ABB S400, SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16 A, Type B, Type C, Type D, Type K, 400 V AC, 250 V DC

RS Stock No.:: 176-661
Distrelec Article No.:: 304-21-450
Mfr. Part No.:: 2CCS573001R0164 S403M-C16
Brand:: ABB

ABB S400, SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16 A, Type B, Type C, Type D, Type K, 400 V AC, 250 V DC

View all MCBs

Bulk discount available

Subtotal (1 unit)*

$326.66

(exc. GST)

$375.66

(inc. GST)

FREE delivery for orders over $60.00 ex GST

In Stock

Plus 2 unit(s) shipping from 26 January 2026

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

Units	Per unit
1 - 9	$326.66
10 - 49	$318.64
50 +	$307.10

*price indicative

RS Stock No.:: 176-661
Distrelec Article No.:: 304-21-450
Mfr. Part No.:: 2CCS573001R0164 S403M-C16
Brand:: 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
	Number of Poles	3
	Product Type	Miniature Circuit Breaker
	Current Rating	16 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
	Range	S400, SmiSSline
	Series	S400M
	Width	54 mm
	Standards/Approvals	EN 60898-1, IEC/EN 60947-2
	Depth	82mm
	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 B, Type C, Type D, Type K
	Rated AC Voltage 400 V
	Rated DC Voltage 250 V
	Mount Type DIN Rail
	Range S400, SmiSSline
	Series S400M
	Width 54 mm
	Standards/Approvals EN 60898-1, IEC/EN 60947-2
	Depth 82mm
	Reset Actuator Type Toggle Switch

COO (Country of Origin):: CH

ABB S400M Series MCB, 3 Poles, 16A Current Rating - S403M-C16

This miniature circuit breaker offers a compact solution for electrical circuit protection. Designed for both commercial and industrial applications, this 3-pole device supports a current rating of 16A and features robust dimensions of 54mm in width, 91mm in length, and 82mm in depth. It ensures safety by utilising two distinct tripping mechanisms: a delayed thermal mechanism for overload protection and an electromechanical mechanism for short circuit protection. The device is compliant with relevant IEC standards, ensuring reliability in critical power situations.

Features & Benefits

• Type C circuit breaker provides effective short circuit protection

• 10kA MCB breaking capacity ensures reliable disconnection

• Screw terminal design enables secure electrical connections

• DIN rail mountable for easy installation in control panels

Applications

• Utilised in commercial electrical systems for load management

• Applied in critical power setups requiring reliable protection

Will it work with different voltage ratings?

It is rated for both 230V and 400V AC applications.