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Siemens 5SY4101-5 Miniature Circuit Breaker - 1A, Type A

Siemens 5SY4101-5 Miniature Circuit Breaker, 1A, Type A

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ManufacturerSiemens

Part number5SY4101-5

Poles 1

Current Rating 1A

Tripping Characteristic A

Voltage 230/400V AC

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CAGE: 9NK75

UL 1077 Supplementary Protector Type A tripping curve for sensitive circuits Delayed thermal release Instantaneous electromagnetic release High degree of protection against contact welding DIN rail mountable

Product description

The Siemens 5SY4101-5 is a single-pole miniature circuit breaker designed for supplementary protection, offering enhanced safety for sensitive electrical equipment. It features a Type A tripping characteristic, specifically designed to protect highly sensitive circuits, including those with semiconductors. This breaker has a 1A current rating and a breaking capacity of 6kA at 400V. It operates on a 230/400V AC system. This circuit breaker is ideal for applications requiring fast-acting protection against overcurrents, such as in control transformers, power supplies, or sensitive electronic devices. It is commonly used in industrial automation, machine building, and control systems where precise fault detection is critical. As a veteran-owned surplus parts distributor, Stanlo Automation offers the Siemens 5SY4101-5. We provide reliable, quality components at competitive prices, ensuring your industrial automation needs are met with efficiency and expertise.

Technical specifications

Poles	1
Current Rating	1A
Tripping Characteristic	A
Voltage	230/400V AC
Breaking Capacity	6kA@400V or 10kA
Series	5SY4
Mounting	DIN Rail

Common applications

Sensitive Electronic Circuits

Semiconductor Protection

Control Transformers

Power Supplies

Industrial Automation

Machine Control

Compatible systems

Industrial control panels, automation systems

Also known as

Siemens SENTRON 5SY4101-5 5SY41015 Siemens Miniature Circuit Breaker

Replaces / compatible with

This is a Siemens SENTRON 5SY4 series miniature circuit breaker.

Technical note

Expert tip

The magnetic trip point for the Type A characteristic on this breaker is typically 2-3 times the rated current, while the thermal trip point is 1.13-1.45 times the rated current.

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Frequently asked questions

What makes the Siemens 5SY4101-5 suitable for semiconductor protection?

The Siemens 5SY4101-5 features a Type A tripping characteristic. This curve is designed for extremely sensitive circuits, providing rapid tripping in response to low overcurrents, which is crucial for protecting delicate semiconductor components from damage.