BRKR QD 3/4 2P 120/240V 30A

🔌 What it is

The “BRKR QD 3/4 2P 120/240V 30A” is a Siemens plug-in circuit breaker designed for use in Siemens load centers.

It is a 30-amp, 2-pole breaker that protects 240V circuits (or 120/240V split-phase loads).

🧾 What the label means

• BRKR → Circuit breaker
• QD → Siemens QD plug-in breaker series (residential load centers)
• 3/4 → Refers to Siemens “3/4-inch space / QD frame style” (often called ¾-inch breaker format in catalogs)
• 2P → Two-pole breaker (ties both legs together)
• 120/240V → Works on standard residential split-phase power
• 30A → 30 amp rating

⚡ What it does

This breaker:

• Provides overcurrent protection for a 240V circuit
• Trips both hot legs together (2-pole common trip)
• Fits Siemens QD/QP compatible load centers
• Used for dedicated 30A equipment loads

Common loads include:

• Electric water heaters
• Small HVAC equipment
• Shop machinery
• EV charging (lower-power EVSE setups like 24–32A units)
• Subfeed circuits

🏠 Typical uses

• 240V branch circuits in residential panels
• Garage or workshop circuits
• Dedicated appliance circuits
• Light commercial equipment loads

🧠 Simple explanation

This is a 30-amp double breaker that shuts off both sides of a 240V circuit if there’s an overload or short circuit.