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QO120-1021 | Square D 20A 1-Pole 120/240V Thermal Magnetic Miniature Circuit Breaker
- Regular price
- $252.00
- Sale price
- $252.00
- Regular price
-
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Product Description P/N: QO120-1021
Description
The Square D QO120-1021 is a 1-pole thermal magnetic miniature circuit breaker engineered for reliable overcurrent and short-circuit protection. Rated at 20 amps and 120/240VAC, it supports both AC and DC applications up to 48VDC. Featuring a plug-in connection and quick-make, quick-break toggle mechanism, this breaker is ideal for residential, commercial, and light industrial electrical distribution systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Square D |
| Category | Circuit Protection |
| Part Number | QO120-1021 |
| Subcategory | Miniature Circuit Breakers |
| Series | QO |
| Type | Thermal Magnetic |
| Rated Current | 20 A |
| Rated Voltage | 120/240 V AC, 48 V DC |
| Interrupting Rating | 10 kAIC @ 120/240 V |
| Number of Poles | 1 |
| Trip Functions | Long-Time and Instantaneous (LI) |
| Connection Type | Plug-In |
| Mounting Style | Plug-On |
| Wire Size Range | 14–8 AWG Copper/Aluminum |
| Actuator Type | Paddle Toggle |
| Operating Temperature | 40 °C |
| Certifications | UL Listed, CSA Certified |
| Dimensions (H x W x D) | 3.0 x 1.5 x 2.9 in |
| Weight | 0.639 lb (0.29 kg) |
Information About QO120-1021
The QO120-1021 is part of the Square D QO Series, known for its durable construction and superior protection performance. Designed for use with QO load centers and NQ panelboards, it ensures compatibility and easy installation in standard power distribution systems. The breaker features long-time and instantaneous trip functions for dependable overload and fault protection, along with VisiTrip indication, which provides a clear visual cue when the breaker has tripped. With UL and CSA certifications, it meets the highest standards for safety and performance in electrical distribution environments.
Key Features:
- Thermal-Magnetic Protection: Dual-function protection against overloads and short circuits.
- Rated Current: 20A continuous current capacity for reliable single-pole circuit protection.
- Voltage Rating: Operates at 120/240VAC and 48VDC for versatile application use.
- Interrupting Capacity: 10kAIC at 120/240V ensures safe fault interruption capability.
- VisiTrip Indicator: Provides a visible red indicator window when the breaker has tripped.
- Mounting Style: Plug-in design enables quick and secure installation.
- Wire Compatibility: Accepts 14–8 AWG copper or aluminum conductors.
- Certifications: UL Listed and CSA Certified for compliance with North American safety standards.
The QO120-1021 delivers the reliability and precision required for consistent power protection in residential and commercial electrical systems.
Description
The Square D QO120-1021 is a 1-pole thermal magnetic miniature circuit breaker engineered for reliable overcurrent and short-circuit protection. Rated at 20 amps and 120/240VAC, it supports both AC and DC applications up to 48VDC. Featuring a plug-in connection and quick-make, quick-break toggle mechanism, this breaker is ideal for residential, commercial, and light industrial electrical distribution systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Square D |
| Category | Circuit Protection |
| Part Number | QO120-1021 |
| Subcategory | Miniature Circuit Breakers |
| Series | QO |
| Type | Thermal Magnetic |
| Rated Current | 20 A |
| Rated Voltage | 120/240 V AC, 48 V DC |
| Interrupting Rating | 10 kAIC @ 120/240 V |
| Number of Poles | 1 |
| Trip Functions | Long-Time and Instantaneous (LI) |
| Connection Type | Plug-In |
| Mounting Style | Plug-On |
| Wire Size Range | 14–8 AWG Copper/Aluminum |
| Actuator Type | Paddle Toggle |
| Operating Temperature | 40 °C |
| Certifications | UL Listed, CSA Certified |
| Dimensions (H x W x D) | 3.0 x 1.5 x 2.9 in |
| Weight | 0.639 lb (0.29 kg) |
Information About QO120-1021
The QO120-1021 is part of the Square D QO Series, known for its durable construction and superior protection performance. Designed for use with QO load centers and NQ panelboards, it ensures compatibility and easy installation in standard power distribution systems. The breaker features long-time and instantaneous trip functions for dependable overload and fault protection, along with VisiTrip indication, which provides a clear visual cue when the breaker has tripped. With UL and CSA certifications, it meets the highest standards for safety and performance in electrical distribution environments.
Key Features:
- Thermal-Magnetic Protection: Dual-function protection against overloads and short circuits.
- Rated Current: 20A continuous current capacity for reliable single-pole circuit protection.
- Voltage Rating: Operates at 120/240VAC and 48VDC for versatile application use.
- Interrupting Capacity: 10kAIC at 120/240V ensures safe fault interruption capability.
- VisiTrip Indicator: Provides a visible red indicator window when the breaker has tripped.
- Mounting Style: Plug-in design enables quick and secure installation.
- Wire Compatibility: Accepts 14–8 AWG copper or aluminum conductors.
- Certifications: UL Listed and CSA Certified for compliance with North American safety standards.
The QO120-1021 delivers the reliability and precision required for consistent power protection in residential and commercial electrical systems.