Description
The Square D EH24040 is a molded case circuit breaker designed to provide reliable overcurrent protection in commercial and industrial power distribution systems. This 2-pole breaker is rated at 40 amps and operates at 480Y/277VAC using a thermal magnetic trip unit for consistent fault protection. Featuring a plug-in mounting design, the EH24040 allows secure installation in compatible panelboards.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Square D |
| Category |
Circuit Breaker |
| Part Number |
EH24040 |
| Subcategory |
Molded Case Circuit Breaker |
| Series |
EH Series |
| Frame Type |
EH |
| Amperage Rating |
40 A |
| Voltage Rating |
480Y/277 VAC |
| Number of Poles |
2 |
| Phase |
Single Phase |
| Trip Unit Type |
Thermal Magnetic |
| Trip Functions |
Long-Time and Instantaneous |
| Interrupt Rating |
14 kA @ 480Y/277 VAC; 65 kA @ 120/240 VAC |
| Mounting Type |
Plug-In |
| Compatible Panelboard |
NEH Panelboard |
| Wire Size Range |
AWG 14 to AWG 2 (Aluminum/Copper) |
| Operating Temperature |
40°C |
| Certifications |
UL Listed, NETA Tested |
| Weight |
1 lb |
Information About EH24040
The EH24040 is a Square D EH Series molded case circuit breaker engineered for single-phase distribution applications. It incorporates a fixed thermal magnetic trip mechanism that provides long-time and instantaneous protection against overloads and short circuits. Designed for plug-in installation, this breaker is compatible with Square D NEH panelboards used in commercial and industrial facilities. Its UL listing and compliance with applicable testing standards ensure dependable performance in regulated electrical environments.
Key Features:
- 40 Amp Current Rating: Suitable for branch circuit protection in distribution systems
- 2-Pole Configuration: Provides coordinated protection for two conductors
- Thermal Magnetic Trip Unit: Ensures reliable long-time and instantaneous fault response
- High Interrupt Capability: Rated at 14kA at 480Y/277VAC and 65kA at 120/240VAC
- Plug-In Mounting: Enables quick installation and secure bus connection
- Wide Wire Compatibility: Accepts AWG 14 to AWG 2 aluminum or copper conductors
- Panelboard Compatibility: Designed for use with Square D NEH panelboards
The EH24040 delivers the reliability and precision required for commercial and industrial power distribution protection.
