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CQD320
The CQD320 circuit breaker from Siemens is designed for low voltage applications, operating efficiently at 480/277 VAC. This model supports three poles with a rated current of 20A, featuring a thermal-magnetic trip mechanism and a robust interrupt rating of 14 kA.
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Technical specifications for CQD320
| Manufacturer | Siemens |
|---|---|
| Product Type | Low Voltage Molded Case Circuit Breaker |
| Product Line | CQD Series |
| Part Number | CQD320 |
| UPC | 783643277748 |
| Voltage Rating | 480/277 VAC |
| Amperage Rating | 20A |
| Poles | 3 Poles |
| Trip Range | Thermal-Magnetic |
| Interrupt Rating | 14 kA |
| Nominal Frequency | 50/60 Hz |
| Phase | 3-Phase |
| Mounting Type | DIN Rail Mounting |
| Operating Handle | Manual Toggle with Trip Indication |
| Wire Range | #14 – #8 AWG Cu/Al |
| Terminal Type | Screw Clamp Terminals |
| Temperature (Ambient) Rating | 40 °C |
| Certification | UL 489 |
The Siemens CQD320 is a low voltage molded case circuit breaker engineered to provide reliable protection for electrical circuits. This breaker operates at a voltage rating of 480/277 VAC and is rated for 20A. It consists of three poles, making it suitable for 3-phase configurations. The thermal-magnetic trip range ensures effective response to overload and fault conditions, with an interrupt rating of 14 kA to handle fault currents.
Designed for convenience, the CQD320 employs a DIN rail mount style, which simplifies installation in panels. Users will find the manual toggle handle intuitive, as it not only facilitates operations but also features trip indication for monitoring purposes. The circuit breaker is adept at accommodating wire sizes between #14 and #8 AWG, whether using copper or aluminum conductors. Furthermore, the CQD320 complies with UL 489 certification, affirming its safety and performance standards. Built to operate in ambient temperatures of up to 40 °C, this versatile circuit breaker is an essential component for both industrial and commercial applications.
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