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Siemens 5SY4350-8 3-Pole Miniature Circuit Breaker - 50A

Siemens 5SY4350-8 3-pole Miniature Circuit Breaker, 50A.

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ManufacturerSiemens

Part number5SY4350-8

Voltage 400V AC

Current 50A

Poles 3

Breaking Capacity 10kA

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Veteran-owned

CAGE: 9NK75

3-pole protection D-curve tripping characteristic 10kA breaking capacity DIN rail mountable High inrush current handling

Product description

The Siemens 5SY4350-8 is a 3-pole miniature circuit breaker (MCB) designed for high-performance protection in demanding applications. It offers a 400V voltage rating, a 10kA breaking capacity, and a D-curve tripping characteristic, making it ideal for loads with high inrush currents such as motors and transformers.

This breaker is suitable for industrial environments and specialized automation systems where robust protection against overloads and short circuits is critical. The D-curve ensures that the breaker will not trip unnecessarily during startup of inductive loads, providing reliable operation.

Stanlo Automation, your veteran-owned source for surplus industrial parts, provides the Siemens 5SY4350-8. We pride ourselves on quality, reliability, and customer satisfaction, ensuring you get the parts you need, when you need them.

Technical specifications

Voltage	400V AC
Current	50A
Poles	3
Breaking Capacity	10kA
Tripping Characteristic	D
Mounting	DIN Rail
Protection Class	IP20

Common applications

Industrial Automation

Motor Control

Transformer Protection

High Inrush Loads

Specialized Equipment

Compatible systems

Siemens SENTRON 5SY Series

Also known as

Siemens 5SY4 MCB 5SY4350-8 CB Siemens 50A D-curve Breaker

Replaces / compatible with

Compatible with Siemens 5SY4 series accessories and related components.

Technical note

Expert tip

The 5SY4350-8's D-curve characteristic has a magnetic trip point typically between 10 to 20 times the rated current, accommodating high starting currents.

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Frequently asked questions

When is the D-curve characteristic of the Siemens 5SY4350-8 most beneficial?

The D-curve characteristic of the Siemens 5SY4350-8 is most beneficial for applications with high inrush currents, such as motor starting or transformer energization. It allows for these temporary surges without causing nuisance tripping, while still providing protection against sustained overloads and short circuits.