Siemens Q370 - 70A, 240VAC, 3-Pole, Circuit Breaker

The Siemens Q370 70A, 240VAC 3-Pole Circuit Breaker is engineered to deliver reliable overcurrent protection for 3-phase electrical systems in demanding environments. Built to handle the realities of industrial and commercial power distribution, this unit protects wiring, panels, and equipment from overloads and short circuits while keeping operation smooth and safe.

• Three-pole protection ensures coordinated shutoff across all three phases, reducing the risk of imbalanced loads and protecting downstream equipment in 3-phase circuits.
• 70A current rating at up to 240VAC provides robust protection for main feeders, distribution panels, and motor control centers in industrial and OEM applications.
• Flexible installation designed for panelboards, switchboards, and control panels, making it a versatile choice for electricians and specifiers managing complex electrical rooms.
• Durable, dependable performance built to operate in commercial and industrial settings where consistent protection and safe operation are critical to uptime.
• Clear protection for systems and personnel by reliably interrupting fault currents, helping to prevent damage to equipment and reduce downtime in critical infrastructure.

Ideal applications

• Industrial distribution panels and motor control centers requiring reliable 3-phase protection
• Commercial electrical rooms where space and wiring efficiency matter
• OEM equipment enclosures that demand robust, plug-and-play circuit protection

Practical guidance for use

• Match the Q370’s 70A / 240VAC ratings to your system’s feeder requirements and conductor sizing to ensure optimal protection without nuisance tripping.
• Install in compliant panelboards, switchboards, or control panels that support 3-pole breakers to maintain safe, coordinated protection across all phases.
• Plan for easy maintenance by selecting a layout that allows quick isolation of the circuit while preserving full access to the breaker for testing and replacement.

Choose the Siemens Q370 when you need a trusted, purpose-built solution for three-phase protection in distribution panels and motor control centers. It combines precise electrical protection with practical installation flexibility, helping you maintain safety, reliability, and efficiency across your electrical infrastructure.