ABB S400, SmiSSline S400M Miniature Circuit Breaker, 1-Pole, 8 A, Type B, Type C, Type D, Type K, 400 V AC, 250 V DC, 10

RS Stock No.:: 176-239
Mfr. Part No.:: 2CCS571001R0084 S401M-C8
Brand:: ABB

ABB S400, SmiSSline S400M Miniature Circuit Breaker, 1-Pole, 8 A, Type B, Type C, Type D, Type K, 400 V AC, 250 V DC, 10

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Subtotal (1 unit)*

£33.87

(exc. VAT)

£40.64

(inc. VAT)

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Shipping from 26 February 2026

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Units	Per unit
1 +	£33.87

*price indicative

RS Stock No.:: 176-239
Mfr. Part No.:: 2CCS571001R0084 S401M-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	1
	Product Type	Miniature Circuit Breaker
	Current Rating	8 A
	Tripping Characteristics	Type B, Type C, Type D, Type K
	Rated AC Voltage	400 V
	Rated DC Voltage	250 V
	Mount Type	DIN Rail
	Breaking Capacity	10kA
	Range	S400, SmiSSline
	Series	S400M
	Width	18 mm
	Depth	75mm
	Standards/Approvals	EN 60898-1, IEC/EN 60947-2
	Reset Actuator Type	Toggle Switch

	Select all
	Brand ABB
	Number of Poles 1
	Product Type Miniature Circuit Breaker
	Current Rating 8 A
	Tripping Characteristics Type B, Type C, Type D, Type K
	Rated AC Voltage 400 V
	Rated DC Voltage 250 V
	Mount Type DIN Rail
	Breaking Capacity 10kA
	Range S400, SmiSSline
	Series S400M
	Width 18 mm
	Depth 75mm
	Standards/Approvals EN 60898-1, IEC/EN 60947-2
	Reset Actuator Type Toggle Switch

COO (Country of Origin):: CH

ABB S400M Series MCB, 1 Pole, 8A Current Rating - S401M-C8

This miniature circuit breaker (MCB) provides protection for electrical circuits in both commercial and industrial environments. Designed for DIN rail mounting, it features a width of 18mm and a length of 91mm. The MCB is equipped with thermal tripping and electromechanical mechanisms for effective overload and short-circuit protection, ensuring the safety and longevity of your electrical installations.

Features & Benefits

• Type C circuit breaker for standard overload protection

• 1 pole design suitable for single-phase systems

• Breaking capacity of 10kA at maximum voltage ratings

• Thermal tripping mechanism ensures fast response

Applications

• Utilised in lighting panels to protect circuits driving high-intensity discharge lamps and LED arrays

• Employed in distribution boards for large machinery to ensure reliable circuit protection and fault management

Is it easy to install?

Yes, it is designed for simple DIN rail mounting.

Can it be used in environments with varying temperatures?

It operates effectively between -25°C and 60°C.