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Matched our existing hardware and fit as expected. Clean install.
Maintenance · Retrofit work
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Circuit Breaker
Square D | LHF3640030DC | Circuit Breaker | 400A | 3-Pole | 600V
★★★★★
| Part Number | LHF3640030DC |
| Amperes | 400 |
| Poles | 3 |
| Voltage | 600 |
| Product Type | Circuit Breaker |
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.
Square D | LHF3640030DC | Circuit Breaker | 400A | 3-Pole | 600V
Regular price
$2,010.00
Sale price
$2,010.00
Regular price
Unit price
Product description
Shipping
The Square D LHF3640030DC circuit breaker is built for demanding electrical environments that rely on robust, reliable protection for 600V circuits. With a 400A rating and 3-pole configuration, this device is purpose-built for three-phase systems that require precise, dependable overcurrent protection in maintenance, retrofit, and replacement projects.
- Amperage: 400 A
- Poles: 3-Pole
- Voltage: 600V
- Reference: Part number LHF3640030DC
Designed to slide into existing Square D installations where matching specs are essential, this breaker helps minimize downtime and compatibility risks during upgrades or service work. Its three-pole design ensures balanced protection across all phases, helping to safeguard wiring, motors, and other equipment from overcurrent conditions in industrial and commercial panels.
Why this model stands out
Unlike generic substitutes, the LHF3640030DC is chosen for scenarios where exact specifications matter. It’s ideal for:
- Maintenance: keep your distribution panel protected and compliant during routine servicing.
- Retrofit: upgrade or modernize systems while preserving original panel compatibility.
- Replacement: swap in a proven, same-spec unit when a previously installed breaker reaches end of life.
Practical considerations and getting it right
Before ordering, verify fit and ratings to ensure seamless integration with your panel. The part number LHF3640030DC is the best reference for compatibility, so keep it on hand for future purchases and parts replacements.
Ideal for electrical professionals and maintenance teams managing 3-phase, high-load applications, this Square D circuit breaker helps you protect critical equipment, reduce disruption, and maintain safe, reliable operation in both retrofit projects and ongoing service life.
Use cases at a glance:
- Protecting 3-phase equipment in 600V systems
- Replacing aging or damaged breakers with an exact-spec unit
- Upgrading protection in retrofit installations while preserving panel integrity
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