Siemens Q2020 | 20/20A Tandem QT Duplex Plug-In Circuit Breaker

Main Description:

The Siemens Q2020 is a tandem (duplex) circuit breaker engineered to provide two independent 20A circuits in the space of a single breaker, making it an ideal space-saving solution for load centers that have reached their maximum circuit capacity. Designed for compatibility with Siemens Type EQ, EQL, SEQ, EQG, PL, and ES series load centers, this breaker offers reliable thermal magnetic protection and a simple plug-in configuration. Operating at 120 VAC with a 10 kA interrupting rating, the Q2020 is suitable for a wide range of residential and light commercial applications requiring additional circuits without expanding the panel size.

Technical Overview:

• Manufacturer: Siemens

• Brand: Siemens

• Part Number: Q2020

• Category: Circuit Breaker

• Subcategory: Tandem / Duplex Miniature Circuit Breaker

• Condition: New/Never Used Surplus

• Family: QT / Q Series

• Type: Type QT Duplex Low Voltage Miniature

• Actuator Type: Toggle

• Voltage Rating: 120 VAC

• Amperage Rating: 20A + 20A (Two independent poles)

• Total Load Capability: 40A across two circuits

• Number of Poles: 1 (Tandem two-pole functionality in single space)

• Phase: Single-Phase

• Frequency: 60 Hz

• Trip Type: Thermal Magnetic (Thermal/Magnetic)

• Interrupting Rating: 10 kA

• Connection Type: Plug-In

• Wire Size: 14–6 AWG

• Temperature Rating: 40°C

• Frame Type: QT

• Dimensions: 3 in L × 1 in W × 3 in H

• Certifications: UL Listed

• Applications: Panel space expansion, residential circuits, branch circuit protection

Key Features:

• Provides two independent 20A circuits in the space of one breaker

• Cost-effective solution for full load centers requiring extra circuits

• Plug-in design for quick installation

• Compatible with multiple Siemens load center families

• Thermal magnetic protection for both overload and short-circuit events

• 10,000A interrupt rating ensures dependable fault clearing

• Compact and efficient design ideal for residential and small commercial systems