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Siemens CQD350 Molded Case Circuit Breaker
- 50A
- 3 Pole
- DIN Rail
Siemens
CQD350
Molded Case Circuit Breaker
Brand
Siemens
SKU
CQD350
Quantity
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Siemens CQD350 - 50A 3 Pole Molded Case Circuit Breaker
New
Quantity
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Siemens CQD350 - 50A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | CQD350 |
| Series | CQD |
| Amperage | 50A |
| 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, Siemens P1, P2, P3 Panelboards |
| 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 | None included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
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Siemens CQD350 - 50A 3 Pole Molded Case Circuit Breaker
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Quantity
| Brand | Siemens |
|---|---|
| Series | CQD |
| Amperage | 50A |
| 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, Siemens P1, P2, P3 Panelboards |
| 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 | None included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
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Description
Engineered for commercial applications, the Siemens CQD350 provides robust overcurrent protection within the SENTRON family. This 50A, 3-pole molded case circuit breaker utilizes a fixed thermal-magnetic trip unit to handle demanding electrical loads. Designed for versatile installation, the breaker mounts onto standard DIN rails or fits into Siemens P1, P2, and P3 panelboards. Rated for 14 kAIC at 480Y/277VAC and 65 kAIC at 240VAC, this unit is both HACR and reverse feed rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CQD350 |
| Series | CQD |
| Amperage | 50A |
| 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, Siemens P1, P2, P3 Panelboards |
| 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 | None included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
9 answersWhich Siemens panelboards are compatible with the CQD350 breaker?
This breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as standard DIN rail enclosures. It utilizes a feed-thru connection rather than a bolt-on or plug-in design.
What wire sizes do the standard lugs on the CQD350 accept?
The factory-installed lugs accept 8 to 1 AWG copper wire or 6 to 1/0 AWG aluminum wire. Ensure proper torque specifications are followed during installation.
What is the difference between Siemens BQD and CQD circuit breakers?
While both share the same frame size and electrical ratings, the mounting methods differ. BQD breakers are designed for bolt-on panelboard mounting, whereas CQD breakers like the CQD350 are DIN rail mounted with feed-thru connections.
Is the CQD350 rated for direct current (DC) applications?
Yes, this thermal-magnetic breaker is rated for DC systems up to 125/250VDC with an interrupting capacity of 14kA.
Does the CQD350 require a specific mounting kit for DIN rail installation?
No additional mounting kit is required for standard 35mm DIN rail installation. The breaker features an integrated DIN rail clip on the back of the molded case.
Is the CQD350 circuit breaker suitable for reverse feed applications?
Yes, Siemens CQD series breakers are UL listed for reverse feed applications, allowing power to be supplied to either the line or load terminals.
Are line and load lugs included with the CQD350 breaker?
Yes, the breaker comes with factory-installed line and load lugs. They are designed for feed-thru connections using copper or aluminum wire.
Can the CQD350 be used on a 240V or 120V system?
Yes, while it has a maximum rating of 480/277VAC, it is fully compatible with 240VAC and 120VAC systems. When used at 240VAC or 120VAC, the interrupting rating increases to 65kA.
What type of trip unit does the CQD350 utilize?
It uses a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) trip functions. The thermal and magnetic trip points are factory set and non-adjustable.
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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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