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Siemens BQD6350 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Siemens
BQD6350
Molded Case Circuit Breaker
Brand
Siemens
SKU
BQD6350
Quantity
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Siemens BQD6350 - 50A 3 Pole Molded Case Circuit Breaker
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Description
Designed to protect commercial power distribution systems, the Siemens BQD6350 supplies 50A of thermal-magnetic defense. It operates efficiently on 600Y/347VAC and 125/250VDC networks, utilizing a trip-free mechanism to prevent the contacts from being held closed during a fault. This bolt-on MCCB mounts firmly into Siemens P1, P2, and P3 panelboards. The standardized BQD frame size allows for straightforward integration into existing facility infrastructure.Specifications
| Brand | Siemens |
|---|---|
| Part Number | BQD6350 |
| Series | BQD6 |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 10kA @ 600Y/347VAC, 14kA @ 125/250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | 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 |
| Approval | CSA |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
7 answersWhich panelboards accept the Siemens BQD6350 breaker?
This bolt-on breaker is designed for installation in Siemens P1, P2, and P3 panelboards.
What is the difference between Siemens BQD and BQD6 circuit breakers?
Standard BQD breakers are UL listed for up to 480Y/277V AC, while the BQD6 series is CSA certified for higher voltage systems up to 600Y/347V AC.
Can I use the BQD6350 to replace a CQD6350 breaker?
No. While they share similar internal components, BQD6 breakers are designed to bolt onto panelboard busbars. CQD6 breakers are designed for DIN rail or surface mounting and feature lugs on both the line and load sides.
Is the BQD6350 breaker HACR rated for HVAC equipment?
Yes, this breaker carries an HACR rating, meaning it is approved for use with heating, air conditioning, and refrigeration systems.
Can the Siemens BQD6350 be reverse fed?
Yes, this breaker supports reverse feed applications, allowing it to be back-fed when required by your specific panel configuration.
Does this breaker support direct current (DC) applications?
Yes, the BQD6350 is rated for DC systems up to 125/250VDC, providing a 14kA interrupting capacity for those applications.
What wire sizes and materials are compatible with the BQD6350 lug terminals?
The factory-installed load lugs accept both copper (Cu) and aluminum (Al) conductors. They accommodate 8 to 1 AWG copper wire or 6 to 1/0 AWG aluminum wire.
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