GE | TM40D-3P | Circuit Breaker

Engineered for dependable protection in 3-phase electrical systems, the GE TM40D-3P circuit breaker is a precise, mission-critical component for maintenance, retrofit, and replacement projects where exact compatibility matters. If your goal is to keep GE-based panels performing reliably with minimal downtime, this part is built to fit and function as intended.

The TM40D-3P carries a unequivocal identity within the GE TM family: a 3-pole configuration designed to interrupt all phases in a three-phase circuit, delivering coordinated protection across the system. This ensures balanced protection, reduces the risk of system imbalances, and helps maintain safe operation in commercial and industrial environments.

Why this specific part matters for your project comes down to compatibility and consistency. The part number TM40D-3P is the definitive reference for fit and ratings, making sourcing straightforward and aligning with GE’s protective trip characteristics. Before you order, use the TM40D-3P as your compatibility checkpoint to ensure seamless integration with your existing panel, bus configuration, and protective settings.

Key benefits and practical advantages

• Definitive compatibility reference: Use TM40D-3P to verify fit with GE TM-series panels and associated electrical configurations, reducing guesswork during replacement or retrofit.
• Three-phase protection: 3-pole design ensures simultaneous interruption across all live conductors, preserving system balance and safeguarding downstream equipment.
• Maintenance-friendly replacement: Matches the original mounting footprint and electrical characteristics, enabling quick swaps with minimal panel downtime.
• Retrofit-ready for upgrades: Ideal for updating aging panels or expanding circuit protection without a full panel overhaul.
• Reliable protection alignment: GE’s trusted protection profile helps maintain consistent trip behavior within existing safety margins.

Ideal use scenarios include service and retrofit work on GE TM-series panels in manufacturing facilities, commercial buildings, data centers, and utility rooms where stable, proven three-phase protection is essential. It’s particularly valuable for technicians who rely on precise part matching to avoid compatibility issues and warranty concerns.

Important note: Always confirm the exact specifications for your application. The TM40D-3P part number is the best reference for compatibility and ratings, and double-checking fit before ordering helps ensure a smooth, trouble-free installation.