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Siemens 5SY6325-8 Miniature Circuit Breaker - 25A, 3-Pole, D-Curve

Siemens 5SY6325-8 Miniature Circuit Breaker

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ManufacturerSiemens

Part number5SY6325-8

Voltage Rating 400V AC

Current Rating 25A

Poles 3

Breaking Capacity 6kA

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3-pole configuration 6kA breaking capacity D-curve tripping characteristic Designed for high inrush loads DIN rail mounting

Product description

The Siemens 5SY6325-8 is a 3-pole miniature circuit breaker designed for high inrush current applications. It features a D-curve tripping characteristic, a 400V voltage rating, and a 6kA breaking capacity, making it suitable for protecting equipment like large motors, transformers, and welding machines.

This breaker offers robust protection against overloads and short circuits, specifically tailored for loads that draw significant current upon startup. Its D-curve ensures it will not trip prematurely during these high inrush events.

Stanlo Automation, a veteran-owned supplier of quality surplus industrial automation parts, offers the Siemens 5SY6325-8. We provide efficient sourcing and fast delivery to minimize your operational downtime.

Technical specifications

Voltage Rating	400V AC
Current Rating	25A
Poles	3
Breaking Capacity	6kA
Tripping Characteristic	D
Mounting	DIN Rail
Protection	Thermal Magnetic

Common applications

Motor protection

Transformer protection

Welding equipment

Heavy machinery

Industrial control panels

High inrush applications

Compatible systems

Industrial electrical systems with high inrush loads

Also known as

Siemens SENTRON 5SY6325-8 5SY6 Series Circuit Breaker 3P D25A MCB

Replaces / compatible with

Compatible with Siemens 5SY series accessories.

Technical note

Expert tip

The D-curve characteristic of the 5SY6325-8 makes it ideal for protecting equipment with significant inductive loads that cause high inrush currents.

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Frequently asked questions

What is a D-curve circuit breaker used for?

A D-curve circuit breaker is used for loads that have very high inrush currents, typically 10 to 20 times the rated current. This includes equipment like motors, transformers, and X-ray machines, where a standard breaker might trip unnecessarily during startup.