FD1040L | Eaton 1-Pole 40A 347V Thermal Magnetic Molded Case Circuit Breaker

Eaton · Circuit Breakers & Protection

Description  The Eaton FD1040L is a single-pole molded case circuit breaker engineered for reliable electrical protection in commercial and industrial installations. Rated at 40 amps and 347 volts, it features a high interrupting capacity of up to 35kA at 277V and 18kA at 347V. The FD1040L combines fixed thermal and magnetic trip units for dependable overload and short-circuit protection in demanding electrical systems.     Technical Specifications  Condition New/Never Used Surplus Brand Eaton Category Circuit Breaker Part Number FD1040L Subcategory Molded Case Series Series C Frame Type F-Frame Poles 1 Amperage Rating 40 A Voltage Rating 347 VAC / 125 VDC Interrupting Capacity 35kA @ 277V / 18kA @ 347V Protection Type Thermal Magnetic Trip Type Fixed Thermal / Fixed Magnetic Connection Type Line and Load Terminals Mounting Type Panel / Bolt-On Frequency Rating 50/60 Hz Trip Unit T186 Certifications UL Listed Operating Temperature Range -13°F to 158°F (-25°C to 70°C) Dimensions (H x W x D) 6 x 1.38 x 3.38 in Country of Origin Dominican Republic Weight 4 lb   Information About FD1040L The FD1040L is part of the Eaton Series C F-Frame family of molded case circuit breakers, known for their robust performance and broad range of configurations. Built with a patented high-speed blow-open contact design, this breaker enhances fault interruption efficiency and system safety. It features line and load terminals for easy connection and supports both AC and DC applications up to 125VDC. Designed for panelboards and OEM equipment, the FD1040L meets UL certification standards and operates reliably across 50/60 Hz frequencies. Key Features: Current Rating: 40 Amps – Provides stable current protection for small to mid-range electrical loads. Voltage Rating: 347 VAC / 125 VDC – Supports both alternating and direct current systems. Interrupting Capacity: 35kA @ 277V / 18kA @ 347V – Delivers strong fault current interruption for high-performance applications. Protection Type: Thermal Magnetic – Combines fixed thermal and magnetic trip elements for dual protection. Mounting Configuration: Line and Load Terminals – Simplifies secure installation and wiring. Patented Contact Design: Features a high-speed “blow-open” mechanism for enhanced interruption efficiency. Frame Type: F-Frame (Series C) – Compatible with Eaton’s standard accessories for easy integration. Certifications: UL Listed – Meets stringent industry safety and performance standards. The FD1040L delivers the reliability and precision required for industrial circuit protection and dependable power distribution.

Brand: Eaton · Category: Circuit Breakers & Protection

Key features

• Current Rating: 40 Amps – Provides stable current protection for small to mid-range electrical loads.
• Voltage Rating: 347 VAC / 125 VDC – Supports both alternating and direct current systems.
• Interrupting Capacity: 35kA @ 277V / 18kA @ 347V – Delivers strong fault current interruption for high-performance applications.
• Protection Type: Thermal Magnetic – Combines fixed thermal and magnetic trip elements for dual protection.
• Mounting Configuration: Line and Load Terminals – Simplifies secure installation and wiring.
• Patented Contact Design: Features a high-speed “blow-open” mechanism for enhanced interruption efficiency.
• Frame Type: F-Frame (Series C) – Compatible with Eaton’s standard accessories for easy integration.
• Certifications: UL Listed – Meets stringent industry safety and performance standards.

Specifications

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