Siemens Q24040NC 40A 2-Pole 240 V Circuit Breaker

Protect 240-volt circuits with precision using the Siemens Q24040NC 40A 2-Pole 240 V Circuit Breaker. This reliable unit delivers automatic overcurrent protection, quickly disconnecting power when a fault or overload is detected to help safeguard wiring and connected equipment.

Key specifications

• Part Number: Q24040NC
• Current rating: 40 A
• Poles: 2
• Voltage rating: 240 V

Why this breaker stands out

• Two-pole design: Triggers simultaneously on both hot legs, which is essential for safely protecting 240V circuits.
• Direct, reliable protection: Built to reliably interrupt current to prevent wiring overheating and damage to high-draw appliances.
• Category-ready replacement: A straightforward option for maintaining or upgrading 240V protection in compatible Siemens installations.
• Durable performance: Engineered for consistent operation in residential and light commercial settings where dependable safety devices matter.

Ideal use cases

Suitable for 240V branch circuits that require 40A protection in homes and small businesses. Think of high-demand loads such as space heaters, air conditioning equipment, water heaters, and other 240V appliances that benefit from reliable, dedicated overcurrent protection.

Installation and safety tips

For best results, ensure this breaker is installed in an appropriate Siemens panel or enclosure designed to accept this model. Always follow local codes and the panel manufacturer’s guidelines, and shut off main power before handling any electrical components. If you’re not completely confident in performing the replacement or installation, consult a licensed electrician.