Siemens SND69120ANGT Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Quantity
Siemens SND69120ANGT - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Delivering advanced protection for commercial systems, the Siemens SND69120ANGT handles 1200A loads across three poles. It features a Sensitrip solid state electronic trip unit with adjustable LSIG functions, providing long-time, short-time, instantaneous, and ground fault protection. This unit-mount breaker fits Siemens switchboards, S5/SPP power panelboards, and motor control centers. Rated at 50kAIC at 480VAC, it is a legacy ND frame model replaced by the modern 3VA series.Specifications
| Brand | Siemens |
|---|---|
| Part Number | SND69120ANGT |
| Series | SND |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Switchboards, Type S5 Power Panelboards, Type SPP Power Panelboards, Motor Control Centers |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Solid State Trip, Ground Fault Protection, Interchangeable Trip Unit |
Product FAQs
8 answersWhat does the LSIG designation mean on the SND69120ANGT?
LSIG indicates that the solid-state electronic trip unit features adjustable Long-Time, Short-Time, Instantaneous, and Ground Fault functions. This allows panel builders to precisely coordinate the breaker with other protective devices in a distribution system.
Is the Siemens SND69120ANGT suitable for reverse connection?
Yes, this bolt-on molded case circuit breaker is acceptable for reverse connection applications, providing installation flexibility when routing line and load conductors in switchboards and power panels.
Which enclosures and panelboards are compatible with this ND frame breaker?
The SND69120ANGT is engineered for installation in Siemens Switchboards, Type S5 Power Panelboards, Type SPP Power Panelboards, and Motor Control Centers.
Does this breaker require a separate relay system for ground fault protection?
No separate ground fault relay is required. The ground fault protection is integrated directly into the electronic trip unit, which simplifies panel wiring and reduces the overall footprint needed for equipment safety.
Can the electronic trip unit on this breaker be swapped or upgraded?
No, the SND69120ANGT is manufactured with a non-interchangeable solid-state trip unit. While the LSIG trip parameters are fully adjustable, the physical trip module itself cannot be removed or swapped for another type.
Is there a direct Siemens successor for the SND69120ANGT?
Yes, Siemens designates the SND6B120LSIG as a modern successor for this unit. However, replacing a failed breaker with the exact SND69120ANGT allows you to maintain existing Sentron ND frame panelboards without modifying the mounting hardware.
How does the electronic trip unit compare to a traditional thermal-magnetic mechanism?
The solid-state electronic trip unit on this model offers superior accuracy, repeatability, and adjustability. Unlike thermal-magnetic models which rely on heat generation to trip, the electronic sensors provide exact trip curves tailored to complex load requirements.
What physical frame size does this 1200A breaker utilize?
It is built on the standard Siemens ND frame platform. Verifying the frame size is critical when matching mounting dimensions, lug configurations, and panel cutouts for 800A to 1200A circuits in existing switchgear.
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