ABB OS100GJ03 - 100A, 600V, 3-Pole, Fusible, Disconnect Switch

ABB OS100GJ03 is a rugged 3-pole fusible disconnect switch engineered for reliable on/off isolation and precise overcurrent protection in demanding industrial and commercial environments. With a 100A rating and a 600V maximum, this compact device delivers secure separation of power and protection where it matters most—without sacrificing space or ease of service.

Key advantages that set it apart

• Three-pole isolation: Ensures all three phases are reliably disconnected, preventing partial energization and safeguarding connected equipment.
• Fusible protection: Integrated fusible capability provides fast, coordinated interruption during fault conditions, aligning with protection schemes for motors and feeders.
• 100A, 600V compatibility: Suitable for a wide range of industrial motors, panelboard feeders, and branch circuits that require a compact yet capable disconnect switch.
• Compact, maintainable design: Designed for tight control panels with straightforward fuse access and replacement, minimizing downtime during maintenance.
• Versatile applications: Ideal for motor disconnects, panelboard protection, and branch-circuit safety in both new installations and retrofits.

Practical applications and use cases

Install the OS100GJ03 in electrical cabinets and switchgear where dedicated motor disconnects or feeder protection are required. Use it to reliably isolate large pumps, conveyors, fans, or other three-phase equipment during maintenance, start-up sequencing, or fault conditions. Its fusible design supports coordinated protection schemes, helping you control fault energy and maintain safe, serviceable systems.

Specifications at a glance

• Model: OS100GJ03
• Amperage: 100 A
• Voltage: 600 V
• Poles: 3-Pole
• Fusible: Fusible

Why choose ABB for this disconnect switch

ABB’s engineering heritage brings dependable performance, predictable fault behavior, and ease of maintenance to every installation. The OS100GJ03 is built to integrate with standard electrical architectures, delivering consistent protection and straightforward service in manufacturing facilities, processing plants, and critical commercial environments.