HYUNDAI ELECTRIC HBL403 CIRCUIT BREAKER 400A 440VAC 42KA

Meet the HYUNDAI ELECTRIC HBL403 Circuit Breaker — a rugged, high-current protection device designed to deliver dependable electrical distribution across industrial, commercial, and demanding residential environments. Built by HYUNDAI ELECTRIC, this main breaker is engineered for reliability in panel upgrades, retrofit projects, and maintenance replacement work where downtime and faults can be costly. It’s a trusted component for electricians, panel builders, and MRO teams who need a proven solution for service work, small projects, or stocking spares.

Key specifications

• Model: HYUNDAI ELECTRIC HBL403
• Amperage rating: 400A
• Voltage rating: 440VAC
• Short-circuit current rating: 42kA
• Spaces / circuits: 403 CIRCUIT

What this enables for you

• Panel upgrades and retrofit projects: A robust main protection device that integrates smoothly with existing switchgear, helping you modernize protection schemes without unnecessary downtime.
• Maintenance and spare readiness: A reliable, field-proven component that reduces lead times when replacements are needed, keeping critical services online.
• Broad application fit: Suitable for industrial facilities, commercial buildings, and demanding residential deployments where dependable fault interruption matters.

The HBL403 is designed for professionals who demand consistency: a 400A rating paired with 440VAC compatibility and a 42kA interrupting capacity, delivering a solid safety margin against high fault currents and enabling swift response to protect wiring, equipment, and personnel.

Why choose HYUNDAI ELECTRIC HBL403

• Brand reliability: HYUNDAI ELECTRIC is known for durable protection devices that perform in challenging environments.
• Clear, actionable protection: Precise current handling and robust interruption capabilities reduce the risk of cascading faults.
• Efficient maintenance workflow: Field-friendly design supports quick swaps and straightforward integration into existing panels.

Practical notes for installation and planning: Before swapping, verify your panel’s space and bus connection compatibility to ensure a smooth replacement. Refer to Hyundai Electric installation guidance for correct mounting and electrical connections, and keep this breaker on hand in your service fleet or spare inventory to minimize disruption during maintenance windows.

Embrace confident protection with the HYUNDAI ELECTRIC HBL403 Circuit Breaker — a dependable solution for high-current distribution that keeps systems running protectively and efficiently.