Verified
Solid quality component. Exactly as described on the product page.
Maintenance team · Ontario
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45A
NB345-FLAT-TOP | Circuit Breaker | 45A | 3-Pole | 240V
| Amperes | 45 |
| Poles | 3 |
| Voltage | 240 |
| Product Type | 45A |
Regular price
$2,010.00
Sale price
$2,010.00
Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
NB345-FLAT-TOP | Circuit Breaker | 45A | 3-Pole | 240V
Regular price
$2,010.00
Sale price
$2,010.00
Regular price
Unit price
Product description
Shipping
Introducing the NB345-FLAT-TOP Circuit Breaker — a rugged, industrial-grade protection device designed for reliability in demanding electrical installations. This 3-pole unit delivers 45A of current at 240V, making it ideal for safeguarding multi‑phase motors, drives, and feeders in manufacturing, facilities, and OEM environments.
The flat-top NB345-FLAT-TOP is engineered for compatibility with panels and enclosures that require a flat-top mount. Its design supports clean, secure installation in retrofit and replacement projects where matching specs matters most. When you’re upgrading or maintaining a distribution panel, this part reference helps ensure you get the right fit the first time.
Key specifications
- Amperage: 45A
- Poles: 3‑Pole
- Voltage: 240V
- Type and design: Industrial circuit breaker with flat-top geometry for compatible enclosures
Why it matters in the field
For maintenance, retrofit, or replacement, a 3-pole 240V breaker like the NB345-FLAT-TOP ensures all three phases trip together, protecting both equipment and personnel by preventing hazardous voltage imbalances. Its 45A rating aligns with mid-range loads commonly found on three-phase motors, conveyors, pumps, and HVAC systems, enabling safe interruption during faults without unnecessary nuisance tripping.
Who benefits most
- Maintenance technicians replacing aging or damaged breakers in industrial panels
- Panel builders and electricians performing retrofits or upgrades to existing 3‑phase circuits
- OEMs integrating reliable protection for equipment racks, drives, and motor control centers
Practical guidance for best results
- Always confirm fit and ratings before ordering. The NB345-FLAT-TOP part number is the best reference for compatibility.
- Match the breaker to your panel’s design—the flat-top format is key for proper seating and secure mounting in assemblies that specify this geometry.
- Use this breaker for discontinuing or protecting three‑phase circuits up to 240V, especially where a coordinated trip across all poles is required.
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What Our Customers Say
General feedback we often hear from customers purchasing industrial electrical parts.
Verified
Packaging was secure and the item arrived clean and ready for installation.
Electrical contractor · GTA
Verified
We’ve used this type on multiple jobs and it’s been reliable so far.
Panel shop · Canada/US
