Home › Manufacturers › Siemens › 5SY4306-8

Siemens

Siemens 5SY4306-8 3-Pole Miniature Circuit Breaker - 6A, 400V

Siemens 5SY4306-8 Miniature Circuit Breaker

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number5SY4306-8

Poles 3

Current Rating 6A

Voltage Rating 400V AC

Breaking Capacity 10kA

Get a price for 5SY4306-8

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

3-pole design 6A current rating Type D tripping curve 10kA breaking capacity DIN rail mountable High inrush current tolerance

Product description

The Siemens 5SY4306-8 is a 3-pole miniature circuit breaker engineered for demanding applications. It operates at 400V AC with a current rating of 6A and a high short circuit breaking capacity of 10kA. This breaker features a Type D tripping characteristic, making it exceptionally suitable for loads with very high inrush currents.

This circuit breaker is ideal for protecting equipment such as large motors, transformers, solenoid valves, and other industrial machinery that experience significant startup surges. The Type D curve provides robust protection against faults without nuisance tripping during these high inrush events.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, offers the Siemens 5SY4306-8. We provide reliable components and competitive pricing, ensuring you get the parts you need for your critical systems.

Technical specifications

Poles	3
Current Rating	6A
Voltage Rating	400V AC
Breaking Capacity	10kA
Tripping Characteristic	D
Mounting	DIN Rail
IP Rating	IP20

Common applications

Motor Protection

Transformer Protection

Solenoid Valve Circuits

Industrial Machinery

High Inrush Loads

Compatible systems

General industrial automation systems, control panels, and electrical distribution boards.

Also known as

Siemens SENTRON 5SY4306-8 5SY4 Series MCB Siemens 6A 3P D-curve breaker

Replaces / compatible with

Compatible with Siemens SENTRON 5SY series accessories. Consult manufacturer documentation for specific replacement information.

Technical note

Expert tip

The Type D characteristic provides a high magnetic trip setting (10-20x rated current), essential for preventing nuisance tripping on initial motor startup or other high-surge loads.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What type of loads require a Type D circuit breaker like the 5SY4306-8?

Type D circuit breakers, such as the Siemens 5SY4306-8, are designed for loads that experience very high inrush currents during startup. This includes equipment like large motors, welding transformers, and industrial X-ray equipment, where the inrush can be 10 to 20 times the rated current.