Square D QOB2201021 - 20 A, 2-Pole Bolt-On Circuit Breaker | AmpState

Square D QOB2201021 is a 20A, 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. With a secure bolt-on mounting, it creates a rigid, vibration-resistant bond to the bus, reducing loosening and travel during operation.

The unit features a thermal-magnetic trip system that provides stable, repeatable protection—tripping quickly on short circuits and moderating heat-based overloads for long-term reliability. This means fewer nuisance trips and more consistent electrical performance in dynamic environments.

• Bolt-on mounting ensures a tight bus connection that resists vibration and movement in busy electrical rooms.
• Thermal-magnetic protection covers both overloads and short circuits for robust safety.
• 2-pole, 20A rating provides reliable protection for branch circuits in residential, commercial, and light industrial panels.
• OEM-compatible with matching Square D load centers and panelboards for straightforward replacement and upgrades.
• Molded case construction delivers durable performance in harsh environments, with consistent trip characteristics across temperature ranges.

Where and how you’ll use it

Ideal for new installations or panel upgrades where secure, permanent protection is required. This breaker slides into compatible Square D panelboards and load centers, making it a practical choice for electricians, facilities managers, and property maintenance teams concerned with reliability and safety.

• Residential service panels requiring reliable 20A protection on critical circuits like lighting, outlets, or small appliance branches.
• Commercial spaces with light loads and moderate electrical demand, where a compact, bolt-on 2-pole breaker helps keep panel configurations neat and serviceable.
• Light industrial environments needing dependable short-circuit protection without sacrificing install ease.

Technical snapshot: Manufacturer — Square D; Part Number — QOB2201021; Type — Thermal-magnetic molded case circuit breaker; Poles — 2; Amperage — 20A; Mounting — Bolt-on; Application — Branch circuit overcurrent and short-circuit protection.

By choosing the Square D QOB2201021, you’re opting for a proven protection device that aligns with OEM equipment, supports straightforward maintenance, and helps maintain electrical system integrity across a range of settings. Trust AmpState to provide genuine Square D components and dependable after-sales support.