Siemens ND63B120 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Siemens
ND63B120
Molded Case Circuit Breaker
Brand
Siemens
SKU
ND63B120
Quantity
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Siemens ND63B120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens ND63B120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | ND63B120 |
| Series | ND6 |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P5 Panelboards, SB1, SB2, SB3 Switchboards |
| Wire Gauge | (4) 250-500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Line and Load Lugs (TA4N8500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Quantity
Siemens ND63B120 - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | ND63B120-R |
| Series | ND6 |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P5 Panelboards, SB1, SB2, SB3 Switchboards |
| Wire Gauge | (4) 250-500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Line and Load Lugs (TA4N8500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
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Description
Operating at 1200 amps, the Siemens ND63B120 is a 3-pole molded case circuit breaker from the Sentron series, built for demanding commercial power needs. This unit mount breaker is compatible with Siemens P5 panelboards and SB1, SB2, and SB3 switchboards. While it serves as a reliable replacement, it is succeeded by the NXD63B120. The breaker features an interchangeable thermal-magnetic trip unit, delivering a robust 65kAIC interrupting rating at 240VAC.Specifications
| Brand | Siemens |
|---|---|
| Part Number | ND63B120 |
| Series | ND6 |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P5 Panelboards, SB1, SB2, SB3 Switchboards |
| Wire Gauge | (4) 250-500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Line and Load Lugs (TA4N8500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhat enclosures are compatible with the Siemens ND63B120 breaker?
This ND frame circuit breaker is designed for installation in Siemens P5 panelboards, as well as SB1, SB2, and SB3 switchboards.
Are terminal lugs included with this circuit breaker?
No, terminal lugs are not included. You will need to install a compatible ND frame lug kit, such as the Siemens 3TA4N8500 or 3TA4P8500, which accepts four 250 to 500 kcmil copper or aluminum cables per pole.
How do you adjust the trip settings on this breaker?
This breaker features a thermal-magnetic trip unit with a fixed thermal rating for long-time overcurrents and an adjustable magnetic trip for instantaneous short circuits. The magnetic trip levels can be adjusted using the dials on the face of the trip unit.
Can this breaker replace an older ITE ND63B120?
Yes, Siemens acquired ITE and continued to manufacture the Sentron ND frame series. A modern Siemens ND63B120 is an exact, direct replacement for legacy ITE models bearing the same catalog number.
Is the trip unit on the ND63B120 interchangeable?
Yes, standard Siemens ND6 breakers utilize an interchangeable trip design. This allows you to replace or upgrade the thermal-magnetic trip block without having to unmount the entire breaker frame from the switchboard.
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