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

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

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

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Subtotal (1 unit)*

€40.64

(exc. VAT)

€49.99

(inc. VAT)

Stocked by manufacturer

Ready to ship from 04 May 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit
1 +	€40.64

*price indicative

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

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

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

	Select all
	Brand ABB
	Product Type Miniature Circuit Breaker
	Number of Poles 1
	Current Rating 8A
	Tripping Characteristics Type B, Type C, Type D, Type K
	Rated AC Voltage 400V ac
	Rated DC Voltage 250V dc
	Mount Type DIN Rail
	Breaking Capacity 10kA
	Range S400, SmiSSline
	Series S400M
	Width 18mm
	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.