Siemens SCND6A120LSI Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
Quantity
Siemens SCND6A120LSI - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the Sentron family, this 1200A ND-frame molded case circuit breaker delivers robust power distribution for industrial facilities. The microprocessor-based solid-state trip unit provides highly configurable long-time, short-time, and instantaneous protection. It installs into Siemens Sentron panelboards and switchboards. This legacy component is eventually replaced by the 3VA series. Rated for 65 kAIC at 480VAC, the current-limiting design ensures superior fault interruption.Specifications
| Brand | Siemens |
|---|---|
| Part Number | SCND6A120LSI |
| Series | SCND |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC |
| Frame Type | SND |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 250 - 500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs Not Included |
| Standards | UL 489, NEMA AB 1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip, Reverse Feed |
Product FAQs
5 answersWhat does the LSI designation mean for this trip unit?
LSI indicates a solid state electronic trip unit with adjustable settings for Long-Time (overload), Short-Time (short circuit delay), and Instantaneous (immediate short circuit) protection. This allows for precise selective coordination in complex electrical systems.
Is the SCND6A120LSI a current-limiting circuit breaker?
Yes, the C in the SCND prefix designates this as a fuseless current-limiting breaker. It is designed to interrupt high fault currents quickly, reducing let-through energy to protect downstream equipment.
Does the SCND6A120LSI provide ground fault protection?
No, this breaker is equipped with an LSI trip unit. If your application requires equipment ground fault protection, you will need a breaker with an LSIG trip unit.
Can this breaker replace older Siemens ND-frame models?
Yes, the SCND6A120LSI shares the standard footprint of the Sentron ND frame family. It can directly replace older ND, HND, and CND frame breakers in existing Siemens gear without modifying the bus structure.
Can I install larger conductors than the standard lugs allow?
Yes, the factory lugs can be swapped for alternate Siemens ND-frame lug kits. For example, installing the 3TA2N8750 lug kit allows the breaker to accept 500 to 750 kcmil copper or aluminum conductors.
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