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Siemens 5SY4103-7 1-Pole Miniature Circuit Breaker — 3A

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

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ManufacturerSiemens

Part number5SY4103-7

Voltage 230/400 V

Breaking Capacity 10 kA

Poles 1

Curve Type C

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1-pole protection 10kA breaking capacity C-curve characteristic Suitable for moderate inrush Compact 70mm depth Siemens quality

Product description

The Siemens 5SY4103-7 is a single-pole miniature circuit breaker providing reliable protection for electrical circuits. It operates at 230/400V with a significant 10kA breaking capacity. This model features a C-curve characteristic, a rated current of 3A, and a standard mounting depth of 70mm, making it versatile for various applications.

The C-curve is well-suited for circuits with moderate inrush currents, such as lighting, outlets, and smaller motors. It offers a balance between sensitivity to overloads and tolerance for temporary surges, common in commercial and light industrial environments. Typical applications include building installations and machine control systems.

As a veteran-owned surplus parts distributor, Stanlo Automation provides the Siemens 5SY4103-7 with confidence. We ensure the quality and reliability of our inventory, offering cost-effective solutions to meet your industrial automation needs.

Technical specifications

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

Common applications

Lighting circuits

Outlet circuits

Small motor protection

Commercial buildings

Light industrial machinery

Distribution boards

Compatible systems

General building wiring Small motor applications Lighting distribution

Also known as

Siemens 5SY41037 Siemens 3A MCB Siemens general purpose breaker

Replaces / compatible with

Can replace older Siemens miniature circuit breakers or other brands with equivalent 1-pole, 3A C-curve ratings and dimensions.

Technical note

Expert tip

The C-curve on the 5SY4103-7 allows for a 5 to 10 times the rated current surge for short periods, making it ideal for applications like vending machines or small pump motors.

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Frequently asked questions

What is the typical use case for a Siemens 5SY4103-7 with a C-curve?

The Siemens 5SY4103-7 with its C-curve characteristic is commonly used in commercial and residential applications for circuits that may experience moderate inrush currents. This includes general lighting, power outlets, and protection for smaller motors, where it balances sensitivity to overloads with tolerance for brief surges.