ITE QP3B020 20A 3P 240V Circuit Breaker, Plug-On | AmpState

The ITE QP3B020 is a rugged, plug-on circuit breaker designed for everyday electrical protection in panelboards, load centers, and electrical distribution networks. With a 3-pole configuration and a 20 A rating at 240 V, this device provides reliable protection for multi-phase circuits while simplifying replacement and maintenance tasks.

Key details that matter for installers

• Amperage: 20 A — ample protection for standard branch circuits without nuisance tripping.
• Poles: 3 poles — ideal for 3-phase distribution systems common in commercial and industrial setups.
• Voltage: 240 V — suitable for typical US and compatible electrical distributions.
• Type: Plug-On — quick, tool-free installation into compatible panelboards and load centers.
• Brand & Part: ITE QP3B020 — a direct-match replacement that helps keep your BOM aligned to the original part number.

Why this model stands out

This QP3B020 breaker is specifically suited for replacement projects where maintaining the original circuit protection scheme is important. Its plug-on design means faster swaps with fewer installation steps, reducing downtime on service panels and distribution boards. Using the exact part number helps preserve documentation, maintenance records, and compatibility with existing labeling and safety certifications.

Who benefits most

• Electrical contractors performing panel upgrades, repairs, or routine maintenance
• Facilities managers maintaining commercial or light industrial distribution systems
• HVAC, data center, and manufacturing environments that rely on dependable three-phase protection
• Maintenance technicians stocking spares to ensure BOM fidelity

Practical use cases

• Replacement in existing panelboards where the QP3B020 is the original specification

• Stocking a spare that preserves the original BOM and minimizes compatibility concerns during emergencies

• Quick upgrades or repairs in 3-phase electrical distributions where a 20 A, 240 V protection device is required

How it compares to alternatives

Compared to generic breakers, the ITE QP3B020 provides a precise match for original installations, ensuring seamless compatibility with your current panel labeling and protection scheme. The plug-on design reduces installation time and simplifies field service, while the 3-pole 240 V configuration aligns with multi-phase distribution needs.

Support and compatibility

Need help confirming fit? AmpState offers guidance to verify part-number compatibility and installation fit. Message us and we’ll help you confirm that QP3B020 is the right choice for your panelboard or load center configuration.

Equip your electrical distribution with a dependable, ready-to-install 3P 20A 240V plug-on breaker that keeps your BOM intact and your maintenance routines efficient.