Siemens Q2020 Duplex Circuit Breaker 20A 120V 2-pole

Product Description

The Siemens Q2020 is a duplex single-pole circuit breaker designed for residential and light commercial electrical panels. The unit houses two independent 20-amp single-pole breakers in a single 1-inch wide assembly, with each pole occupying 0.5 inches of panel space. Rated at 120 volts, the Q2020 allows two separate 20-amp circuits to share one breaker slot in a compatible load center. Licensed electricians install this breaker as part of branch circuit protection in standard residential panelboards. The compact duplex format is suited for panels with limited space where additional circuits are needed without expanding the enclosure.

The Q2020 fits standard residential load centers and is commonly installed in homes, light commercial buildings, and multifamily units where panel space is at a premium. It is used to protect branch circuits feeding outlets, lighting, and small appliance circuits. The two independent poles operate separately, so tripping one breaker does not affect the other. This makes it a practical solution when two individual circuits must share a single slot position in the panelboard.

Key Features

• Duplex design fits two 20A single-pole circuits into one panel slot
• Each pole is independently operated and independently tripped
• 0.5 inches per pole for a combined 1-inch panel footprint
• 120V rating for standard residential branch circuit applications
• ITE/Siemens compatible load center fitment
• Sold individually (unit of measure: EA)

Compatibility

Designed as an OEM-style replacement and new-installation breaker for ITE and Siemens compatible residential and light commercial load centers accepting single-pole 0.5-inch-per-pole duplex breakers.

Installation Notes

Installation must be performed by a licensed electrician in accordance with NFPA 70 (National Electrical Code) and all applicable local codes. The main breaker or utility disconnect must be shut off and the panel de-energized before removing or installing any breaker. Verify panel compatibility before installation, as breaker-to-panel fit is critical for proper bus engagement and safe operation. Do not force the breaker into a panel for which it is not rated.

Technical Specifications

• Amperage per Pole: 20A / 20A
• Number of Poles: 2 independent single poles
• Voltage Rating: 120 volts
• Width per Pole: 0.5 inches
• Total Panel Width: 1 inch
• Weight: 2.57 pounds
• Package Quantity: 12 per package

Standard Information

• Brand: Siemens Industry Inc
• Manufacturer Part Number: Q2020