Siemens QE240H 40A 2-Pole 240 V Circuit Breaker Potential Transformer

Introducing the Siemens QE240H 40A 2-Pole 240 V Circuit Breaker — a dependable protective device built to protect 240-volt circuits in commercial and light-industrial panels. The QE240H is designed for consistent, predictable trips, helping minimize downtime and protect critical equipment from overloads and faults.

• Part Number: QE240H
• Current rating: 40 A
• Poles: 2
• Voltage rating: 240 V

Why this 2-pole, 240 V breaker is the right choice

For 240-volt circuits, a two-pole design ensures both conductors are simultaneously disconnected, enhancing safety and improving protection for feeders, motors, and other high-voltage loads. The QE240H is compact enough to fit a range of panelConfigurations while delivering robust protection against short circuits and sustained overloads.

Key benefits and use cases

• Reliable protection for 240 V circuits: Ideal for branch circuits feeding motors, heating elements, and equipment in commercial spaces and light-industrial settings.
• Efficient panel maintenance: Quick replacement in existing Siemens-compatible panels helps minimize downtime during upgrades or service calls.
• Protection that scales with your system: Pair with protection schemes and metering setups that rely on stable, dependable circuit interruption—potential transformer environments are supported by its design and rating.
• Clear, durable design for field use: Built for daily operation in demanding environments, with straightforward wiring and disconnection when needed.

What sets QE240H apart

• Exact match for Siemens panels: Seamless compatibility with Siemens protection architecture, reducing installation guesswork.
• Focused 40 A protection: Delivers precise, reliable interruption for circuits within the 40-amp range, helping to prevent damage to connected equipment.
• 2-pole construction: Ensures simultaneous disconnection of both supply lines, improving safety and fault isolation for 240 V loads.
• Durable, field-ready design: Built to endure consistent operation in industrial and commercial environments.

Practical installation and care tips

Before installation, confirm that the panel enclosure and bus arrangement are compatible with the QE240H and that the 240 V circuit conditions match the breaker’s rating. Follow standard safety practices, secure all connections per manufacturer guidelines, and reference Siemens installation instructions for torque recommendations and terminal compatibility. This approach helps maximize reliability and prolong service life in daily operations.

Whether you’re updating an old panel, wiring a new 240 V feeder, or configuring a protection scheme in a demanding environment, the Siemens QE240H 40A 2-Pole 240 V Circuit Breaker delivers clear, dependable protection with a focus on real-world performance and ease of use.