ABB SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16 A, Type K, Type D, Type C, Type B, 400 V AC, 250 V DC, 10 kA

RS Stock No.:: 177-579
Mfr. Part No.:: 2CCS573001R0165 S403M-B16
Brand:: ABB

ABB SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16 A, Type K, Type D, Type C, Type B, 400 V AC, 250 V DC, 10 kA

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Subtotal (1 unit)*

£87.02

(exc. VAT)

£104.42

(inc. VAT)

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Shipping from 26 February 2026

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Units	Per unit
1 +	£87.02

*price indicative

RS Stock No.:: 177-579
Mfr. Part No.:: 2CCS573001R0165 S403M-B16
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	16 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
	Width	54 mm
	Depth	82mm
	Standards/Approvals	IEC/EN 60947-2, EN 60898-1
	Reset Actuator Type	Toggle Switch

	Select all
	Brand ABB
	Number of Poles 3
	Product Type Miniature Circuit Breaker
	Current Rating 16 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
	Width 54 mm
	Depth 82mm
	Standards/Approvals IEC/EN 60947-2, EN 60898-1
	Reset Actuator Type Toggle Switch

COO (Country of Origin):: CH

ABB S400M Series MCB, 3 Poles, 16A Current Rating - S403M-B16

This miniature circuit breaker (MCB) provides efficient electrical circuit protection in commercial and industrial settings. It features a current rating of 16A and compact dimensions of 54mm in width, 91mm in length, and 82mm in depth. With a high breaking capacity, this MCB ensures reliable operation under various electrical conditions.

Features & Benefits

• 10kA breaking capacity provides high short-circuit protection

• Thermal tripping mechanism safeguards against overloads

• DIN rail mounted design simplifies installation and saves space

• Screw terminal type ensures secure and reliable connections

Applications

• Applied in small industrial control panels to protect circuits for equipment such as motors and fans

• Employed in HVAC systems to ensure protection for circuits managing heating, ventilation, and air conditioning units

Can it handle high voltage fluctuations?

Yes, it operates at rated AC voltages of 230V and 400V.

Can the tripping mechanisms be adjusted?

No, it comes with fixed thermal and electromechanical tripping mechanisms.