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Siemens 5SY8310-8 Miniature Circuit Breaker - 3-Pole, D10, 400V

Siemens 5SY8310-8 miniature circuit breaker, 3-pole, D10, 400V.

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ManufacturerSiemens

Part number5SY8310-8

Poles 3

Rated Current 10A

Breaking Capacity 25kA

Voltage 400V

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Three-pole configuration D-curve tripping characteristic High inrush current capability 25kA breaking capacity 400V rating Complies with EN 60947-2

Product description

The Siemens 5SY8310-8 is a three-pole miniature circuit breaker designed for AC applications up to 400V. It features a D-curve tripping characteristic, making it ideal for circuits with high inrush currents like those from transformers or large motors. This breaker has a rated current of 10A and a breaking capacity of 25kA, compliant with EN 60947-2. It features a standard 70mm width.

This 3-pole D-curve breaker is commonly employed in industrial environments to protect circuits with significant inductive loads. Applications include power transformers, motor control circuits, and other equipment that experiences high transient currents during startup.

Stanlo Automation, your veteran-owned surplus parts distributor, offers the Siemens 5SY8310-8. We specialize in providing reliable and cost-effective automation components to keep your systems operational.

Technical specifications

Poles	3
Rated Current	10A
Breaking Capacity	25kA
Voltage	400V
Curve	D (D10)
Width	70mm
Standard	EN 60947-2

Common applications

Transformer protection

Motor starting circuits

Industrial power distribution

High inductive load circuits

Control panels

Power supplies

Compatible systems

Industrial control panels Siemens power distribution systems Motor starting circuits

Also known as

Siemens 5SY8310-8 MCB Siemens 3 Pole D10 Breaker Siemens 10A D-Curve 400V Breaker

Replaces / compatible with

This 3-pole D-curve breaker is suitable for replacing similar breakers in industrial applications requiring protection against high inrush currents, such as motor starting or transformer circuits.

Technical note

Expert tip

The Siemens 5SY8310-8's D-curve is specifically designed to withstand the high starting currents of motors and transformers without tripping, ensuring continuous operation for these loads.

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Frequently asked questions

When is a D-curve circuit breaker like the Siemens 5SY8310-8 recommended?

A D-curve breaker, such as the Siemens 5SY8310-8, is recommended for circuits with high inrush currents. This includes equipment like large motors during startup, transformers, or solenoid banks, where the temporary surge of current is significantly higher than the normal operating current.