EHB24040 | Square D 40A 2-Pole Bolt-On Molded Case Circuit Breaker for 277/480V Systems

Schneider Electric · Circuit Breakers & Protection

Description  The Square D EHB24040 is a 40A molded case circuit breaker designed to provide dependable protection for 277/480V AC single-phase electrical systems. This breaker features a two-pole configuration and a thermal-magnetic trip unit for accurate overload and short-circuit response. It is built for bolt-on installation in panels requiring compact, reliable branch-circuit protection.     Technical Specifications  Condition New/Never Used Surplus Brand Square D Category Circuit Breaker Part Number EHB24040 Subcategory Molded Case Series EHB Series Frame Type EH Amperage Rating 40A Voltage Rating 277/480 VAC Number of Poles 2 Phase 1-Phase Interrupt Rating 14 kAIC @ 240–277V Protection Thermal Magnetic Trip Functions LI – Long-Time & Instantaneous Mounting / Connection Bolt-On Temperature Rating -13°F to 158°F (-25°C to 70°C) Certifications UL, CSA Weight 1 lb Information About EHB24040 The EHB24040 is part of Square D’s EHB Series, a line engineered for bolt-on mounting in compatible distribution panels. It uses the EH frame design, which supports stable performance and consistent trip characteristics in a wide range of electrical environments. The breaker includes long-time and instantaneous trip functions, making it suitable for circuits where both overload resilience and fast fault clearing are required. Its 14 kA interrupt rating at 240–277V AC allows it to be used effectively in commercial and light industrial systems. Key Features: 40A Rating: Provides branch-circuit protection for moderate electrical loads in 277/480V systems. Two-Pole Design: Supports single-phase applications requiring simultaneous disconnection of both conductors. Thermal-Magnetic Trip: Ensures precise response to overloads and short-circuit conditions. Bolt-On Connection: Offers secure mounting and stable electrical contact within compatible panelboards. LI Trip Functions: Features long-time and instantaneous protection for versatile fault-handling capability. EH Frame Construction: Delivers consistent mechanical durability and reliable trip performance. 14 kA Interrupt Rating: Allows safe clearing of higher-energy faults in commercial applications. 277/480V Compatibility: Suitable for a wide range of building and equipment power distribution systems. The EHB24040 delivers the reliability and precision required for dependable molded case circuit protection in commercial and industrial installations.

Brand: Schneider Electric · Category: Circuit Breakers & Protection

Key features

• 40A Rating: Provides branch-circuit protection for moderate electrical loads in 277/480V systems.
• Two-Pole Design: Supports single-phase applications requiring simultaneous disconnection of both conductors.
• Thermal-Magnetic Trip: Ensures precise response to overloads and short-circuit conditions.
• Bolt-On Connection: Offers secure mounting and stable electrical contact within compatible panelboards.
• LI Trip Functions: Features long-time and instantaneous protection for versatile fault-handling capability.
• EH Frame Construction: Delivers consistent mechanical durability and reliable trip performance.
• 14 kA Interrupt Rating: Allows safe clearing of higher-energy faults in commercial applications.
• 277/480V Compatibility: Suitable for a wide range of building and equipment power distribution systems.

Specifications

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