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Siemens 5SY5105-7 Miniature Circuit Breaker — 1-Pole, 0.5A, C-Curve

Siemens 5SY5105-7 Miniature Circuit Breaker: 1-pole, C-curve, 0.5A.

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ManufacturerSiemens

Part number5SY5105-7

Manufacturer Siemens

Part Number 5SY5105-7

Type Miniature Circuit Breaker

Poles 1

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CAGE: 9NK75

1-pole configuration C-curve tripping characteristic 10kA interrupting capacity Suitable for AC and DC circuits Precise protection for low-power loads DIN rail mounting

Product description

The Siemens 5SY5105-7 is a 1-pole miniature circuit breaker designed for sensitive circuits requiring precise overcurrent protection. It features a C-curve tripping characteristic, providing reliable protection against overloads and short circuits with a 10kA breaking capacity across 230/400V AC and 220V DC.

This low-amperage breaker is ideal for protecting control circuits, instrumentation, and low-power electronic devices where a high degree of sensitivity is required. It is commonly found in control panels, telecommunications equipment, and specialized industrial machinery.

As a veteran-owned surplus parts distributor, Stanlo Automation is dedicated to providing high-quality, cost-effective automation components like the Siemens 5SY5105-7. We ensure that our surplus inventory is thoroughly inspected, offering a reliable and economical solution for your MRO needs.

Technical specifications

Manufacturer	Siemens
Part Number	5SY5105-7
Type	Miniature Circuit Breaker
Poles	1
Tripping Curve	C
Rated Current	0.5A
Rated Voltage AC	230/400V
Rated Voltage DC	220V
Breaking Capacity	10kA

Common applications

Control circuits

Instrumentation circuits

Telecommunications equipment

Low-power electronic devices

sensitive machine protection

Compatible systems

General purpose use in AC and DC distribution systems

Also known as

Siemens 5SY series 0.5A breaker 5SY5105-7 MCB Siemens circuit breaker 0.5 Amp Siemens 10kA C-curve breaker

Replaces / compatible with

This circuit breaker is part of the Siemens 5SY series and is designed to replace older or equivalent Siemens circuit breakers with similar specifications.

Technical note

Expert tip

This breaker is ideal for protecting sensitive control circuits where precise fault detection is critical and nuisance tripping must be avoided.

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Frequently asked questions

What makes the Siemens 5SY5105-7 suitable for protecting sensitive electronic devices?

The Siemens 5SY5105-7, with its 0.5A rating and C-curve tripping characteristic, offers precise protection against overloads and short circuits. Its sensitivity allows it to react quickly to fault currents without being overly susceptible to minor transient surges common in electronic circuits.