HYUNDAI ELECTRIC HBS403 CIRCUIT BREAKER 400A 440VAC 35KA

Overview

The HYUNDAI ELECTRIC HBS403 Circuit Breaker is a robust, high-capacity solution for reliable electrical distribution across industrial, commercial, and demanding residential installations. Engineered by HYUNDAI ELECTRIC, this unit is designed for panel upgrades, retrofit projects, and maintenance replacements where dependable protection and quick service are essential. With a 400 A rating, 440 VAC operating voltage, and a 35 kA interrupting capacity, it protects large loads and complex circuits with confidence.

Key specifications

• Amperage rating: 400 A
• Voltage rating: 440 VAC
• Short-circuit current rating: 35 kA
• Spaces / circuits: 403 circuit positions

Who benefits from this breaker

Ideal for electricians, panel builders, and MRO teams who regularly perform panel upgrades, retrofits, or maintenance replacements. When downtime matters and dependable protection is non-negotiable, the HBS403 delivers consistent performance for service work, large-scale projects, and spare-part stocking strategies.

Why it matters

In demanding environments, protection against overcurrents at 440 VAC while handling substantial load demands is critical. The HBS403’s 35 kA interrupting capacity provides a robust barrier against fault conditions, helping minimize equipment damage and unplanned outages. Its 400 A rating supports sizeable feeder and main circuit protection without requiring multiple smaller devices.

Practical use cases

• Main distribution panels in manufacturing plants upgraded from aging or undersized breakers
• Retrofit installations in large commercial buildings seeking consolidation of circuits into a single, high-capacity panel
• Maintenance replacement scenarios where quick availability and trusted performance are key

Installation and compatibility notes

Plan around your enclosure size, busbar configuration, and wiring practices. Confirm mounting compatibility with your Hyundai Electric ecosystem and ensure appropriate clearance, torque specifications, and safety protocols during installation. This breaker is designed to integrate into modern distribution schemes requiring robust protection and straightforward serviceability.

Unique value proposition

• Trusted Hyundai Electric build quality backed by decades of distribution experience
• High-capacity 400 A protection with a strong 35 kA interrupting rating for demanding fault conditions
• Extensive 403-circuit space capability reduces the need for multiple panels in large projects
• Tailored for upgrades, retrofits, and service replacements where reliability and fast availability matter most

How to proceed

Choose the HYUNDAI ELECTRIC HBS403 Circuit Breaker to fortify your distribution network with reliable protection and scalable circuit capacity. Perfect for stock-ready maintenance, panel builds, and retrofit work—delivering peace of mind for installers and operators alike.