LM21000 | Circuit Breaker | 900A | 2-Pole | 600V

LM21000 is an industrial‑grade circuit breaker designed for maintenance, retrofit, and replacement tasks where exact specifications matter. With a 900A rating, two poles, and a 600V operating range, this device delivers reliable protection for heavy electrical circuits in demanding environments.

Key specifications

• Amperage: 900A
• Poles: 2-Pole
• Voltage: 600V

What makes LM21000 unique

Because the part number LM21000 is the best reference for compatibility, this breaker is a precise, drop‑in replacement for existing installations that require the same footprint and ratings. It’s engineered to simplify retrofits and replacements in industrial panels, helping you minimize downtime while preserving electrical protection and system reliability.

Ideal use cases

• Maintenance on aging switchgear and panels that rely on 2‑pole, 600V breakers
• Retrofit projects where 900A capacity is needed to support higher loads
• Spare parts stock for critical infrastructure to reduce downtime during outages

Important compatibility note

Always confirm fit and ratings before ordering. The LM21000 is intended for systems that match its amperage, pole configuration, and voltage rating. Using the correct part number is the most reliable way to ensure seamless installation.

Practical tips for installation and maintenance

• Verify the panel or switchgear’s bus bar size and mounting footprint to ensure an exact fit
• Follow proper lockout/tagout procedures during replacement to maintain safety
• Store spare LM21000 units in a clean, dry environment to prevent corrosion and contamination