CQD120 - 20Amp Circuit Breaker
- 20 Amp
- 14k @ 277VAC; 65k @ 120VAC
- 1 Pole
Purchase Options: New In Box
CQD120 - 20Amp Circuit Breaker Description
CQD120 - 20Amp Circuit Breaker
The CQD120 Siemens CQD miniature circuit breaker is a 20 Amp, 1-pole breaker used in everyday commercial and industrial electrical panels where individual 277V circuits need reliable protection. You’ll typically see this type of breaker in lighting panels, control cabinets, and distribution boards, especially in buildings that rely on organized DIN rail layouts for clean installation and easy maintenance.
This unit is rated for 277VAC applications and provides a 14kA interrupting capacity, making it suitable for standard branch circuit protection in commercial environments. The compact 1-pole design helps save space inside tight panels while still handling the everyday lighting and control loads these systems depend on.
At the end of the day, it’s a simple, familiar breaker that does a very specific job—keeping individual circuits protected in panels where consistency, space savings, and easy replacement matter.
Key Features and Benefits
- 20 Amp, 1-pole breaker for 277V branch circuits
- Designed for Siemens CQD DIN rail systems
- 14kA interrupting rating for standard protection needs
- Compact design for tight panel spaces
- DIN rail mount for quick installation and replacement
- Common in lighting and control panel applications
- Used in commercial and industrial electrical systems
- Suitable for maintenance, retrofit, and new installations
- Supports organized multi-breaker layouts
- Straightforward branch circuit protection
Technical Specifications
- Catalog Number: CQD120
- Product Type: Miniature Circuit Breaker
- Series: CQD
- Amperage Rating: 20A
- Poles: 1
- Voltage Rating: 277VAC
- Interrupting Rating: 14kA
- Mounting Type: DIN Rail
- Application: Branch circuit protection
- Net Weight: approx. 0.741 lb
Material Compliance and Certifications
The CQD120 Siemens breaker is built to applicable UL and IEC standards for low-voltage circuit protection equipment. It is intended for installation in compatible DIN rail enclosures and should always be installed by qualified electrical personnel in accordance with applicable electrical codes and manufacturer guidelines.
Where It Works Best
- Commercial lighting panels
- Industrial control cabinets
- 277V branch circuit systems
- DIN rail distribution boards
- Electrical panel maintenance and upgrades
- Building automation systems
- Tight-space electrical enclosures
- Siemens-compatible installations
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.
Specifications
- Width:1.0
- Height:4.9
- Depth:2.88
- Poles:1
- Amperes:20
- A.I.C. Rating & Volts:14k @ 277VAC; 65k @ 120VAC
- Type:CQD
- Approx Dimensions:1.00"W x 4.9"L x 2.88"D
- Additional Notes:40°C, HACR rated, 33mm DIN Rail Mountable, Cable In - Cable Out, Molded Case Circuit Breaker,
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
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CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).