
50638 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $29.99 | Condition is New – Open box, NEW B+L Technologies NU6-2128-PSX - Up to 28W - 277V - Electronic Ballast, FREE SHIPPING | 99.9% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $91.64 | Top Pick! Condition is New, B&L Technologies 50638 - NU6-2128-PSX 277V Compact Fluorescent Ballast, FREE SHIPPING | 99.8% |

The 50638 NU6-2128-PSX Up Light Ballast is a high-performance lighting solution designed for use with Philips Master Color CDM-T lamps. This ballast is ideal for use in up-lighting applications and delivers a powerful 28 watts of energy to the lamp, making it capable of producing a bright and vibrant light output.
The 277 volts ballast is engineered to meet the stringent requirements of commercial and industrial lighting applications, ensuring reliable and consistent performance. It is designed with a sophisticated electronic control system that provides precise voltage regulation and maintains optimal lamp performance over time.
This ballast features a compact and sleek design, making it easy to install and integrate into various lighting systems. It is also constructed from high-quality materials that ensure long-lasting durability and resistance to harsh operating conditions.
The 50638 NU6-2128-PSX Up Light Ballast is compatible with Philips Master Color CDM-T lamps, which are known for their superior color rendering capabilities and excellent color consistency. This ballast is an ideal choice for applications where high-quality light output is essential, such as retail stores, museums, galleries, and other commercial or institutional settings.
The ballast is also designed with energy efficiency in mind, ensuring that it helps to minimize energy consumption and reduce operating costs over time. It is also RoHS compliant, meaning that it is free of certain hazardous materials, making it an environmentally responsible choice for your lighting needs.
In summary, the 50638 NU6-2128-PSX Up Light Ballast is a powerful and reliable lighting solution that delivers high-quality light output, making it an excellent choice for a wide range of commercial and industrial up-lighting applications. Its compact design, long-lasting durability, and energy efficiency make it a cost-effective and sustainable lighting solution that is sure to meet the demands of even the most demanding lighting applications.
Pros and Cons of Buying 50638 Nu6-2128-Psx Up 28W 277V Ballast
The 50638 Nu6-2128-Psx Up 28W 277V ballast is a popular choice for high-intensity horticultural lighting systems. Here are some pros and cons to help you make an informed decision about purchasing this ballast.
Pros:1. High Wattage Capacity: This ballast can handle up to 28 watts of power, making it ideal for large-scale horticultural operations.
2. Universal Compatibility: It is compatible with most MH/HPS lamps, making it a versatile option for growers.
3. Durable Design: The ballast has a sturdy, die-cast aluminum housing that can withstand the rigors of continuous use.
4. Energy Efficient: This ballast is designed to minimize energy loss, ensuring that the majority of the electrical energy is converted into usable light.
5. Easy to Install: It has a simple wiring configuration and can be easily installed in most grow rooms or greenhouses.
Cons:1. Cost: The 50638 Nu6-2128-Psx Up 28W 277V ballast is a more expensive option compared to some lower-wattage ballasts.
2. Size: This ballast is larger and heavier than some other options, which could be a consideration for growers with limited space.
3. Noise Level: The fan inside the ballast can be quite noisy, which could be a concern for growers who prioritize quiet operation.
4. Maintenance: Like all electronic equipment, this ballast requires regular maintenance to ensure optimal performance and longevity.
Conclusion:The 50638 Nu6-2128-Psx Up 28W 277V ballast is a high-performance option for growers who require a large-scale horticultural lighting system. Its universal compatibility, durability, and energy efficiency make it a popular choice. However, its cost, size, noise level, and maintenance requirements are important considerations. Ultimately, the decision to purchase this ballast depends on the specific needs and budget of the grower.
Recommendation:If you are in the market for a high-wattage, versatile, and energy-efficient ballast for your horticultural lighting system, the 50638 Nu6-2128-Psx Up 28W 277V ballast is a solid choice. However, if cost or noise level is a major concern, you may want to consider a lower-wattage or quieter option. It's always a good idea to compare different ballasts and consult with a lighting specialist to determine the best solution for your growing operation.
Details:
New old stock / no box, b l technologies, p/n: NU6-2128-PSX, -, up to 28w - 277v, twin 4-pins, quad triple 2d t2 t5 t8 t12, end of lamp life protection, instant start class type 1 outdoor, electronic ballast box technologies NU6-2128-PSX 277v 4-pins t12 protection outdoor.
specifications faclighting:
- brand: B-l Technologies
- mpn: 50638
- part type: Ballast
- upc: 849818827030
general faclighting:
- category: Business & Industrial > Maintenance Safety > Facility > Lights Lighting
returns faclighting:
- paid by: buyer
- method: money back
- policy: returns accepted
- time: 14 days
seller faclighting:
- # reviews: 2590
- city: ozone park, new york
- rating: 99.6%
shipping faclighting:
- type: fixed
- service: usps ground advantage
- transit: 5-11 days
- carrier: usps
- class: standard
offer faclighting:
- availability: in stock
- sold #: 8
- prices: $29.99–$91.64
- item condition:
- New – Open box
- New
- started: january 18, 2026
- options: ship-to-home
- in stock #: 2
- best offers: true
payments faclighting:
- wallet: apple-pay
- credit card: mastercard
- other
- money order
Grouped With:
- NU6-1128-PSS: BALLAST, B L Technologies
- NU6-1128-PCX: BALLAST, Bplusl Technologies
- NU6-1128-PSX: LAMP BALLAST, B L Technologies
- NU6-2128-PSX: WALL BALLAST CONNECTOR PLATE, B L Technologies

