ABB SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 8 A, Type K, Type D, Type C, Type B, 400 V AC, 250 V DC, 10 kA

RS Stock No.:: 177-951
Mfr. Part No.:: 2CCS573001R0084 S403M-C8
Brand:: ABB

ABB SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 8 A, Type K, Type D, Type C, Type B, 400 V AC, 250 V DC, 10 kA

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Subtotal (1 unit)*

£123.70

(exc. VAT)

£148.44

(inc. VAT)

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Shipping from 26 February 2026

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Units	Per unit
1 +	£123.70

*price indicative

RS Stock No.:: 177-951
Mfr. Part No.:: 2CCS573001R0084 S403M-C8
Brand:: ABB

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	ABB
	Number of Poles	3
	Product Type	Miniature Circuit Breaker
	Current Rating	8 A
	Tripping Characteristics	Type K, Type D, Type C, Type B
	Rated AC Voltage	400 V
	Rated DC Voltage	250 V
	Mount Type	DIN Rail
	Breaking Capacity	10kA
	Range	SmiSSline
	Series	S400M
	Standards/Approvals	IEC/EN 60947-2, EN 60898-1
	Depth	75mm
	Width	54 mm
	Reset Actuator Type	Toggle Switch

	Select all
	Brand ABB
	Number of Poles 3
	Product Type Miniature Circuit Breaker
	Current Rating 8 A
	Tripping Characteristics Type K, Type D, Type C, Type B
	Rated AC Voltage 400 V
	Rated DC Voltage 250 V
	Mount Type DIN Rail
	Breaking Capacity 10kA
	Range SmiSSline
	Series S400M
	Standards/Approvals IEC/EN 60947-2, EN 60898-1
	Depth 75mm
	Width 54 mm
	Reset Actuator Type Toggle Switch

COO (Country of Origin):: CH

ABB S400M Series MCB, 3 Poles, 8A Current Rating - S403M-C8

This 3-pole miniature circuit breaker is designed for efficient electrical protection. With a current rating of 8A, it is suitable for both commercial and industrial applications. The breaker features a robust design that can withstand rated AC voltages of 230V and 400V with a breaking capacity of up to 10kA, ensuring reliability under various load conditions.

Features & Benefits

• Type C MCB for effective short circuit protection

• Designed for DIN rail mounting, ensuring easy installation

• Complies with IEC standards for enhanced safety

• Capable of handling up to 10kA breaking capacity

• Integrates screw terminal type for secure connections

Applications

• Suitable for commercial electrical applications requiring protection

• Ideal for industrial settings with high fault current scenarios

• Appropriate for use in critical power applications

Is it compatible with various mounting systems?

It is designed for DIN rail mounting systems.

What type of tripping mechanism does it utilise?

It employs both thermal and electromechanical tripping mechanisms.

What is the energy limiting class of this circuit breaker?

The MCB has an energy limiting class of 3, ensuring high performance during overload.