Square D QOB3100VH1021 100A 3-Pole 3100 V Circuit Breaker

Square D QOB3100VH1021 is a purpose-built high-voltage circuit breaker engineered to protect demanding three-phase power systems. With a 100 A rating and a 3100 V maximum, this 3-pole device delivers reliable overcurrent protection for motors, drives, and feeders in industrial environments, helping to prevent costly faults and unplanned downtime.

• Three-pole protection ensures simultaneous interruption across all phases for balanced, safe fault clearance in three-phase networks.
• 3100 V voltage rating expands compatibility with higher-voltage industrial distribution, giving you a wider operating envelope for robust electrical protection.
• Exact part match for QOB3100VH1021 ensures reliable fit and seamless integration with Square D enclosures and the QOB family of breakers.
• Industrial-grade construction designed to withstand the rigors of demanding plant environments, providing dependable protection for critical assets.

Ideal use cases

• High-voltage feeders and three-phase circuits in manufacturing plants requiring dependable overcurrent protection.
• Motor control centers and large drives where precise interruption across all phases is essential for equipment safety.
• Industrial power distribution in facilities that operate at elevated voltage levels, seeking durable protection that travels with the system.

Why this model stands out

• Designed specifically for high-voltage, three-phase applications, the QOB3100VH1021 combines robust protection with a compact form factor compatible with Square D assemblies.
• By pairing a solid 100 A rating with a 3100 V capacity, it supports demanding loads while maintaining safe, controlled shutdowns in fault conditions.
• Choosing the exact part number simplifies maintenance and replacement, reducing downtime and ensuring continuity of critical operations.

Specifications at a glance

• Current rating: 100 A
• Poles: 3
• Voltage rating: 3100 V
• Part number: QOB3100VH1021

When planning installations or replacements, this Square D circuit breaker offers a precise, high-voltage solution that aligns with your three-phase protection needs. Its 3-pole configuration and 3100 V capability equip industrial facilities to safeguard motors, drives, and feeders with confidence, ensuring safer operation and improved uptime.