ABB OS100GJ12 - 100A, 600V, 3-Pole, Fusible, Disconnect Switch

Introducing the ABB OS100GJ12 Fusible Disconnect Switch—a purpose-built solution for reliable isolation and built-in overcurrent protection in demanding industrial and commercial settings. With a sturdy 3‑pole design, this unit delivers precise, safe control of three-phase circuits while providing dependable protection against electrical faults.

Key specifications

• Model: OS100GJ12
• Amperage: 100 A
• Voltage: 600 V
• Poles: 3-Pole
• Fused: Fusible

Why the OS100GJ12 stands out

Designed to consolidate isolation and protection in a compact footprint, this fusible disconnect switch simplifies panel design and maintenance. The integrated fuse element delivers immediate overcurrent protection, reducing the need for additional protective devices and helping to safeguard motors, wiring, and downstream equipment. Its rugged construction is built to withstand the rigors of both industrial floors and commercial electrical rooms, delivering consistent performance across critical switching operations.

Ideal uses

• Motor disconnects in manufacturing lines, conveyors, and processing equipment
• Panelboards requiring compact, fusible protection for three-phase circuits
• Branch circuit protection where space constraints demand an efficient, maintainable solution
• Retrofits and new installations in control panels and switchgear assemblies

What problems it solves

When motors or heavy loads need safe startup and reliable fault protection, the OS100GJ12 provides a single, integrated solution for both disconnection and current limiting. Its 3‑pole design ensures all phases are isolated simultaneously, reducing the risk of backfeed or lingering energized paths. This means quicker maintenance, safer servicing, and improved system uptime in environments that rely on continuous operation.

Practical guidance for best results

• Use with correctly rated fuse links to match the 100 A, 600 V specification for your load.
• Install by qualified electrical personnel following local codes and standards.
• Pair with compatible panels or switchgear to optimize space and wiring paths.
• Maintain a small stock of spare fuses to minimize downtime during fuse changes.

Whether upgrading existing equipment or equipping a new installation, the ABB OS100GJ12 Fusible Disconnect Switch delivers dependable isolation and protective performance in a compact, easy-to-maintain package. It’s a practical, trusted choice for motor control centers, panel-based protections, and branch circuits where reliability and space efficiency matter most.