J3MAG Vacuum Circuit Breaker
The JST Power Equipment J3MAG is a 5 to 15 kV magnetically actuated vacuum circuit breaker for distribution switchgear and utility feeder protection, sold and supported in Texas and Oklahoma and on data center projects nationwide by Ryan Sales.
- 5 - 15 kV class
- magnetic actuation
- independent pole actuators
- single-phase or three-phase operation
- vacuum interruption
Overview
The J3MAG is a magnetic-actuated vacuum breaker offering single-phase operation through independent pole actuators, purpose-built for JST's J100CLAD air-insulated switchgear. With far fewer moving parts than spring-charged mechanisms, it eliminates lubrication requirements, extends service life, and lowers operating cost, while helping utilities improve SAIFI/SAIDI reliability scores. Racking and control-module documentation and training videos are provided.
Specifications
| Voltage class | 5–15 kV |
|---|---|
| Interrupting time | 3 cycles |
| Operating mechanism | Magnetic actuation, independent pole actuators; no lubrication |
| Configuration | Single-phase or three-phase operation |
| Insulation | Vacuum interruption |
Ratings from manufacturer data. Confirm your configuration with a rep.
Applications
- Distribution switchgear
- Utility feeder protection
- Industrial plant distribution
Spec sheets & documents
Frequently asked questions
Who sells the JST Power Equipment J3MAG Vacuum Circuit Breaker in Texas?
Ryan Sales, a manufacturers' representative based in Magnolia, Texas, sells the JST Power Equipment J3MAG Vacuum Circuit Breaker and supports customers across Texas and Oklahoma and on data center projects nationwide through regional reps. Call (281) 363-1106 or request a quote on this page.
How does the J3MAG magnetic actuator differ from a spring-charged breaker mechanism?
The J3MAG's magnetic actuation has far fewer moving parts than spring-charged mechanisms, so it needs no lubrication, has a longer service life and lowers operating cost. Independent pole actuators allow single-phase or three-phase operation, and the breaker provides 3-cycle vacuum interruption.
What switchgear is the JST J3MAG vacuum circuit breaker designed for?
The J3MAG is purpose-built for JST's J100CLAD air-insulated metal-clad switchgear in the 5 to 15 kV class. It serves distribution switchgear, utility feeder protection and industrial plant distribution, and JST provides racking and control-module documentation plus training videos.
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