WATLOW QPAC 480V 300A SCR POWER CONTROLLER 3 Phase 3 Leg Q33-481-300-AFO
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About this product
The Watlow QPAC series SCR power controller handles 480V and 300A for 3-phase systems, with a 3-leg configuration. This model Q33-481-300-AFO is built for industrial heating and power control applications. Made in the USA, it offers robust solid-state switching for high-current loads, ensuring precise regulation and long service life.
Our take
For heavy-duty industrial power control, this Watlow QPAC is a beast. It handles 480V and 300A per phase with ease. The SCR design provides smooth and reliable switching for resistive loads like heaters. The build quality is excellent, and it's clearly made to last. The price is high, but you're paying for high-current capability. Installation is straightforward but requires proper cabling. The only downside is the bulkiness—it takes up a lot of panel space. Also, for such a high-power unit, cooling is essential; it comes with a heatsink, but forced air isn't included. Overall, a premium choice for demanding applications.
Pros & Cons
Pros
- 300A high current capability
- 480V 3-phase operation
- Robust SCR switching
- Made in USA quality
- Reliable for industrial use
Cons
- Very expensive
- Large and heavy unit
- Requires additional cooling
Specifications
- Brand Watlow
- Series QPAC
- Output Voltage Rating (AC) 480 V
- Nominal Voltage Rating (AC) 480 V
- Nominal Current Rating 300 A
- MPN SCR Q33
Show all 8 specifications
- Country of Origin
- United States
- Nominal Input Voltage Rating (AC)
- 480 V
