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Siemens 5SY4280-6 2-Pole Miniature Circuit Breaker β€” 80A

Siemens 5SY4280-6 2-pole miniature circuit breaker.

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ManufacturerSiemens
Part number5SY4280-6
Type Miniature Circuit Breaker
Manufacturer Siemens
Part Number 5SY4280-6
Poles 2
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2-pole protection 400V rated 10kA breaking capacity B-curve tripping 80A current rating 70mm depth

The Siemens 5SY4280-6 is a robust 2-pole miniature circuit breaker designed for essential electrical circuit protection. It features a 400V operating voltage and a 10kA breaking capacity, with a B-curve tripping characteristic suitable for resistive loads and sensitive electronics. This breaker is rated for 80A and has a standard depth of 70mm.

Ideal for applications requiring quick tripping for lower inrush currents, such as residential wiring, small motor starting, and protecting sensitive electronic equipment. Its reliable performance ensures safety and prevents damage from overloads and short circuits in various industrial and commercial settings.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 5SY4280-6. We provide access to high-quality, competitively priced industrial components, ensuring your operational needs are met with efficiency and reliability.

TypeMiniature Circuit Breaker
ManufacturerSiemens
Part Number5SY4280-6
Poles2
Rated Voltage400V
Breaking Capacity10kA
Current Rating80A
Trip CurveB
Depth70 mm
Residential electrical panels
Small motor circuits
Sensitive electronic protection
Lighting circuits
Commercial installations
Machine wiring
Suitable for standard Siemens distribution systems and enclosures.
Siemens 5SY4280-6 MCB Siemens 80A 2-pole breaker 5SY42806
This part belongs to the Siemens 5SY4 series and is interchangeable with other 5SY4 breakers of similar specifications. It is compatible with Siemens switchgear accessories.
Expert tip
The B-curve characteristic of the 5SY4280-6 provides protection for circuits where the inrush current is typically not more than 3 to 5 times the rated current.
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When is the Siemens 5SY4280-6 B-curve breaker recommended?
The Siemens 5SY4280-6 with a B-curve is recommended for circuits with low inrush currents, such as resistive loads, lighting, and the protection of sensitive electronic devices. It offers a faster trip response for lower fault currents compared to C-curve breakers.