HYUNDAI ELECTRIC HBL203 CIRCUIIT BREAKER 150A 440VAC 42KA

HYUNDAI ELECTRIC HBL203 circuit breaker is a robust overcurrent protection device engineered to deliver reliable electrical distribution across industrial, commercial, and demanding residential environments. Built by Hyundai Electric, this HBL203 unit is purpose-built for panel upgrades, retrofit projects, and maintenance replacements where dependable protection and fast fault clearance matter most.

• Amperage rating: 150 A — enough protection for mid-to-large feeder circuits without over-tripping.
• Voltage rating: 440 VAC — compatible with standard three-phase distribution systems found in commercial and industrial facilities.
• Interrupt capacity: 42 kA — ready to interrupt high-energy faults and minimize damage to downstream equipment.
• Application fit: Designed as a reliable component for Hyundai Electric panel systems, ideal for upgrades, retrofits, and service replacement work.
• Target users: Electricians, panel builders, and MRO teams who need trusted parts for everyday service, small projects, or stocking spares.

The HBL203 is more than just a breaker — it’s a strategic choice for teams that value uptime and predictable protection. In panel upgrades, it provides a seamless fit with existing buswork and trip characteristics, reducing commissioning time and enabling faster return-to-service for critical loads. For retrofit projects, it offers a proven 150 A solution that can handle evolving load requirements without sacrificing protection standards. And when used as a maintenance replacement, it ensures continuity of protection with equipment you can rely on.

Use cases in real-world settings

• Industrial facilities upgrading feeder circuits to support higher-demand machinery and automated lines.
• Commercial distribution panels needing a dependable 150 A protection point for service entrances and main feeders.
• Residential-commercial hybrids where robust protection for large electrical rooms is essential.
• Maintenance fleets stocking reliable spares for quick swap-outs during servicing or retrofit campaigns.

Why choose the HBL203 over other options? It combines a clear 150 A protection level with a 440 VAC operating window and a 42 kA interrupt rating, delivering predictable protection for demanding loads while staying compatible with Hyundai Electric ecosystem and installation practices. This makes it a smart, durable choice for electricians and panel builders who value consistency, ease of procurement, and reduced downtime on critical projects.

Technical snapshot

• Amperage rating: 150 A
• Voltage rating: 440 VAC
• Interrupt capacity: 42 kA
• Product family: Hyundai Electric HBL series (HBL203)