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Matched our existing hardware and fit as expected. Clean install.
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Circuit Breaker
Siemens | HHLD63B350L | Circuit Breaker | 350A | 3-Pole | 600V
| Amperes | 350 |
| Poles | 3 |
| Voltage | 600 |
| Product Type | Circuit Breaker |
Regular price
$19,062.00
Sale price
$19,062.00
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.
Siemens | HHLD63B350L | Circuit Breaker | 350A | 3-Pole | 600V
Regular price
$19,062.00
Sale price
$19,062.00
Regular price
Unit price
Product description
Shipping
The Siemens HHLD63B350L circuit breaker is a rugged, high‑current protection device designed for industrial and commercial electrical systems. With a 350A rating, 3 poles, and a 600V operation, it delivers reliable, coordinated protection for three‑phase circuits in maintenance, retrofit, and replacement projects. Built to integrate with Siemens gear, this breaker helps keep critical equipment safeguarded and downtime to a minimum when faults occur.
Key specifications
- Amperage: 350 A
- Poles: 3-Pole
- Voltage rating: 600 V
- Part number: HHLD63B350L
- Compatibility note: The part number is the best reference for compatibility; confirm fit and ratings before ordering.
Why this breaker stands out
Compared to generic substitutes, the HHLD63B350L is purpose-built to match Siemens panelboards and distribution equipment, ensuring seamless integration and predictable protection behavior in demanding environments. Its 3‑pole design supports true three‑phase protection, reducing the risk of phase imbalances and enabling safe, simultaneous disconnection of all live lines during a fault. This makes it an ideal choice for feeders powering motors, transformers, and other heavy loads in industrial facilities.
Ideal use cases
- Maintenance and repair projects where a direct spec match is required for retrofitting existing Siemens systems.
- Retrofits in facilities upgrading electrical infrastructure to handle higher current demands.
- Replacement of aging or failed breakers in 600V, three-phase distribution networks.
- New installations in panels that require a 350A, 3‑pole, 600V protection device with Siemens compatibility.
Installation and compatibility tips
To ensure a precise fit, rely on the part number HHLD63B350L as your primary compatibility reference. Before purchasing, verify that the panel enclosure, busbar arrangement, and mounting style align with this breaker’s specifications. For best results, compare your system’s documented ratings with the 350A, 3‑pole, 600V profile to prevent mismatches and ensure compliant, safe operation.
Note: Confirm fit and ratings before ordering. The part number is the best reference for compatibility.
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