Eaton QBH40 40A 1-Pole 240 V Circuit Breaker Potential Transformer

Protect what powers your space with the Eaton QBH40 40A 1-Pole 240 V Circuit Breaker Potential Transformer. This single-pole breaker delivers precise overcurrent protection for 240-volt circuits and is built to endure everyday panel operation in residential and light commercial applications. Part Number QBH40 ensures you’re selecting a genuine Eaton component designed to fit compatible panels and replace existing QB-style breakers with confidence.

Key specifications at a glance:

• Current rating: 40 A
• Poles: 1
• Voltage rating: 240 V
• Type: Circuit breaker, single-pole
• Series/compatibility: Eaton QB family (for use in compatible panelboards)

Why it matters and how you’ll use it:

• Safeguards branch circuits feeding lighting, outlets, and appliances on 240 V systems from overloads and short circuits, reducing risk of damage and fire.
• Ideal for upgrading an existing panel or replacing a worn-out breaker in residential settings, garages, workshops, and small offices where 240 V single-phase circuits are common.
• Supports organized, safe electrical layouts by providing reliable tripping behavior when current exceeds 40 A.

Practical tips:

• Before installation, verify your panel accepts 1-pole QB-type breakers and that your wiring is rated for 240 V and 40 A circuits.
• Inspect mounting rails and terminal connections for clean contact to ensure consistent operation and easy future replacements.
• Use in a properly enclosed panel with appropriate safety precautions; de-energize the service before any changes.

Whether you’re updating an aging electrical panel, outfitting a new workshop, or ensuring reliable protection for a 240 V circuit in a commercial space, the Eaton QBH40 delivers dependable protection with trusted Eaton build quality. Choose this Part Number QBH40 for a genuine, compatible solution that fits your existing Eaton protection setup.