Siemens Q345 - 345-45A, Molded Case Circuit Breaker

Meet the Siemens Q345 Molded Case Circuit Breaker — a rugged MCCB that delivers precise overcurrent protection where it matters most. With a current rating expressed as 345-45A, this unit is designed to guard your equipment and keep critical systems running in demanding environments.

Designed for panelboards, switchboards, control panels, and OEM equipment, the Q345 integrates smoothly into standard Siemens installations and supports dependable protection strategies across distribution panels and motor control centers. It’s built to stand up to industrial and commercial use, providing safe, reliable operation in daily operations.

Key specifications

• Current rating: 345-45A
• Breaker type: Molded Case Circuit Breaker

Ideal use cases

• Panelboards and switchboards in manufacturing plants, warehousing, and processing facilities
• Control panels and OEM equipment requiring dependable electrical protection
• Distribution panels and motor control centers where overcurrent protection is critical to uptime

What sets the Q345 apart

The Siemens Q345 MCCB is purposefully engineered for industrial and commercial environments where reliable protection and safe operation are non-negotiable. Its molded case design provides robust protection for power distribution and motor circuits, helping to minimize downtime and equipment damage during overcurrent events. By aligning with Siemens’ protection philosophy, it supports cohesive coordination with existing protection schemes in your electrical infrastructure.

Key practical advantages include straightforward integration into standard systems, proven performance in demanding conditions, and the reassurance of a trusted brand backing your protection strategy. Whether you’re upgrading an aging panel, wiring a new control cabinet, or designing OEM equipment, the Q345 offers a clear, purpose-built solution for dependable overcurrent protection in distribution panels and motor control centers.