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Siemens LXD63B450H Molded Case Circuit Breaker
- 450A
- 3 Pole
- Unit Mount
Siemens
LXD63B450H
Molded Case Circuit Breaker
Brand
Siemens
SKU
LXD63B450H
Quantity
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Siemens LXD63B450H - 450A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens LXD63B450H - 450A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | LXD63B450H |
| Series | LXD6 |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers |
| 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, Lug Kit |
|---|---|
| Accessories | Lugs Not Included (Requires TA2J6500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | 100% Rated, Non-Interchangeable Trip, Reverse Feed, HACR Rated |
Quantity
Siemens LXD63B450H - 450A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | LXD6 |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers |
| 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, Lug Kit |
|---|---|
| Accessories | Lugs Not Included (Requires TA2J6500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | 100% Rated, Non-Interchangeable Trip, Reverse Feed, HACR Rated |
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Description
The Siemens LXD63B450H is a 100% rated, 3-pole molded case circuit breaker designed to carry its full 450A continuous current rating without derating. It mounts into Siemens Sentron panelboards, switchboards, and motor control centers for reliable industrial power distribution. This LD frame breaker features a non-interchangeable thermal-magnetic trip unit with adjustable magnetic protection. Rated for 35 kAIC at 480VAC, it is reverse feed capable and HACR certified for HVAC applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LXD63B450H |
| Series | LXD6 |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers |
| 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, Lug Kit |
|---|---|
| Accessories | Lugs Not Included (Requires TA2J6500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | 100% Rated, Non-Interchangeable Trip, Reverse Feed, HACR Rated |
Product FAQs
6 answersWhat does the H suffix in the LXD63B450H catalog number indicate?
The H suffix designates that this circuit breaker is 100% rated. This allows it to carry its full 450A continuous current rating without the standard 80% derating requirement, provided it is installed in a properly rated enclosure with appropriately sized conductors.
Are lugs included with the LXD63B450H breaker?
No, lugs are not factory-installed on this model. You must purchase compatible lug kits separately, such as the TA2J6500 for aluminum or copper wire, or the TC2J6500 for copper wire only.
What wire size range do the compatible TA2J6500 and TC2J6500 lugs accept?
Both the TA2J6500 and TC2J6500 lug kits accept wire sizes ranging from 3/0 AWG to 500 kcmil.
Is the LXD63B450H suitable for reverse feed applications?
Yes, this breaker is UL listed for reverse feeding, meaning power can be supplied to either the line or load side terminals.
Can this breaker be used for heating and cooling equipment?
Yes, the LXD63B450H is HACR rated, making it certified for use with heating, air conditioning, and refrigeration motor loads.
Can the trip unit on the LXD63B450H be replaced or upgraded?
No, this breaker features a non-interchangeable thermal-magnetic trip unit. The thermal long-time protection is fixed at 450A, while the instantaneous magnetic trip setting is adjustable.
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