ABB SMISSLINE TP S400M Miniature Circuit Breaker, 3-Pole, 20 A, Type C, Type D, Type K, Type B, 400 V AC, 250 V DC, 10

RS Stock No.:: 178-112
Mfr. Part No.:: 2CCS573001R0204 S403M-C20
Brand:: ABB

ABB SMISSLINE TP S400M Miniature Circuit Breaker, 3-Pole, 20 A, Type C, Type D, Type K, Type B, 400 V AC, 250 V DC, 10

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Subtotal (1 unit)*

£104.86

(exc. VAT)

£125.83

(inc. VAT)

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In Stock

Plus 1 unit(s) shipping from 09 February 2026

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Units	Per unit
1 +	£104.86

*price indicative

RS Stock No.:: 178-112
Mfr. Part No.:: 2CCS573001R0204 S403M-C20
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
	Product Type	Miniature Circuit Breaker
	Number of Poles	3
	Current Rating	20 A
	Tripping Characteristics	Type C, Type D, Type K, Type B
	Rated AC Voltage	400 V
	Rated DC Voltage	250 V
	Mount Type	DIN Rail
	Breaking Capacity	10kA
	Range	SMISSLINE TP
	Series	S400M
	Width	54 mm
	Depth	82mm
	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 3
	Current Rating 20 A
	Tripping Characteristics Type C, Type D, Type K, Type B
	Rated AC Voltage 400 V
	Rated DC Voltage 250 V
	Mount Type DIN Rail
	Breaking Capacity 10kA
	Range SMISSLINE TP
	Series S400M
	Width 54 mm
	Depth 82mm
	Standards/Approvals EN 60898-1, IEC/EN 60947-2
	Reset Actuator Type Toggle Switch

COO (Country of Origin):: CH

ABB S400M Series MCB, 3 Poles, 20A Current Rating - S403M-C20

This miniature circuit breaker offers protection for commercial and industrial applications. With a width of 54mm, a length of 91mm, and a depth of 82mm, it is designed for easy installation on a DIN rail. The device features a tripping characteristic classified as Type C, which provides protection against overload and short circuits, enhancing safety in electrical systems. With compliance to IEC standards, its modular form allows for versatile installation, ensuring that both performance and safety are optimally maintained.

Features & Benefits

• Thermal tripping mechanism for overload protection

• Electromechanic tripping for prompt short circuit response

• Rated current of 20A supports high power applications

• Breaking capacity up to 10kA ensures effective fault clearance

• Screw terminals allow for secure and stable connections

Applications

• Effective for critical power applications requiring reliability

• Utilised in environments with varying load conditions

Can it handle short circuit protection effectively?

Yes, it uses an electromechanic mechanism for fast response.

Will it provide adequate protection in industrial environments?

Yes, it is suitable for diverse industrial applications.

Can it be used with different voltage ratings?

Yes, it is rated for 230V and 400V power systems.