Square D | RLA36120CU33A | Circuit Breaker | 1200A | 3-Pole | 600V

Meet the Square D RLA36120CU33A Circuit Breaker — a high-capacity, three-pole protection device designed for demanding industrial panels. With a 1200A rating, a 3-Pole configuration, and a 600V operating range, this breaker delivers dependable overcurrent protection for three-phase systems. The model RLA36120CU33A is the best reference when you’re performing maintenance, retrofit, or replacement in existing Square D installations.

Key specifications at a glance

• Amperage: 1200A
• Poles: 3-Pole
• Voltage: 600V
• Part number: RLA36120CU33A
• Applications: maintenance, retrofit, and replacement where exact specs are required
• Compatibility note: Confirm fit and ratings before ordering; the part number is the strongest reference for panel compatibility

Why this Square D circuit breaker stands out

• Direct-fit for compatible Square D panels: Designed to integrate smoothly into existing Square D electrical distributions without compromising protection or form factor.
• Reliable three-phase protection: The 3-Pole configuration ensures synchronized switching across all phases, helping preserve balanced loads and system safety in 600V environments.
• High-current capability: 1200A rating supports heavy-duty circuits and feeders, making it suitable for demanding industrial applications.
• Clear compatibility reference: RLA36120CU33A is the most reliable identifier when matching breakers to panel catalogs and replacement schedules.

Ideal use cases

• Upgrading or replacing main or feeder breakers in industrial control panels and switchgear
• Retrofits in facilities with three-phase 600V electrical architectures
• Maintenance cycles where exact spec matching minimizes downtime and ensures continuous protection

Practical guidance for installation and compatibility

• Always confirm fit and ratings against your panel’s documentation before ordering. Even within the Square D family, exact part numbers ensure correct footprint and trip characteristics.
• Use the RLA36120CU33A reference to verify catalog listings, cross-references, and replacement timelines in your maintenance plan.
• Inspect mounting style and terminal connection type to guarantee seamless integration with existing wiring and bus configurations.
• Keep a spare, properly stored unit on hand for planned replacements to minimize panel downtime.

Specifications at a glance

• Amperage: 1200A
• Poles: 3-Pole
• Voltage: 600V
• Part number: RLA36120CU33A
• Ideal for maintenance, retrofit, and replacement in compatible Square D installations