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Siemens LMD63B800 Molded Case Circuit Breaker
- 800A
- 3 Pole
- Unit Mount
Siemens
LMD63B800
Molded Case Circuit Breaker
Brand
Siemens
SKU
LMD63B800
Quantity
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Siemens LMD63B800 - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens LMD63B800 - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | LMD63B800 |
| Series | LMD6 |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Frame Type | LMD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P4, P5), Switchboards (SB1, SB2, SB3) |
| Wire Gauge | (3) 1/0 AWG - 500 kcmil (Al/Cu) |
| 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, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Quantity
Siemens LMD63B800 - 800A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | LMD63B800-R |
| Series | LMD6 |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Frame Type | LMD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P4, P5), Switchboards (SB1, SB2, SB3) |
| Wire Gauge | (3) 1/0 AWG - 500 kcmil (Al/Cu) |
| 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, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Similar Items
600A 3 Pole Molded Case Circuit Breaker
500A 3 Pole Molded Case Circuit Breaker
800A 3 Pole Molded Case Circuit Breaker
Description
Operating within the Sentron LMD frame family, this 800A molded case circuit breaker supplies thermal-magnetic protection for heavy commercial and industrial facilities. This unit mounts into Siemens SB1, SB2, and SB3 switchboards, as well as P4 and P5 panelboards. When upgrading infrastructure, it is replaced by the 3VA5580-7EC36-0AA0 using an approved retrofit kit. Equipped with an interchangeable trip unit, it allows for adjustable magnetic settings to meet specific load requirements.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LMD63B800 |
| Series | LMD6 |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Frame Type | LMD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P4, P5), Switchboards (SB1, SB2, SB3) |
| Wire Gauge | (3) 1/0 AWG - 500 kcmil (Al/Cu) |
| 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, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhat panelboards and switchboards accept the LMD63B800?
This 800A Sentron frame breaker is designed for use in Siemens P4 and P5 panelboards, along with SB1, SB2, and SB3 switchboards. Installation requires a dedicated strap kit, such as the LMD65K mounting hardware.
Are line and load lugs included with this unit mount breaker?
Yes, the LMD63B800 is supplied as a complete feed-thru breaker with factory-installed line and load lugs. The standard TA3K500 lug kit accepts three 1/0 AWG to 500 kcmil aluminum or copper conductors per phase.
What is the adjustment range for the magnetic trip unit?
While the thermal long-time trip is fixed at 800A, the instantaneous magnetic trip is adjustable. The standard adjustment range for the LMD63B800 spans from 3200A at the low setting up to 6400A at the high setting to help coordinate with downstream devices.
Can the 3-pole LMD63B800 be used on a 500VDC system?
Yes, this breaker carries a 25kAIC rating at 500VDC. For 500VDC applications, the manufacturer requires all three poles to be wired in series to properly divide the DC voltage and ensure safe arc extinguishing.
Is the LMD63B800 a direct replacement for legacy ITE LMD frames?
Yes, this Sentron LMD6 series breaker matches the physical footprint and mounting pattern of older Siemens and ITE LMD-frame 800A breakers, making it a direct drop-in replacement.
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