ABB OS30FAJ12 - 30A, 3-Pole, Fused Disconnect Switch

When you need safe, reliable isolation for three-phase equipment, the ABB OS30FAJ12 delivers. This 30A, 3-Pole Fused Disconnect Switch is built for industrial and commercial environments where temporary power isolation must be achieved quickly and safely, even while loads are present.

Key specifications

• Amperage rating: 30 A
• Poles: 3-Pole
• Type: Fused Disconnect Switch
• Brand/Model: ABB OS30FAJ12

Why choose the ABB OS30FAJ12

Designed to deliver dependable disconnection under load, this switch supports proper lockout/tagout procedures, helping technicians work safely during maintenance and servicing. The fused design provides immediate overcurrent protection for connected equipment, reducing the risk of damage from short circuits or overloads. Built for durability, it stands up to daily use in busy electrical rooms, control panels, and equipment enclosures.

Use cases and applications

• Motor circuits and drives in manufacturing facilities
• Conveyor systems, pumps, and HVAC feeders in commercial buildings
• Service disconnects in electrical panels and control cabinets
• Maintenance shutdowns requiring verifiable isolation of power

What you gain with this solution

Rather than a simple switch, the OS30FAJ12 provides structured isolation with fuse protection, enabling safer maintenance windows and more predictable downtime planning. It reduces the risk of arcing and equipment damage by ensuring disconnection is achieved cleanly and reliably, even when circuits are energized.

Installation and safety notes

Install per local electrical codes and the equipment manufacturer's guidelines. Use compatible fuses and follow lockout/tagout procedures to maximize safety for personnel and equipment.