Square D Q1140 Circuit Breaker, 40A, 1-Pole, 120V

The Square D Q1140 Circuit Breaker is a purpose-built, industrial-grade protective device engineered for service, maintenance, and replacement work. With a 40 A rating and a single pole, it delivers dependable overload and fault protection for 120-volt circuits, helping keep equipment and personnel safe in demanding environments.

• Current rating: 40 A
• Poles: 1
• Voltage: 120 V
• Part number: Q1140
• Intended use: industrial electrical service, maintenance, and replacement projects

In practical terms, the Q1140 is a straightforward, reliable option when you need to protect a 120V branch circuit in an industrial setting. It’s ideal for replacing a failed breaker or upgrading panel protection where a 40A, 1-pole device is required. Its straightforward form factor supports quick swaps during maintenance windows, reducing downtime and keeping critical systems online. This breaker’s value comes from clear compatibility through the part number. To ensure a perfect fit, verify the Q1140 against your panel’s documentation and application requirements. If you’re unsure about compatibility or matching a part number to your exact setup, send us a message—we’re happy to help you confirm fit and get you moving quickly. Who should consider the Square D Q1140? Electricians and facilities managers working with industrial panels that rely on consistent, reliable 40A protection for 120V circuits. It’s a solid choice for replacement stock, routine panel maintenance, and projects requiring a dependable, widely supported circuit breaker from a trusted brand. Specifications at a glance: - Amperage: 40 A - Poles: 1 - Voltage: 120 V - Part Number: Q1140 - Application: industrial service, maintenance, and replacement projects Note: Always verify fit by part number and application requirements before installation. If you need help matching a part number or confirming compatibility, message us and we’ll assist.