Siemens Q340 - 40A, 3-Pole, Circuit Breaker

The Siemens Q340 is a robust 40A, 3-Pole circuit breaker designed for reliable overcurrent protection in three-phase electrical systems. Built for industrial, commercial, and OEM environments, it is a trusted choice for panelboards, switchboards, and control panels where dependable protection matters most.

• Current rating: 40A
• Poles: 3-Pole
• Breaker type: Circuit Breaker
• Compatibility: Ideal for panelboards, switchboards, and control panels in distributed electrical systems
• Best for: Industrial facilities, commercial installations, and OEM projects requiring safe, synchronized protection across all three phases

Why it matters: In a three-phase setup, a single 3-pole breaker protects all phases, simplifying panel design and ensuring coordinated trip behavior. The Q340’s 40A rating fits a wide range of motor loads and distribution circuits, providing effective protection without oversizing the device.

Use cases you can rely on:

• Motor control centers where consistent phase protection is critical
• Distribution panels in factories and commercial buildings needing compact, reliable protection
• OEM electrical assemblies that require a proven, compatible 3-pole solution

Choosing Siemens means aligning with a proven protection strategy and seamless integration into existing Siemens installations and maintenance practices. The Siemens Q340 delivers straightforward, dependable performance for critical electrical infrastructure.

Keep critical loads safeguarded and your distribution networks running smoothly with the Siemens Q340—a purpose-built, 3-Pole, 40A circuit breaker designed for demanding environments.