ABB SMISSLINE TP S400M Miniature Circuit Breaker, 1-Pole, 40 A, Type K, Type D, Type C, Type B, 400 V AC, 250 V DC, 50

RS Stock No.:: 177-771
Mfr. Part No.:: 2CCS571001R0404 S401M-C40
Brand:: ABB

ABB SMISSLINE TP S400M Miniature Circuit Breaker, 1-Pole, 40 A, Type K, Type D, Type C, Type B, 400 V AC, 250 V DC, 50

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Subtotal (1 unit)*

£39.31

(exc. VAT)

£47.17

(inc. VAT)

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Shipping from 26 February 2026

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Units	Per unit
1 +	£39.31

*price indicative

RS Stock No.:: 177-771
Mfr. Part No.:: 2CCS571001R0404 S401M-C40
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	1
	Current Rating	40 A
	Tripping Characteristics	Type K, Type D, Type C, Type B
	Rated AC Voltage	400 V
	Rated DC Voltage	250 V
	Breaking Capacity	50kA
	Mount Type	DIN Rail
	Range	SMISSLINE TP
	Series	S400M
	Width	18 mm
	Standards/Approvals	IEC/EN 60947-2, EN 60898-1
	Depth	82mm
	Reset Actuator Type	Toggle Switch

	Select all
	Brand ABB
	Product Type Miniature Circuit Breaker
	Number of Poles 1
	Current Rating 40 A
	Tripping Characteristics Type K, Type D, Type C, Type B
	Rated AC Voltage 400 V
	Rated DC Voltage 250 V
	Breaking Capacity 50kA
	Mount Type DIN Rail
	Range SMISSLINE TP
	Series S400M
	Width 18 mm
	Standards/Approvals IEC/EN 60947-2, EN 60898-1
	Depth 82mm
	Reset Actuator Type Toggle Switch

COO (Country of Origin):: CH

ABB S400M Series MCB, 1 Pole, 40A Current Rating - S401M-C40

This miniature circuit breaker (MCB) is designed for commercial and industrial settings, providing protection with a current rating of 40A and supporting voltages up to 400V AC. It features a compact design with dimensions of 18mm in width, 91mm in length, and 82mm in depth, ensuring reliable operation with advanced thermal and electromechanical tripping mechanisms.

Features & Benefits

• Thermal tripping for effective overload protection

• Electromechanical mechanism for short circuit protection

• High breaking capacity of 10kA for dependable performance

• Complies with IEC/EN 60898-1 standards for safety

Applications

• Suitable for industrial machinery and equipment protection

• Ideal for critical power applications requiring reliable circuits

Can it provide protection against electrical overloads?

Yes, it features thermal tripping for overload protection.

Is it easy to install in existing electrical systems?

Yes, it mounts easily onto DIN rails for quick setup.

Can this device handle different voltage levels?

Yes, it supports both 230V and 400V AC power.