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Siemens MXD63B800 Molded Case Circuit Breaker
- 800A
- 3 Pole
- Unit Mount
Siemens
MXD63B800
Molded Case Circuit Breaker
Brand
Siemens
SKU
MXD63B800
Quantity
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Siemens MXD63B800 - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens MXD63B800 - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | MXD63B800 |
| Series | MXD6 |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 250VDC |
| Frame Type | HMD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type S4, S5), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| Wire Gauge | (3) 1/0 AWG - 500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 1/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lugs |
|---|---|
| Accessories | Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Quantity
Siemens MXD63B800 - 800A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | MXD63B800-R |
| Series | MXD6 |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 250VDC |
| Frame Type | HMD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type S4, S5), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| Wire Gauge | (3) 1/0 AWG - 500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 1/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lugs |
|---|---|
| Accessories | Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Similar Items
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600A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for demanding industrial environments, the Siemens MXD63B800 delivers robust overcurrent protection. This 3-pole, 800A molded case circuit breaker utilizes a thermal-magnetic trip unit with adjustable magnetic settings from 4000A to 8000A. It installs into Siemens Sentron Type S4 and S5 panelboards, plus SB-series switchboards and motor control centers. The unit-mount design ensures secure integration. Rated for 65kAIC at 240VAC, this MD frame breaker handles high fault currents.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MXD63B800 |
| Series | MXD6 |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 250VDC |
| Frame Type | HMD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type S4, S5), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| Wire Gauge | (3) 1/0 AWG - 500 kcmil |
| Max Wire | 500 kcmil |
| Min Wire | 1/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lugs |
|---|---|
| Accessories | Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
8 answersAre terminal lugs included with the MXD63B800 breaker?
No, this breaker is supplied from the factory without lugs. Appropriate line and load lug kits must be purchased and installed separately based on your wire size and conductor material.
What is the difference between Siemens MXD6 and MD6 circuit breakers?
Both belong to the Sentron MD frame family. The MXD6 series features a factory-installed, non-interchangeable thermal-magnetic trip unit, while the MD6 series is designed to accept field-interchangeable trip units.
Which panelboards and switchboards are compatible with this breaker?
This unit-mount breaker is designed for direct installation in Siemens Sentron Type S4 and S5 panelboards, as well as SB1, SB2, and SB3 series switchboards.
Are the trip settings adjustable on the MXD63B800?
Yes, while the thermal (long-time) overcurrent protection is fixed at 800A, the magnetic (instantaneous) short-circuit pickup is adjustable between 4000A and 8000A.
Can I install internal accessories in this Sentron MD frame breaker?
Yes, the MXD63B800 supports standard field-installable internal accessories such as shunt trips, undervoltage releases, and auxiliary switches, which mount into the accessory pockets under the front cover.
Can the MXD63B800 be used in reverse-feed applications?
Yes, Siemens MXD6 molded case circuit breakers are UL Listed and CSA Certified for reverse connection and reverse-feed applications.
Does this catalog number represent a 100-percent rated circuit breaker?
No, the standard MXD63B800 is rated for 80-percent continuous load. For applications requiring a 100-percent continuous rating, a variant with an "H" suffix (such as the MXD63B800H) is required.
Is the MXD63B800 HACR rated?
Yes, this Siemens Sentron MD frame breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment branch circuits.
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