S203MT-B16UC

Name: S203MT-B16UC
Brand: ABB
SKU: S203MT-B16UC

"ABB S203M-B16UC: A 3P miniature circuit breaker designed for DC and AC applications, featuring high short-circuit breaking capacity and compliance with major international standards."

Product ModelS203MT-B16UC

Material Number2CDS273065R0165

Product ID110568

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Short-Circuit Breaking Capacity\"The S203M-B16UC boasts a high inbuilt short-circuit breaking capacity, ensuring reliable operation in various electrical applications.\"
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2. Flexible AC and DC Application\"Designed for both DC and AC applications, this circuit breaker offers flexibility in a wide range of electrical systems.\"
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3. Compliance with Major International Standards\"Compliant with IEC/EN 60898-1 and IEC/EN 60947-2, ensuring safety and reliability in your electrical installations.\"
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4. Easy Integration with System pro M Compact Accessories\"All current System pro M compact accessories can be easily combined with the S203M-B16UC, simplifying your installation and maintenance processes.\"

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

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. Robust Design and Environmental Durability\"Built with a robust design, the S203M-B16UC withstands various environmental conditions, including ambient temperatures up to 30°C and IP20/IP40 enclosures.\"

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)

16 A

Rated Short-Circuit Capacity

(AC) 10 kA (230 V AC) 10 kA (253 V AC) 10 kA (400 V AC) 10 kA (440 V DC) 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

7.41 W at Rated Operating Conditions per Pole 2.47 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

30 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

Interrupting Rating acc. to UL1077

(440 V DC) 10 kA

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

2CDS273065R0165