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Siemens 5SP4280-7 2-Pole Miniature Circuit Breaker, Type C

Siemens 5SP4280-7 2-pole Type C Miniature Circuit Breaker.

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ManufacturerSiemens

Part number5SP4280-7

Poles 2

Type C

Rated current (In) 80 A

Rated breaking capacity (Icn) 10 kA

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2-pole design Type C tripping characteristic 80A current rating 10kA breaking capacity 400V AC operational voltage DIN rail mountable

Product description

The Siemens 5SP4280-7 is a 2-pole Miniature Circuit Breaker (MCB) designed for reliable overcurrent protection. It features a Type C tripping characteristic, a rated current of 80 A, a rated breaking capacity of 10 kA, and an operational voltage of 400 V AC. This MCB provides protection against short circuits and overloads, safeguarding electrical installations and equipment.

With its Type C characteristic, this MCB is suitable for circuits with moderate inrush currents, such as those found in lighting systems and socket outlets. Its 2-pole design ensures disconnection of both live and neutral conductors simultaneously. The compact design with a width of 70 mm (D=70 mm) allows for efficient use of space in distribution panels.

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Technical specifications

Poles	2
Type	C
Rated current (In)	80 A
Rated breaking capacity (Icn)	10 kA
Rated operational voltage (Un AC)	400 V
Frequency	50/60 Hz
Width	70 mm
Mounting	DIN rail

Common applications

Residential circuit protection

Commercial electrical panels

Industrial machinery

Lighting circuits

Socket outlets

Distribution boards

Compatible systems

Standard DIN rail mounting AC power distribution systems

Also known as

Siemens 5SP4280-7 MCB Siemens 80A 2P Type C breaker Siemens 400V miniature breaker

Replaces / compatible with

This 2-pole, Type C MCB is designed for general-purpose circuit protection and can replace older Siemens or compatible 2-pole MCBs with similar voltage, current, and breaking capacity ratings.

Technical note

Expert tip

For applications with higher inrush currents, such as those involving large motors, a Type D MCB might be more appropriate than this Type C. Always consult the specific application requirements.

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Frequently asked questions

What does the 'Type C' tripping characteristic mean for the Siemens 5SP4280-7?

The 'Type C' tripping characteristic of the Siemens 5SP4280-7 MCB indicates that it is designed to trip when the current reaches 5 to 10 times the rated current (80A). This makes it suitable for circuits that may experience moderate inrush currents, such as those powering inductive loads or motors, without nuisance tripping, while still providing protection against short circuits.