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Siemens 5SY4103-5 1-Pole Miniature Circuit Breaker — 3A

Siemens 1-pole Miniature Circuit Breaker, 3A, A-curve.

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ManufacturerSiemens

Part number5SY4103-5

Voltage 230/400 V

Breaking Capacity 10 kA

Poles 1

Curve Type A

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1-pole protection 10kA breaking capacity A-curve characteristic Sensitive overcurrent detection Compact 70mm depth Siemens reliability

Product description

The Siemens 5SY4103-5 is a 1-pole miniature circuit breaker engineered for robust electrical protection. It offers a 10kA breaking capacity at 230/400V and is configured with an A-curve for sensitive overcurrent detection. This breaker has a rated current of 3A and a standard installation depth of 70mm.

This circuit breaker is ideal for applications requiring fast response to overcurrents, such as protecting semiconductor devices or specific electronic equipment. It finds use in electronic control systems, instrumentation, and areas where precise fault detection is critical. Industries benefiting from this include specialized manufacturing and high-tech equipment.

Stanlo Automation, a proud veteran-owned distributor, ensures you receive high-quality surplus industrial parts like the Siemens 5SY4103-5. We are dedicated to providing reliable components and exceptional service to support your automation needs.

Technical specifications

Voltage	230/400 V
Breaking Capacity	10 kA
Poles	1
Curve Type	A
Current Rating	3 A
Depth	70 mm
Manufacturer	Siemens

Common applications

Electronic equipment protection

Semiconductor protection

Instrumentation circuits

Control systems

Sensitive load protection

Test equipment

Compatible systems

Electronic control circuits Test and measurement equipment Small appliance protection

Also known as

Siemens 5SY41035 Siemens mini breaker Siemens 3A circuit protector

Replaces / compatible with

Designed to replace or be compatible with Siemens 5SY series breakers and other 1-pole, 3A A-curve miniature circuit breakers.

Technical note

Expert tip

The A-curve of the 5SY4103-5 offers the fastest tripping response among standard MCB curves, making it essential for protecting highly sensitive electronics where even minor overcurrents can cause damage.

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Frequently asked questions

What type of loads is the Siemens 5SY4103-5 circuit breaker best suited for?

The Siemens 5SY4103-5, with its A-curve characteristic, is best suited for protecting sensitive electronic equipment and circuits with very low inrush currents. This curve provides rapid tripping for small overcurrents, ideal for safeguarding delicate components.