S204-B40

Name: S204-B40
Brand: ABB
SKU: S204-B40

ABB S204-B40: Reliable miniature circuit breaker with failsafe bi-directional terminal, high interrupting ratings, and compliance with IEC/EN 60898-1 and UL 1077 standards. Suitable for residential, commercial, and industrial applications.

Product ModelS204-B40

Material Number2CDS254001R0405

Product ID79883

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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Feature1. Reliable Protection The ABB S204-B40 offers robust protection against overcurrents and short circuits, ensuring the safety of your electrical system. Its high interrupting ratings of 6 kA (DC) and 10 kA make it reliable in various applications.
2
Feature2. Compliance with International Standards The product complies with IEC/EN 60898-1 and UL 1077 standards, ensuring it meets the highest safety and performance requirements. This makes it suitable for use in residential, commercial, and industrial settings.
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Feature3. Easy Installation The S204-B40 features a failsafe bi-directional cylinder-lift terminal, which simplifies the installation process. This terminal type prevents errors and ensures secure connections, reducing the risk of industrial accidents.
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Feature4. Versatile Application Designed for DC and AC applications, the S204-B40 is a versatile solution for various electrical needs. Its flexibility in mounting positions and compatibility with different busbar sizes make it an ideal choice for diverse installations.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Standards

IEC/EN 60898-1 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 60947-2 440 V AC

Operational Voltage

Maximum (Incl. Tolerance) 440 V AC 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)

Feature5. High Performance and Durability With a rated current of 40 A and a power loss of 19.2 W at rated operating conditions, the S204-B40 provides efficient performance. Its mechanical endurance of 20,000 cycles and electrical endurance of 10,000 AC cycles ensure long-lasting reliability.

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)

40 A

Rated Short-Circuit Capacity

(AC) 6 kA (DC) 6 kA (400 V AC) 6 kA (400 V) 6 kA

Rated Ultimate Short-Circuit Breaking Capacity (Icu)

(230 V AC) 20 kA (400 V AC) 10 kA (440 V AC) 10 kA (230 V) 20 kA (400 V) 10 kA

Rated Conditional Short-Circuit Current (Inc)

(230 V) 20 kA (400 V) 20 kA

Rated Service Short-Circuit Breaking Capacity (Ics)

(230 V AC) 15 kA (400 V AC) 7.5 kA (440 V AC) 7.5 kA

Frequency (f)

50 Hz

Rated Frequency (f)

50 / 60 Hz

Power Loss

19.2 W at Rated Operating Conditions per Pole 4.8 W

Power Supply Connection

Arbitrary

Contact Position Indication

Red ON / Green OFF

Energy Limiting Class

Electrical Endurance

10000 AC cycle

Mechanical Endurance

20000 cycle

Number of Protected Poles

Number of Poles

Overvoltage Category

III

Tightening Torque

2.8 NÂ·m

Mounting Type

DIN-Rail

Screw Terminal Type

Failsafe Bi-directional Cylinder-lift Terminal

Actuator Marking

I / O

Actuator Material

Insulation Group II, Black, Sealable

Housing Material

Insulation Group II, RAL 7035

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

Connecting Capacity

Busbar 10 / 10 mmÂ² Flexible with Ferrule 0.75 ... 25 mmÂ² Flexible 0.75 ... 25 mmÂ² Rigid 0.75 ... 35 mmÂ² Rigid 0.75 ... 35 mmÂ² Stranded 0.75 ... 35 mmÂ²

Installation Size

acc. to DIN 43880 1

Wire Stripping Length

12.5 mm

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 IP40 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

110 V DC 480Y/277 V AC

Interrupting Rating acc. to UL1077

(277 V AC) 6 kA (480Y / 277 V AC) 6 kA (240 V) 10 kA

Connecting Capacity UL/CSA

Busbar 18-8 AWG Conductor 18-4 AWG

Tightening Torque UL/CSA

18 inÂ·lb

Width in Number of Modular Spacings

4.0

Product Net Width

70 mm

Product Net Height

88 mm

Product Net Depth / Length

69 mm

Product Net Weight

0.5 kg

Pole Net Weight

0.125 kg

Built-In Depth (t2)

69 mm

Dimension Diagram

2CDC022007F0010

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

Object Classification Code

Manufacturer ID

2CDS254001R0405