Schneider Electric BGL36045 45A 3-Pole 347 V Circuit Breaker Potential Transformer

Schneider Electric BGL36045 is a purpose-built 45 A, 3-pole circuit breaker designed for reliable protection of three-phase power systems operating up to 347 V. With Part Number BGL36045, this unit integrates into Schneider Electric panels and distribution boards, delivering precise, synchronized disconnect across all phases when faults occur. While the model name includes “Potential Transformer,” its core role is robust overcurrent protection in systems that may also utilize protective relays and metering arrangements in three-phase networks.

What makes the BGL36045 stand out

• 45 A continuous rating: targeted protection for medium-to-heavy feeders and motors without nuisance tripping.
• 3-pole configuration: guarantees simultaneous isolation of all three phases, reducing arcing risk and unbalance during fault conditions.
• 347 V voltage rating: suitable for common commercial and many industrial three-phase mains, providing safe operation and clear fault isolation at expected voltages.
• Thermal-magnetic trip behavior: fast response to overloads and short circuits, helping to prevent equipment damage and downtime.
• Designed for Schneider Electric ecosystems: easy replacement or upgrade within existing BGL-series panels and compatible enclosures, ensuring consistent performance and streamlined maintenance.

Ideal use cases

• Three-phase feeders in commercial buildings, manufacturing floors, and data-center auxiliary power rooms.
• Motor control circuits and pump banks where coordinated phase protection reduces equipment wear and unexpected shutdowns.
• Panelboard upgrades or replacements where a reliable, standard-compatible 3-pole breaker is required.

Why operators choose this model

For engineers and maintenance teams, the BGL36045 offers predictable protection in a compact, field-friendly package. Its three-pole design provides cohesive protection across all phases, helping meet coordination and safety goals in modern electrical distributions. When paired with corresponding protective relays and metering infrastructure that leverage potential transformer data, this breaker fits neatly into comprehensive protection strategies without stray variables or mismatched components.

Practical guidance

• Verify system voltage is within the 347 V rating before installation.
• Ensure the load current does not exceed 45 A to maintain reliable protection without nuisance trips.
• Inspect connections for secure torque and cleanliness to uphold optimal switching performance.
• Use as part of an integrated Schneider Electric protection scheme for cohesive coordination with relays and metering devices.