 V DC) 10 kA (230 V) 10 kA

Rated Conditional Short-Circuit Current (Inc)

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

Rated Service Short-Circuit Breaking Capacity (Ics)

(440 V DC) 10 kA

Rated Frequency (f)

50 / 60 Hz DC

Power Loss

4.86 W at Rated Operating Conditions per Pole 1.62 W

Power Supply Connection

Please Note Polarity of Device

Contact Position Indication

ON / OFF

Energy Limiting Class

Electrical Endurance

1500 DC cycle 20000 AC cycle

Mechanical Endurance

20000 cycle

Number of Protected Poles

Number of Poles

Overvoltage Category

III

Tightening Torque

2.8 NÂ·m

Actuator Type

Toggle

Screw Terminal Type

Failsafe Bi-directional Cylinder-lift Terminal

Actuator Marking

I / O

Actuator Material

Insulation Group II, Black, Sealable

Housing Material

Insulation Group I, RAL 7035

Options Provided

Suitable for traction application

Mounting on DIN Rail

TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715 TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715

Mounting Position

any

Recommended Screw Driver

Pozidriv 2

Accessories Available

Yes

Remarks

Please note polarity of device

Connecting Capacity

Busbar 10 / 10 mmÂ² 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

Installation Size

acc. to DIN 43880 1

Terminal Type

Screw Terminals

Ambient Air Temperature

Operation -25 ... +55 Â°C Storage -40 ... +70 Â°C

Reference Ambient Air Temperature

20 Â°C

Degree of Protection

IP20 IPXXB Enclosure with Cover IP40

Pollution Degree

Environmental Conditions

28 cycles with 55 Â°C / 90-96 % and 25 Â°C / 95-100 %

Resistance to Vibrations

20 Cycles with Load 0.8 In: 5g 5 ... 150 ... 5 Hz

Resistance to Shock acc. to IEC 60068-2-27

25g 2 shocks 13 ms

Maximum Operating Voltage UL/CSA

500 V DC 480Y / 277 V AC

Interrupting Rating acc. to UL1077

(440 V DC) 10 kA

Connecting Capacity UL/CSA

Busbar 14-8 AWG Conductor 14-4 AWG

Tightening Torque UL/CSA

Main Circuit 18 inÂ·lb

Width in Number of Modular Spacings

3.0

Product Net Width

52.5 mm

Product Net Height

88 mm

Product Net Depth / Length

69 mm

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

8536 20 10

UNSPSC

39121603

eClass

V11.0 : 27141901

IDEA Granular Category Code (IGCC)

4897 >> Miniature circuit breakers

Manufacturer ID

2CDS273065R0257