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Siemens 5SX2 302-8 Circuit Breaker - 3-Pole, 2A

Name: Siemens 5SX2 302-8
Brand: Siemens
SKU: 5SX2 302-8
Availability: InStock

Siemens 5SX2 302-8 3-Pole Circuit Breaker

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ManufacturerSiemens

Part number5SX2 302-8

Poles 3

Current Rating 2A

Voltage 400V

Breaking Capacity 6kA

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3-pole configuration Type D tripping characteristic 6kA interrupting capacity 400V operational voltage Protection for inductive loads High inrush current handling

Product description

The Siemens 5SX2 302-8 is a 3-pole miniature circuit breaker designed for robust protection in 400V systems. It features a Type D tripping characteristic, a 6kA breaking capacity, and is rated for 2A, making it suitable for circuits with high inrush currents.

This breaker is ideal for applications such as protecting three-phase motors, transformers, and other inductive loads that experience significant current surges upon startup. The 6kA rating ensures safety against severe short-circuit conditions.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 5SX2 302-8. We are dedicated to providing reliable, quality components to keep your industrial operations running efficiently. Source your essential parts from Stanlo Automation.

Technical specifications

Poles	3
Current Rating	2A
Voltage	400V
Breaking Capacity	6kA
Tripping Curve	D
Series	5SX2

Common applications

Three-phase motor protection

Transformer circuits

Inductive loads

Industrial control panels

Power distribution

Automation systems

Compatible systems

3-phase power systems Standard DIN rail mounting Industrial control cabinets

Also known as

Siemens 5SX2 3-pole breaker 400V 2A Siemens MCB 5SX2 302-8 D-curve

Replaces / compatible with

The Siemens 5SX2 302-8 is a current generation miniature circuit breaker suitable for replacing older 3-pole breakers with similar voltage, current, and breaking capacity ratings. It meets modern safety standards.

Technical note

Expert tip

When installing the Siemens 5SX2 302-8, ensure all three poles are connected to the load to maintain proper phase balance and protection.

What happens next?

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Frequently asked questions

Why is the Type D tripping curve important for the Siemens 5SX2 302-8?

The Type D tripping curve on the Siemens 5SX2 302-8 is crucial for applications with high inrush currents, such as three-phase motors. It allows for a higher momentary surge of current (typically 10-20 times the rated current) without tripping, preventing nuisance shutdowns while still providing protection against severe short circuits.