Eaton EHD2040 - 40 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Eaton EHD2040—a 40-amp, 480-volt, 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Built for steady performance in commercial, light industrial, and suitable residential environments, this unit combines solid mechanical mounting with precise electrical protection for lasting uptime and safer operation.

Why the EHD2040 stands out

• Secure bolt-on mounting: A rigid, vibration-resistant connection to the bus ensures consistent electrical contact and reduces the risk of loosening under equipment motion or motor starts.
• Thermal-magnetic trip unit: Provides stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic trips for short circuits, helping minimize nuisance trips while ensuring quick response to faults.
• OEM compatibility: Designed to line up with matching Eaton OEM load centers and panelboards, simplifying replacement, retrofits, and new installations without compatibility surprises.
• Versatile application reach: Ideal for protecting branches in residential service panels, commercial distribution boards, and light industrial electrical rooms where 480V distribution is standard.

Key features and benefits

• 40A rating provides reliable protection for circuits that drive motors, lighting, or receptacle banks without oversizing the protection for typical loads.
• 480V operation supports three-phase and single-phase distribution schemes common in commercial and industrial settings.
• 2-pole design simplifies protection of paired live conductors, improving fault isolation and reducing stray fault paths.
• molded case construction combines rugged housing with precise trip performance, designed to withstand the rigors of busy electrical rooms.

Practical use cases

• Protecting branch circuits in commercial panelboards that feed lighting, outlets, or small equipment loads in offices, retail spaces, and service rooms.
• Providing reliable overcurrent and short-circuit protection for 480V distribution feeders in light industrial environments.
• Serving as a straightforward replacement or retrofit in panelboards that require bolt-on functionality and compatible tracable trip characteristics.

Installation, compatibility and maintenance tips

• Confirm mounting compatibility with your panelboard’s bus design and ensure proper bolt-on installation per Eaton guidelines to maintain vibration resistance and contact integrity.
• Leverage the thermal-magnetic trip to balance protection against nuisance trips while maintaining rapid response to short-circuit events.
• Use in applications where coordinating protection with upstream devices is important for selective tripping and system uptime.
• Store and handle breakers in clean, dry conditions to preserve lug connections and trip mechanism smoothness over time.

Technical snapshot

• Eaton
• Part number: EHD2040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 40A
• Voltage rating: 480V
• Number of poles: 2
• Mounting style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection for panelboards and load centers

Choose the Eaton EHD2040 for a dependable, industry-proven solution that pairs secure mounting with precise, reliable protection. Its bolt-on design and thermal-magnetic trip make it a practical, long-term choice for today’s demanding electrical distributions—from busy commercial spaces to light industrial setups—delivering safety, uptime, and peace of mind.