BRKR QD 3/4 2P 120/240V 20A

🔌 What it is

The BRKR QD 3/4 2P 120/240V 20A is a Siemens plug-in circuit breaker used in residential and light commercial electrical panels.

It is a 20-amp, 2-pole breaker designed for 240V circuits.

🧾 What the label means

• BRKR → Circuit breaker
• QD → Siemens Type QD plug-in breaker series
• 3/4 → QD “¾-inch frame” style plug-in format
• 2P → Two-pole (handles both hot legs together)
• 120/240V → Works on split-phase residential power
• 20A → 20-amp rating

⚡ What it does

This breaker:

• Protects a 240V or multi-wire 120/240V circuit
• Trips on overload or short circuit conditions
• Disconnects both legs simultaneously (common trip)
• Installs in Siemens QD-compatible load centers

Typical loads include:

• Small 240V motors
• HVAC controls or small condensers
• Dedicated equipment circuits
• Specialty lighting or transformer-fed loads
• Sometimes used for shared neutral (multi-wire branch) circuits

🏠 Typical uses

• Residential breaker panels
• Light commercial distribution panels
• Dedicated 240V equipment circuits
• Shop or utility circuits
• Control transformers or small HVAC loads

🧠 Simple explanation

This is a 20-amp double breaker that shuts off both sides of a 240V circuit if something overloads or shorts out.