Schneider Electric QOB3305237 30A 3-Pole 240 V Circuit Breaker Potential Transformer

Meet the Schneider Electric QOB3305237: a compact, high-precision circuit breaker engineered for robust protection and seamless monitoring in modern electrical panels. With a 30 A rating, a 3-pole design, and a 240 V operating capacity, this unit is purpose-built for reliable three-phase protection while providing signal-ready capabilities through its integrated potential transformer.

Key features

• 30 A current rating: dependable protection for individual feeders and motor circuits without unnecessary nuisance tripping.
• 3-pole construction: synchronized protection across all three phases, ideal for balanced three-phase loads.
• 240 V operating voltage: suited for common commercial and industrial distribution setups where three-phase power is standard.
• Integrated potential transformer: enables accurate monitoring, metering, and protection signaling directly from the breaker to relays or power management systems.
• Part number clarity: QOB3305237 aligns with Schneider Electric’s QOB family for straightforward sourcing and panel compatibility.

Use cases

• Three-phase motor feeders in manufacturing facilities where real-time current data supports predictive maintenance and uptime.
• Commercial electrical distribution panels requiring both overcurrent protection and signal-ready monitoring for building automation systems.
• Data centers and engine rooms where precise protection coordination and reliable fault signaling are essential for continuous operation.

Why this model stands out

This Schneider Electric solution goes beyond basic protection by integrating a potential transformer, which streamlines the path from protection to monitoring. The result is faster fault diagnosis, easier integration with relays and meters, and reduced wiring complexity in complex panel configurations. By choosing QOB3305237, you’re selecting a trusted, globally supported component from Schneider Electric that aligns with standard QOB panel layouts and electrical codes demanding rigorous protection and accurate signal output.

Specifications at a glance

• 30 A
• 3
• 240 V
• Circuit Breaker with Potential Transformer
• QOB3305237
• Schneider Electric
• QOB

Installation and compatibility tips

Designed for use in Schneider Electric QOB-compatible panels and enclosures. Ensure proper mounting in a suitable 3-pole slot, verify alignment with busbars, and follow local electrical codes for torque and termination practices. Use this unit where you need both reliable overcurrent protection and accessible monitoring signals to support protective relays and metering hardware.