Siemens 5SY4330-7 - 30A, 3-Pole, Circuit Breaker

Meet the Siemens 5SY4330-7 30A 3-Pole circuit breaker, a purpose-built protection device designed for demanding electrical environments. Engineered by Siemens, this breaker delivers reliable overcurrent protection across three phases, helping to safeguard motors, drives, and distribution infrastructure in one compact unit.

Why this 3-Pole design matters

In three-phase systems, a balanced protection scheme is essential. The 3-Pole configuration ensures simultaneous interruption of all live conductors, reducing the risk of phase-to-phase faults and enabling quicker, safer shutdowns during abnormal conditions. This makes it an ideal choice for panelboards, switchboards, and motor control centers where stable, coordinated protection is critical.

Where it shines

• Industrial panelboards and switchboards requiring dependable three-phase protection
• Motor control centers for conveyors, presses, pumps, and fan assemblies
• Commercial and OEM applications where compact, field-ready protection is needed

Key capabilities that set it apart

• Current rating: 30A for effective protection of moderate to high-load circuits
• Poles: 3-Pole for synchronized interruption of all phases in a three-phase system
• Breaker type: Circuit Breaker designed for reliable, rapid fault isolation
• Designed for robust performance in distribution panels and motor control centers, with compatibility in standard Siemens configurations for streamlined installation and maintenance

Practical usage and benefits

For facilities upgrading their electrical protection or OEMs building integrated systems, the Siemens 5SY4330-7 offers predictable operation and long-term reliability. It helps minimize downtime by providing clear, immediate fault isolation, reducing potential damage to motors, drives, and downstream equipment. Its three-pole construction is especially valuable in equipment where synchronous shutdown across all phases is essential for safety and process integrity.

Ideal for

• Manufacturing floors with heavy machinery and automated lines
• Facilities relying on motor-driven equipment and control panels
• OEM assemblies needing a dependable, ready-to-install protection device

Specification at a glance

• Current rating: 30A
• Poles: 3-Pole
• Breaker type: Circuit Breaker

Choose the Siemens 5SY4330-7 when you need solid, three-phase overcurrent protection that integrates seamlessly with distribution panels and motor control centers. It’s a reliability-forward choice for industrial, commercial, and OEM environments where safety, predictability, and quick fault isolation matter most.