Siemens CND63B120 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Quantity
Siemens CND63B120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens CND63B120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | CND63B120 |
| Series | CND6 |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 65kA @ 600VAC, 50kA @ 500VDC |
| Frame Type | CND |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (S4, S5, P4, P5), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip |
Quantity
Siemens CND63B120 - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | CND6 |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 65kA @ 600VAC, 50kA @ 500VDC |
| Frame Type | CND |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (S4, S5, P4, P5), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip |
Description
Engineered for heavy-duty commercial use, the CND63B120 is a 1200A thermal-magnetic MCCB from the Sentron ND Frame family. It provides fixed thermal and adjustable magnetic trip settings for LI fault protection. Designed for unit-mount installations, this breaker fits into Siemens S4, S5, P4, and P5 panelboards, plus SB-series switchboards. It requires separate lug kits for up to four 250-500 kcmil cables per phase. With a 100 kAIC rating at 480V, this fuseless breaker is HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CND63B120 |
| Series | CND6 |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 65kA @ 600VAC, 50kA @ 500VDC |
| Frame Type | CND |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (S4, S5, P4, P5), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip |
Product FAQs
5 answersWhich Siemens panelboards and switchboards are compatible with the CND63B120?
This 1200A breaker is designed for installation in Siemens Sentron S4, S5, P4, and P5 panelboards, as well as SB1, SB2, and SB3 switchboards and motor control centers.
What wire sizes and materials do the standard lugs on this breaker accept?
The included lugs accept four 250 to 500 kcmil copper or aluminum conductors per phase.
How does the adjustable magnetic trip function work on the CND63B120?
This breaker features a fixed thermal element for standard overload protection and an adjustable magnetic element. The adjustable magnetic trip allows electricians to fine-tune the instantaneous short-circuit response to match specific load requirements and coordinate with other protective devices.
Can the CND63B120 replace older I-T-E or Siemens ND frame breakers?
Yes, this Sentron series CND frame breaker is physically interchangeable with legacy I-T-E and Siemens ND6 or CND6 frame breakers of the same amperage. It fits the same panel space and uses identical mounting dimensions.
What type of protection does the thermal magnetic trip unit provide?
The thermal magnetic mechanism provides dual protection: the thermal element responds to heat generated by prolonged overloads, while the magnetic element reacts almost instantly to high fault currents to clear short circuits safely.
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