Square D QOB220EPD2100 20A 2-Pole 240 V Circuit Breaker

The Square D QOB220EPD2100 is a dependable 20 A, 2-Pole 240 V circuit breaker designed to protect 240-volt circuits in compatible Square D panels. With its two-pole configuration, it safely disconnects both hot legs to guard wiring and connected equipment from overloads and short circuits, delivering reliable protection for your most demanding 240V loads.

Key specifications at a glance

• Part number: QOB220EPD2100
• Current rating: 20 A
• Poles: 2
• Voltage rating: 240 V

Why this 2-pole, 240V breaker stands out

engineered for Square D panels that accept the QOB series, this breaker offers precise, instant protection for circuits that require 240 volts. The dual-pole design ensures both hot lines are interrupted simultaneously, which is essential for safety and compliance when safeguarding 240V appliances and equipment. By using this exact part, you maintain the intended electrical characteristics and fit, reducing compatibility concerns during replacement or upgrades.

Ideal use cases

Think of 240V circuits that power essential home or small-business equipment. The QOB220EPD2100 is well-suited for:

• Central air conditioning units and 240V HVAC components
• Large pumps and fans that run on 240V systems
• Dedicated 240V circuits for baseboard heaters or other 240V loads

Compatibility and installation notes

• Designed to fit Square D panels that support QOB-series breakers
• Use in applications where a 20A, 240V two-pole protection device is appropriate
• Follow the panel manufacturer’s guidance for proper seating and torque to ensure a secure connection

Practical guidance and best practices

• Keep a compatible replacement on hand to minimize downtime in the event of nuisance trips or wear
• Verify that the load on the circuit aligns with a 20A rating to prevent nuisance trips or insulation stress
• When replacing, ensure you’re matching the breaker type (QOB-series) to preserve panel performance and safety ratings
• Always power down the main disconnect and test for absence of voltage before beginning any internal work