Description

6 x T12HO or T8HO Replacement Sign Ballast

8–48 ft Coverage

Instant Start

Parallel Wiring

Keystone Technologies KTSB-E-0848-46-UV is an electronic sign ballast designed to operate six high-output fluorescent lamps in commercial sign applications. This ballast supports T12HO lamps up to 8 feet and T8HO lamps up to 6 feet in various combined footage configurations.Featuring instant start operation and parallel lamp connection, this ballast delivers reliable performance for channel letter and cabinet sign installations. The universal 120–277V input allows flexible integration into existing signage systems.

Product Specifications

• Brand: Keystone Technologies
• Model: KTSB-E-0848-46-UV
• Ballast Type: Electronic Sign Ballast
• Number of Lamps: 6
• Lamp Types Supported:
  • T12HO (F96T12/HO) – 8 to 48 ft total lamp footage
  • T8HO (F72T8/HO) – 16 to 36 ft total lamp footage
• Input Voltage: 120–277V AC ±10%
• Input Frequency: 50/60Hz
• Starting Method: Instant Start
• Lamp Connection: Parallel
• Sound Rating: A
• Minimum Starting Temperature: -20°F (-29°C)
• Maximum Case Temperature: 194°F (90°C)
• Power Factor: >0.97
• Max THD: 10%
• Certifications: UL, cUL 935 Listed

Electrical Performance

• Input Watts: 410W (120V T12HO) / 405W (277V T12HO)
• Input Watts: 370W (120V T8HO) / 365W (277V T8HO)
• Input Current: 3.50A (120V T12HO) / 1.50A (277V T12HO)
• Input Current: 3.20A (120V T8HO) / 1.36A (277V T8HO)
• Crest Factor: <1.7

Physical Dimensions

• Length: 14.45 inches
• Width: 3.23 inches
• Height: 2.20 inches
• Mounting: 13.75 inches
• Lead Length:
  • Black, White: 24 inches
  • Blue, Red, Yellow, Yellow/Black: 144 inches

Applications

• Channel letter signs
• Cabinet signage
• Commercial building signs
• High-output fluorescent sign retrofits