Westinghouse | KA3090 | Circuit Breaker | 90A | 3-Pole | 600V | Bolt-On

Meet the Westinghouse KA3090: a rugged 90A, three-pole circuit breaker designed for demanding electrical environments. Built for maintenance, retrofit, and replacement tasks where exact specifications matter, this bolt-on breaker delivers secure mounting and reliable protection for three-phase circuits up to 600V.

Key specifications

• Amperage: 90A
• Poles: 3-Pole
• Voltage rating: 600V
• Mounting: Bolt-On

The KA3090 is chosen when compatibility is critical. The part number KA3090 is the best reference for ensuring the right form factor and performance in your panel or switchgear, especially in retrofit or replacement scenarios.

Why this Westinghouse KA3090 stands out

Designed for bolt-on mounting, this breaker provides a secure, vibration-resistant connection ideal for industrial applications where reliable interruption is essential. Its 3-pole configuration supports balanced three-phase protection, helping to safeguard motors, compressors, and other multi-phase equipment. With a generous 600V rating, it accommodates a wide range of commercial and light industrial power systems, making it a versatile choice for upgrading legacy setups or maintaining current installations.

Ideal applications

• Maintenance and replacement in legacy panels that require a bolt-on, three-pole solution
• Retrofit projects upgrading electrical protection without changing the panel footprint
• Industrial and commercial environments with three-phase loads up to 600V
• Critical power distributions where 90A protection ensures reliable performance

Compatibility and ordering notes

Before ordering, confirm fit and ratings for your specific equipment. The KA3090 part number is the best reference to ensure you’re matching the exact form factor and intended protection characteristics for your system.

Installation and safety tips

Installation should be performed by a qualified electrician in accordance with local electrical codes and the panel manufacturer's guidelines. Verify that your enclosure, conductors, and overall installation are rated for 600V and 90A, and follow the recommended torque and mounting procedures to maintain a secure, compliant connection.

With the Westinghouse KA3090, you get a purpose-built solution for reliable three-phase protection that ships ready for retrofit and replacement, helping you keep critical equipment online and protected.