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Siemens CQD340 Molded Case Circuit Breaker
- 40A
- 3 Pole
- DIN Rail
Siemens
CQD340
Molded Case Circuit Breaker
Brand
Siemens
SKU
CQD340
Quantity
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Siemens CQD340 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens CQD340 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | CQD340 |
| Series | CQD |
| Amperage | 40A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | DIN Rail Enclosures |
| 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 |
|---|---|
| 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, HID Rated, Reverse Feed, Non-Interchangeable Trip, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Quantity
Siemens CQD340 - 40A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | CQD |
| Amperage | 40A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | DIN Rail Enclosures |
| 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 |
|---|---|
| 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, HID Rated, Reverse Feed, Non-Interchangeable Trip, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
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Description
The CQD340 is a 3-pole, 40A molded case circuit breaker from the Siemens Sentron family. It provides dependable long-time and instantaneous (LI) protection for industrial applications. This unit installs onto standard DIN rails, making it ideal for OEM panels and control enclosures. It accepts 14-6 AWG copper wire via included lug terminals. Rated for 14 kAIC at 480Y/277VAC, the breaker is HACR and reverse feed rated. The compact CQD frame ensures efficient space utilization.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CQD340 |
| Series | CQD |
| Amperage | 40A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | DIN Rail Enclosures |
| 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 |
|---|---|
| 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, HID Rated, Reverse Feed, Non-Interchangeable Trip, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
7 answersHow does the Siemens CQD340 mount inside an enclosure?
The CQD340 is designed to snap directly onto a standard 35mm DIN rail. It features a feed-thru (cable-in/cable-out) connection design, making it ideal for control panels and OEM enclosures without requiring a specialized panelboard bus.
What is the difference between Siemens CQD and BQD circuit breakers?
While both share the same 100A maximum frame size and electrical characteristics, their mounting methods differ. The CQD series is designed for DIN rail mounting, whereas the BQD series is designed for panelboard mounting or standard bolt-on applications.
Is the CQD340 suitable for use with heating, air conditioning, and refrigeration equipment?
Yes, this breaker is HACR rated, meaning it is tested and approved for the specific inrush currents and operational demands of heating, air conditioning, and refrigeration motor loads.
Can the CQD340 be reverse fed?
Yes, this thermal magnetic circuit breaker is reverse feed rated, allowing power to be supplied to either the line or load terminals without compromising its protective functions.
Are field-installable accessories available for the CQD340?
Yes, the Siemens CQD frame supports various internal accessories, including shunt trips and auxiliary switches. These accessories are typically installed on the side of the breaker to provide remote tripping or status signaling capabilities.
What wire sizes are compatible with the included lugs on the CQD340?
The factory-installed line and load lugs accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire. Ensure proper torque specifications are followed during installation for a secure connection.
Does this breaker support direct current (DC) applications?
Yes, in addition to its AC ratings, the CQD340 is rated for 125/250VDC applications with a 14kA interrupting capacity, making it versatile for both alternating and direct current control circuits.
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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
Ill recommend super breakers
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