Square D | EHB34040PL | Circuit Breaker | 40A | 3-Pole | 480V | Bolt-On

Meet the Square D EHB34040PL, a purpose-built 40 Amp, 3-Pole, 480V bolt-on circuit breaker designed for demanding industrial and commercial electrical distributions. Built for reliability in maintenance, retrofit, and replacement projects, this unit ensures precise protection where exact specifications matter.

Key specifications

• Amperage: 40 A
• Poles: 3-Pole (three-phase)
• Voltage rating: 480 V
• Mounting style: Bolt-On
• Part number: EHB34040PL

Why this model stands out: This breaker is designed to align precisely with Square D specifications, making it an ideal fit for systems that require exact 40A, 480V, 3-pole protection. The bolt-on mounting simplifies field installation in compatible panels, enabling swift swaps or upgrades during planned maintenance or emergency replacements. Remember: the part number is your most reliable reference for compatibility, so keep EHB34040PL on hand when shopping for replacements.

Ideal use cases

• Upgrading or replacing 3-phase protection in 480V distribution panels
• Retrofit projects where a 40A, 3-pole breaker is required to match existing circuitry
• Stocking spare parts for facilities with Square D bolt-on breakers to minimize downtime

Compatibility and installation tips

• Verify that your panel accepts bolt-on, 3-pole breakers rated for 480V before ordering.
• Check the panel’s interrupting capacity and bus configuration to ensure a safe, code-compliant fit.
• Follow proper safety procedures during installation and testing to minimize risk and downtime.

Designed for professionals managing industrial electrical systems, the Square D EHB34040PL delivers dependable interruption control for critical 3-phase loads. Whether you’re maintaining a legacy installation, retrofitting to upgrade protection, or replacing a failed unit, this breaker provides a precise, reliable solution built around real-world operating needs.