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Siemens CQD390 Molded Case Circuit Breaker
- 90A
- 3 Pole
- DIN Rail
Siemens
CQD390
Molded Case Circuit Breaker
Brand
Siemens
SKU
CQD390
Quantity
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Siemens CQD390 - 90A 3 Pole Molded Case Circuit Breaker
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Description
Built for demanding electrical environments, the Siemens CQD390 is a 3-pole, 90A molded case circuit breaker from the Sentron series. It delivers a 14 kAIC interrupt capacity at 480Y/277V and is fully HACR rated for heating and cooling applications. The breaker features a trip-free mechanism and reverse feed capability, offering versatile installation options. Designed for DIN rail mounting, it integrates perfectly into OEM panels and industrial enclosures.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CQD390 |
| Series | CQD |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | DIN Rail |
| Voltage | 120VAC, 240VAC, 480Y/277VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 14kA @ 480Y/277VAC, 14kA @ 125/250VDC |
| Frame Type | CQD |
|---|---|
| Terminal Type | Lugs |
| For Use With | DIN Rail Enclosures, OEM Panels |
| Wire Gauge | 8-1 AWG (Cu), 6-1/0 AWG (Al) |
| Max Wire | 1 AWG (Cu), 1/0 AWG (Al) |
| Min Wire | 8 AWG (Cu), 6 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, RoHS, UL 489 |
| Approval | CSA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Reverse Feed, Common Trip, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
6 answersWhat type of enclosures or panels accept the Siemens CQD390?
The CQD390 is designed for DIN rail mounting and integrates seamlessly into OEM control panels and standard DIN rail enclosures.
Can the CQD390 be used in DC electrical systems?
Yes, this breaker is rated for use in DC applications up to 125/250VDC with an interrupting capacity of 14kAIC.
Is the Siemens CQD390 suitable for HVAC equipment?
Yes, this breaker is fully HACR rated, making it suitable for heating, air conditioning, and refrigeration applications.
Does the CQD390 support reverse feeding?
Yes, this breaker features a trip-free mechanism and reverse feed capability, allowing for versatile installation options.
How does the Siemens CQD series differ from the BQD series?
While both are compact molded case circuit breakers in the Sentron family, BQD breakers are designed for panel mounting, whereas CQD breakers are specifically designed for DIN rail mounting.
What type of wire connections does the CQD390 use?
It features a feed-thru connection type and includes standard line and load lugs that accept 8 to 1 AWG copper or 6 to 1/0 AWG aluminum wire.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- LSLuis S.ReviewingSiemens CQD350 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/29/17Excellent service
Ill recommend super breakers
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