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Siemens CQD270 Molded Case Circuit Breaker
- 70A
- 2 Pole
- DIN Rail
Siemens
CQD270
Molded Case Circuit Breaker
Brand
Siemens
SKU
CQD270
Quantity
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Siemens CQD270 - 70A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial power distribution, this 70A, 2-pole MCCB belongs to the Siemens BQD/CQD frame group. The compact design is ideal for OEM equipment. The CQD270 installs onto standard DIN rails within compatible enclosures. It includes factory-installed line and load lugs, supporting 8-1 AWG copper or 6-1/0 AWG aluminum conductors. With a 65kAIC rating at 240V and 14kAIC at 480Y/277V, it ensures excellent fault clearing. This thermal-magnetic breaker is HACR and reverse feed rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CQD270 |
| Series | CQD |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | DIN Rail |
| Voltage | 120VAC, 240VAC, 480Y/277VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 14kA @ 480Y/277VAC, 14kA @ 125/250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | DIN Rail Enclosures |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
6 answersWhat is the difference between Siemens CQD and BQD circuit breakers?
While both share the same internal mechanisms and 1-inch per pole spacing, their mounting methods differ. The CQD series is designed for 35mm DIN rail or surface mounting in control panels, whereas the BQD series is designed to be bolted into Siemens panelboards.
How is the Siemens CQD270 circuit breaker mounted?
The CQD270 is designed to be independently mounted on a standard 35mm DIN rail or bolted directly to a surface. This makes it ideal for OEM control panels and enclosures.
Is the CQD270 suitable for reverse feed applications?
Yes, Siemens CQD molded case circuit breakers are UL Listed for reverse feed applications.
What field-installable accessories are compatible with the CQD270?
The CQD frame supports add-on modules such as shunt trips, auxiliary switches, and alarm switches. These operational devices are contained within a module that attaches to the left side of the breaker.
Is the CQD270 HACR rated?
Yes, Siemens CQD breakers from 15A to 100A are HACR marked, making this 70A breaker suitable for heating, air conditioning, and refrigeration equipment.
Can the CQD270 be used in direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is suitable for DC control circuits and battery systems, carrying a 14kA interrupting rating at 125/250VDC.
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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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1 review
- LSLuis S.ReviewingSiemens CQD350 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/29/17Excellent service
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