Square D EDB16040 - 40 A, 347 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EDB16040 — a 40A, 347V, 1-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and loadcenters. Designed to handle the realities of commercial, residential, and light industrial environments, this unit delivers reliable overcurrent and short-circuit protection when it matters most.

Why this bolt-on breaker excels

• Rigid, vibration-resistant mounting — secure bolt-on connection ensures a stable, low-movement bus contact, maintaining consistent protection even in vibration-prone installations.
• Thermal-magnetic trip unit — combines precise current sensing with fast, predictable response, delivering repeatable protection curves you can count on across varying loads and temperatures.
• Panelboard and loadcenter compatibility — designed to pair with matching OEM enclosures, simplifying upgrades and replacements without custom adaptations.
• Versatile application — ideal for residential, commercial, and light industrial circuits that require reliable 40A protection at 347V.

Technical snapshot

• Manufacturer: Square D
• Part number: EDB16040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 40A
• Voltage rating: 347V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

Use the EDB16040 in panelboards and loadcenters that operate at 347V, where a single-pole protection device is appropriate for specific branch circuits. It’s well-suited for installations in commercial spaces with modular panel layouts, light industrial equipment rooms, or residential electrical systems that demand robust protection without sacrificing space in the enclosure. The bolt-on design is particularly advantageous in environments where panel accessibility and secure bus connections are critical for long-term reliability.

Practical considerations and benefits

• Reliability in demanding environments: The bolt-on style minimizes the risk of loose connections due to vibration, a common challenge in busy electrical rooms.
• Protection you can trust: The thermal-magnetic trip mechanism provides stable performance across a range of operating conditions, reducing nuisance trips while still responding promptly to true faults.
• Easy integration: As a matching OEM component, it streamlines replacement and modernization projects, helping you keep existing panelboard architectures intact.

Whether you’re upgrading an aging panel, designing a new commercial distribution scheme, or reinforcing a light industrial electrical room, the Square D EDB16040 delivers targeted, dependable protection with a straightforward bolt-on installation. Rely on its specific 40A, 347V, 1-pole configuration to safeguard branch circuits efficiently and effectively, backed by Square D’s engineering to keep systems running smoothly.