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Siemens 5SY4302-6 3-Pole Miniature Circuit Breaker — 2A

Siemens 5SY4302-6 3-pole miniature circuit breaker.

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ManufacturerSiemens

Part number5SY4302-6

Type Miniature Circuit Breaker

Manufacturer Siemens

Part Number 5SY4302-6

Poles 3

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3-pole protection 400V AC rated 10kA breaking capacity B-curve tripping 2A current rating 70mm depth

Product description

The Siemens 5SY4302-6 is a 3-pole miniature circuit breaker designed for reliable protection in three-phase electrical systems. It operates at 400V AC with a 10kA breaking capacity and features a B-curve tripping characteristic, ideal for resistive loads and circuits with low inrush currents. This breaker is rated for 2A and has a 70mm depth.

This 2A, 3-pole breaker with a B-curve is well-suited for protecting sensitive electronic equipment, control circuits, and lighting systems in three-phase applications where quick response to overcurrent is critical. It ensures safety and operational continuity in industrial and commercial environments.

Source your Siemens 5SY4302-6 from Stanlo Automation, a veteran-owned surplus parts distributor. We offer quality industrial components at competitive prices, backed by our commitment to reliable service and prompt delivery.

Technical specifications

Type	Miniature Circuit Breaker
Manufacturer	Siemens
Part Number	5SY4302-6
Poles	3
Rated Voltage	400V AC
Breaking Capacity	10kA
Current Rating	2A
Trip Curve	B
Depth	70 mm

Common applications

Control circuits

Electronic equipment protection

Lighting circuits

Three-phase distribution

Automation systems

Sensitive load protection

Compatible systems

Designed for compatibility with Siemens modular DIN rail mounting systems.

Also known as

Siemens 5SY4302-6 MCB Siemens 2A 3-pole breaker 5SY43026

Replaces / compatible with

This 5SY4302-6 breaker is part of the Siemens 5SY4 series and can be used as a direct replacement for other 5SY4 3-pole breakers with similar specifications. Compatible with Siemens panel accessories.

Technical note

Expert tip

The 5SY4302-6 is suitable for circuits where the prospective short-circuit current at the point of installation does not exceed 10kA.

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Frequently asked questions

Why choose a B-curve breaker like the Siemens 5SY4302-6 for 2A applications?

The Siemens 5SY4302-6's B-curve is chosen for applications with very low inrush currents, such as protecting sensitive electronic devices or basic lighting circuits. It trips quickly on low-level overloads, offering precise protection for resistive loads.