ABB | S5N300TW-2 | Circuit Breaker | 300A | 2-Pole | 600V | Bolt-On

Meet ABB's S5N300TW-2 circuit breaker—a rugged, industrial-grade protection device designed for demanding panels and retrofit projects. Built to safeguard electrical feeders up to 300 amps at voltages up to 600 volts, this 2-pole bolt-on breaker delivers reliable, fast-acting overcurrent protection in a compact footprint.

• Amperage: 300 A continuous current capacity
• Poles: 2-Pole design for simultaneous disconnection of both live conductors
• Voltage rating: 600 V
• Mounting style: Bolt-On for secure, vibration-resistant installation

Why choose the S5N300TW-2 for maintenance, retrofit, or replacement?

• Precise compatibility reference: The part number is your strongest guide for matching characteristics and mounting footprint. Confirm fit and ratings before ordering.
• Efficient retrofits: Bolt-on mounting simplifies upgrades in existing panels where space and alignment are critical, reducing downtime during replacements.
• Balanced protection: The 2-pole configuration ensures both lines are protected and simultaneously disconnected, enhancing safety and code compliance.

Ideal use scenarios

• Retrofits in legacy ABB panels that require S5N-series breakers with the same amperage and voltage ratings
• Protecting feeders and main circuits in industrial control panels, machine rooms, and manufacturing lines
• Replacement of worn or obsolete breakers to restore reliable overcurrent protection without changing the panel layout

Practical considerations

• Before ordering, verify that the S5N300TW-2 matches your panel's slot size, bus configuration, and trip characteristics. The part number is your best compatibility reference.
• Check your wiring, torque requirements, and enclosure clearance to ensure a smooth installation and long service life.

With ABB's reputation for durable electrical protection, the S5N300TW-2 is built to endure challenging industrial environments while delivering consistent performance when it matters most. If you need a dependable bolt-on 300 A, 2-pole, 600 V circuit breaker that fits a retrofit or maintenance profile, this unit is designed for you.