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Siemens CQD240 Molded Case Circuit Breaker
- 40A
- 2 Pole
- DIN Rail
Siemens
CQD240
Molded Case Circuit Breaker
Brand
Siemens
SKU
CQD240
Quantity
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Siemens CQD240 - 40A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the Siemens CQD240 provides 2-pole, 40A molded case circuit protection within the Sentron family. It delivers dependable thermal-magnetic trip functionality for branch circuits and equipment. This compact breaker installs onto standard 35mm DIN rails or mounts to surfaces within OEM panels and control enclosures. It includes factory-installed line and load lugs.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CQD240 |
| Series | CQD |
| Amperage | 40A |
| 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 |
| Frame Type | CQD |
|---|---|
| Terminal Type | Lugs |
| For Use With | DIN Rail Enclosures, OEM Panels |
| Wire Gauge | 14-6 AWG (Cu), 12-6 AWG (Al) |
| Max Wire | 6 AWG |
| Min Wire | 14 AWG (Cu), 12 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 | None included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, HID Rated, Non-Interchangeable Trip |
Product FAQs
6 answersHow is the Siemens CQD240 circuit breaker mounted?
The CQD240 is designed to be independently mounted on a customer-supplied DIN rail or bolted directly to a surface. It features line and load side lugs for feed-thru connections.
What is the difference between Siemens CQD and BQD circuit breakers?
While both share the same 1-inch per pole frame size, CQD breakers like the CQD240 have lugs on both the line and load ends for DIN rail or surface mounting. BQD breakers are designed for panelboard mounting and typically only have lugs on the load end.
Can the Siemens CQD240 be reverse fed?
Yes, Siemens CQD series circuit breakers, including the CQD240, are UL Listed for reverse feed applications.
Is the CQD240 breaker HACR rated?
Yes, this breaker is HACR marked, making it suitable for use with heating, air conditioning, and refrigeration equipment.
Can I add accessories like a shunt trip or auxiliary switch to the CQD240?
Yes, field-addable accessories such as shunt trips, auxiliary switches, and alarm switches are available for the CQD frame. These add-on modules attach to the left side of the circuit breaker.
Can the CQD240 be used on a 480V grounded B-phase delta system?
No, Siemens CQD breakers are not suitable for 3-phase delta 480V AC grounded B-phase applications.
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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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