Siemens SND69120ANT Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Quantity
Siemens SND69120ANT - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for industrial power distribution, the Siemens SND69120ANT is a 1200A, 3-pole electronic trip molded case circuit breaker built on the Sentron ND Frame. It installs into Siemens S4, S5, and SPP power panelboards or switchboards. This legacy unit is officially replaced by the SND6B120LSI model. Rated 35 kAIC at 480V, it features a Sensitrip III trip unit with adjustable long-time, short-time, and instantaneous (LSI) functions for precise coordination.Specifications
| Brand | Siemens |
|---|---|
| Part Number | SND69120ANT |
| Series | SND6 |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards (Type S4, S5, SPP), Switchboards |
| Wire Gauge | 4x 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 | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
7 answersWhat panelboards are compatible with the SND69120ANT breaker?
This ND frame breaker is designed for installation in Siemens Sentron Type S4, S5, and SPP power panelboards, as well as compatible Siemens switchboards.
What is the direct replacement for the legacy SND69120ANT?
The SND69120ANT is a legacy Sentron series breaker that has been officially replaced by the newer SND6B120LSI model. Both share the same physical footprint and LSI trip functions.
What wire sizes are accepted by the standard lugs on this breaker?
The standard lugs accommodate four copper or aluminum conductors per phase, ranging from 250 kcmil to 500 kcmil.
What does the LSI designation mean on the SND69120ANT trip unit?
LSI indicates that the electronic Sensitrip III trip unit features adjustable Long-Time, Short-Time, and Instantaneous pickup settings. This allows for precise overcurrent coordination in industrial power distribution systems.
Does this breaker require a specific mounting configuration?
Yes, the SND69120ANT is a unit-mount, bolt-on circuit breaker designed for secure, hardwired connections in heavy-duty industrial enclosures and switchboards.
Can I interchange the trip unit on the SND69120ANT?
No, this specific ND frame breaker comes equipped with a factory-installed, non-interchangeable solid-state electronic trip unit.
What safety precautions are required when adjusting the LSI trip settings?
Only qualified electrical personnel should adjust the Long-Time, Short-Time, or Instantaneous settings. Adjustments must be made according to a properly engineered coordination study to ensure the breaker clears faults safely without causing nuisance tripping.
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