| Attribute | Value |
|---|---|
| Brand | GE – General Electric |
| Division | GE Electrical Distribution & Control |
| Series | Spectra RMS |
| Type | Molded Case Circuit Breaker Accessories |
| Function | Shunt Trip Device |
| Catalog Number | SAST1 |
| Rating Volts (AC) | 120VAC 50/60Hz 500mA |
| Rating Volts (DC) | 125VDC 500mA |
| Code | J020@1 / J2020@1 |
| Part Number | 21184A |
| Additional Code | AD002825 |
| Description | Shunt Trip and Undervoltage Release |
| Trip Type | Trip, Shunt; 120VAC/125VDC, Incl Mtg |
| UPC | 7 83164 21184 9 |
| Internal Codes | LIZ21 921568Q, Wave: F601036 |
| Country of Origin | Made in USA |
| Weight | 100 GM |
| Reference Number | 66105 |
What is a Shunt Trip?
Before we get into the SAST1 model, let’s define what a shunt trip is. A shunt trip is an electromechanical relay that allows a circuit breaker to be remotely tripped. It is an add-on accessory to a breaker that is actuated by an external voltage signal. This safety feature is usually built into emergency stop buttons, fire suppression systems, or control relays to instantaneously cut off power when necessary.
Overview of General Electric SAST1 Shunt Trip
The General Electric (GE) SAST1 shunt trip unit is built specifically to function with GE circuit breakers. Renowned for its high level of performance, reliability, and adherence to worldwide electrical safety regulations, the SAST1 finds common application in mission-critical electrical panels.
Key Specifications:
Brand: General Electric (GE)
Model: SAST1
Function: Remote tripping accessory for circuit breakers
Compatibility: Made for integration into GE circuit breaker systems
Control Voltage: Dependent upon configuration (usually 24V, 110V, or 220V)
Trip Mechanism: Magnetic solenoid operation
Mounting: Screw mounting into breaker housing or side compartment
How Does the GE SAST1 Shunt Trip Work?
The SAST1 shunt trip operates when it is presented with an outside electrical signal — most often provided by a control panel, alarm system, or emergency stop — which energizes the trip coil. This procedure automatically trips the circuit breaker to remove the electrical load, hence preventing damage, fire, or additional fault proliferation.
This places it as a crucial instrument of automated shutdown programs and guarantees protection during occurrences such as:
- Short circuits
- Overloads
- Emergency evacuations
- Fire alarm signals
Uses of the GE SAST1 Shunt Trip
Owing to its dependability, GE SAST1 shunt trip has various uses across different fields:
1. Commercial Buildings
In commercial establishments such as malls, hospitals, and office buildings, shunt trips are wired to security systems or fire alarms for immediate disconnection of power in case of an emergency.
2. Industrial Facilities
In processing and manufacturing plants, the SAST1 is utilized with automated control systems to provide safe machinery and equipment shutdown in event of a failure.
3. Marine & Offshore
Marine electrical systems demand rapid fault isolation; the SAST1 is employed in marine switchboards and control panels for rapid circuit isolation.
4. Renewable Energy
Utilized in solar and wind power installations, where remote tripping is necessary for panel protection or servicing.
Advantages of Utilizing the GE SAST1
✔ Improved Safety: Facilitates quick remote tripping, enhancing operational safety.
✔ Simplified Integration: Integrates easily into existing GE breakers without requiring system redesign.
✔ Reliable Functionality: Constructed to achieve high standards of industry and safety requirements.
✔ Flexible Voltage Range: Manufactured in several control voltages to provide system flexibility.
✔ Reduced Maintenance: With minimal installation required, it does not demand a lot of maintenance or service.
