Siemens CQD140 Molded Case Circuit Breaker – CQD Series – 40A – 1 Pole – 277V – Feed-Thru – 14kAIC

The Siemens CQD140 is a CQD Series molded case circuit breaker designed for reliable overcurrent protection in commercial and industrial electrical systems. This 40A, single-pole breaker operates at 277V and features a feed-thru connection style for flexible panelboard and distribution applications.

Equipped with thermal magnetic trip technology, the CQD140 provides dependable Long-Time and Instantaneous (LI) protection against overloads and short-circuit conditions. Its compact design and standard interrupting capacity make it suitable for a wide range of branch circuit protection needs.

Specifications

• Brand: Siemens / ITE
• Manufacturer: Siemens
• Part Number: CQD140
• Series: CQD Series
• Category: Molded Case Circuit Breaker
• Type: CQD
• Mounting Style: Feed-Thru

Electrical Ratings

• Current Rating: 40A
• Number of Poles: 1 Pole
• Voltage Rating: 277V AC
• Phase: 1 Phase
• Interrupting Capacity: 14kAIC @ 277V
• Protection Type: Thermal Magnetic
• Trip Functions: Long-Time, Instantaneous (LI)

Technical Features

• Feed-thru connection design for flexible wiring
• Thermal magnetic trip mechanism
• Reliable overcurrent and short-circuit protection
• Compact molded case construction
• Suitable for commercial electrical distribution systems

Environmental & Mechanical

• Ambient Temperature Rating: 40°C
• Weight: 0.65 lbs

Standards and Approvals

• CSA Approved
• Siemens / ITE Authentic Product

Applications

• Commercial electrical distribution systems
• 277V lighting circuits
• Industrial branch circuit protection
• Panelboard installations
• HVAC and equipment circuits
• General-purpose electrical distribution

Returns are easy

You may return items within 30 days of delivery for a refund.

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