Siemens CQD170 Molded Case Circuit Breaker
- 70A
- 1 Pole
- DIN Rail
Siemens
CQD170
Molded Case Circuit Breaker
Brand
Siemens
SKU
CQD170
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Siemens CQD170 - 70A 1 Pole Molded Case Circuit Breaker
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Description
Belonging to the Siemens Sentron family, the CQD170 is a 1-pole, 70A molded case circuit breaker engineered for commercial and industrial applications. It provides reliable thermal-magnetic overcurrent protection for branch circuits and equipment. This 1-inch wide breaker mounts onto standard DIN rails, making it an excellent choice for OEM panels and control enclosures. It features cable-in/cable-out lug connections. Rated at 14kAIC at 277VAC, this unit is HACR and reverse feed rated.Specifications
| Brand | Siemens |
|---|---|
| Series | CQD |
| Amperage | 70A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 120VAC, 240VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 14kA @ 277VAC, 14kA @ 125VDC |
| 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 |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
Product FAQs
6 answersWhat is the difference between Siemens CQD and BQD circuit breakers?
Both belong to the same Sentron frame group and share identical electrical characteristics, but the CQD170 is designed specifically for DIN rail mounting. BQD breakers are typically panelboard mounted or base mounted.
What type of mounting rail is required for the CQD170?
This breaker mounts directly onto a standard 35mm DIN rail. It is designed for feed-thru connections in OEM panels and industrial control enclosures without requiring a specialized panelboard bus.
Is the Siemens CQD170 suitable for direct current (DC) applications?
Yes, this breaker is rated for DC systems up to 125VDC, providing an interrupting capacity of 14kAIC at that voltage.
What wire sizes are compatible with the lugs on this 70A breaker?
The factory lugs accept 8 to 1 AWG copper wire or 6 to 1/0 AWG aluminum wire. Ensure adequate wire bending space in your DIN rail enclosure when routing maximum gauge conductors.
How does the interrupting rating scale across different voltage systems?
The breaker provides a high interrupting rating of 65kAIC on 120VAC or 240VAC systems. When applied at its maximum 277VAC rating, the interrupting capacity drops to 14kAIC.
Does the CQD170 provide ground fault or arc fault protection?
No, this is a standard thermal magnetic breaker featuring fixed long-time and instantaneous trip functions. It provides standard overload and short circuit protection but does not include equipment ground fault or arc fault circuitry.
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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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