01
Efficiency
Modular, compact design improves space efficiency. High interrupting performance and low power loss support stable power management.
Susol UL ACB
The premium Susol UL Air Circuit Breaker (ACB) is designed to meet customer requirements with high interrupting capacity, a lineup up to 6000 A, and a frame structure optimized for switchboard design. The Susol UL ACB is equipped with advanced trip relays that support measurement, diagnostics, analysis, and communication. When used to complete a power monitoring or protection coordination system, the products provide an integrated solution for power distribution applications.
- Rated Current
- 400 – 6000 A
- Rated Short Circuit Current (Sym.)
- Up to 130 kA (at 508 V AC, 6000 A) Up to 85 kA (at 847 V AC, 4000 A)
- Standard
- UL 489 (C-frame) UL 1066 (D, E, G-frame)
Key Features
02
Convenience
Replaceable trip units and plugs simplify maintenance. Multiple connection options and draw-out construction provide design flexibility. Field-installable accessories improve installation efficiency.
03
Reliability
Supports ratings up to 130 kA and 847 V AC. Electronic trip technology enables precise protection and metering. Tested for use in demanding industrial environments to support reliable application.
04
Smart Features
Supports Modbus, BLE, NFC, and USB connectivity. Integrates protection, metering, diagnostics, and communication functions.
Lineup
Rated Operational Voltage | Rated Current(In) | Rated Short Circuit Current | Applicable Standard | |
|---|---|---|---|---|
 C Frame | Up to 800 Vac | 400 - 1200 A | Up to 65 kA | UL 489 |
 D Frame | Up to 635 Vac | 400 - 1600 A | Up to 85 kA | UL 1066 |
 E Frame | Up to 847 Vac | 400 - 4000 A | Up to 100 kA | UL 1066 |
 G Frame | Up to 635 Vac | 1600 - 6000 A | Up to 130 kA | UL 1066 |
Downloads
[Susol UL ACB] Catalog
- [Susol_UL_ACB]_EN_C06072-27-202608.pdf (62.36MB)
[Susol UL ACB] for Nuclear power plant
- [Susol_UL_ACB]_원전용_EN_C060S2-01-202602.pdf (79.92MB)
[ACB] MDGF User Manual
- [MDGF]Manual_ENG_260814.pdf (1.52MB)
[UL ACB] STU USER MANUAL
- [Susol_Metasol ACB] STU_USER Manual_EN 202607.pdf (10.43MB)
[ACB] Maintenance Manual
- Maintenance_Manual_ACB_ENG_20251210.pdf (2.47MB)
Markets
Discover how our real-time monitoring and precise control capabilities drive operational efficiency, ensure compliance,
and maintain 24/7 continuity across the most demanding global markets.
Data Center
Scalable & Uninterrupted Power
Ensure 24/7 uptime with high-reliability power distribution and smart monitoring. Engineered for the precision, efficiency, and scalability required by mission-critical hyperscale environments.
Power Grid
Intelligent Grid & Energy Orchestration
Optimize energy flow from generation to distribution. We empower utilities and enterprise microgrids with advanced grid intelligence, seamless BESS integration, and renewable energy management.
Oil & Gas, Mining Industries
Rugged Reliability for Harsh Environments
Maximize operational safety and efficiency under extreme conditions. Deliver robust power solutions and intelligent automation tailored for petrochemicals & refining, heavy metals & mining
Public Infrastructure
Resilient Power for Mission-Critical Facilities
Safeguard essential public services with robust electrical architectures. We deliver highly reliable power control and automation for government facilities, aviation hubs, water treatment plants
Industrial
Smart Automation & Motor Control
Drive manufacturing excellence and minimize production downtime. Our precision automation and power systems are optimized for automotive lines, semiconductor fabrication, heavy machinery
Commercial & Residential
Optimized Energy for Smart Buildings
Protect critical building systems and enhance overall energy efficiency. Delivering safe, compliant, and scalable power solutions for high-rise commercial spaces, logistics hubs, retail complexes
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Highlights
Articles
LS ELECTRIC America Launches Advanced Susol UL Air Circuit Breaker for Safer, Smarter Power
Feb 25, 2026
Articles
LS ELECTRIC America Launches Advanced Susol UL Air Circuit Breaker for Safer, Smarter Power
Jan 30, 2026
Blog
Everything You Need to Know About Air Circuit Breakers and Their Application
Jun 02, 2025