RAB T8-P2S Series LED Sign Tub...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$71.43
$41.76
RAB T8-P2S Series LED Sign Tubes — Ballast Bypass, Single-End Powered, 6500K (7W–120W, Multiple Lengths)

RAB T8-P2S Series LED Sign Tubes - Ballast Bypass Single-End Powered 6500K with Constant Current Driver

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Model: T8-19.5-48P2S-865-DE-BYP

In Stock (leaves warehouse same day if ordered before 3pm ET)

$71.43
$41.76
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RAB T8-P2S Series LED Sign Tubes - Ballast Bypass Single-End Powered 6500K with Constant Current Driver

Professional LED Sign Lighting with Ballast Bypass Technology

The RAB T8-P2S Series LED Sign Tubes deliver professional-grade illumination with ballast bypass single-end powered design and 6500K daylight color temperature. These LED tubes feature constant current driver technology and 120-277V input voltage compatibility for versatile installation requirements. With 50,000-hour rated lamp life, these tubes provide reliable long-term performance for sign lighting applications.

Professional Features & Benefits

  • Ballast Bypass Design: Eliminates ballast dependency for improved efficiency and reduced maintenance requirements
  • Single-End Powered Configuration: Simplifies wiring with power connection at one end for streamlined installation
  • 6500K Daylight Color Temperature: Provides crisp, bright white light ideal for sign visibility and professional appearance
  • Constant Current Driver: Ensures stable LED performance and consistent light output throughout operational life
  • 120-277V Input Voltage: Compatible with standard commercial and residential electrical systems
  • 50,000-Hour Lamp Life: Delivers exceptional longevity reducing replacement frequency and maintenance costs
  • LED Technology: Energy-efficient solid-state lighting with instant-on capability and superior durability

Technical Specifications

  • Department: Electrical
  • Driver_Info: Constant Current
  • Input_Voltage: 120-277V
  • Lamp_Hours: 50000
  • Lamp_Info: LED

Professional Applications

  • Commercial Sign Lighting
  • Retail Store Signage
  • Office Building Directory Signs
  • Restaurant Menu Boards
  • Professional Service Signage
  • Industrial Facility Identification
  • Emergency Exit Sign Illumination

Why Choose RAB Quality?

RAB T8-P2S Series LED Sign Tubes combine proven LED technology with professional-grade construction for dependable sign lighting performance. The 50,000-hour rated life and constant current driver design ensure consistent illumination and reduced maintenance requirements for professional applications.

Manufacturer Resources

Product Specs

Department:
Electrical
Driver Info:
Constant Current
Input Voltage:
120-277V
Lamp Hours:
50000
Lamp_Info:
LED

RAB T8-19.5-48P2S-865-DE-BYP – Frequently Asked Questions

1) Do I have to remove the fluorescent ballast to install RAB T8-P2S LED sign tubes?
Yes. The T8-P2S is a ballast bypass tube, so the existing fluorescent ballast comes out and line voltage is wired straight to the lampholders. It runs on its own constant current driver built into the tube, which is why the ballast has to go. If you leave a shunted or non-shunted ballast in the circuit the tube won't operate correctly, so plan the retrofit as a full rewire of the sign can, not a lamp swap.
2) Which end of a single-end powered LED sign tube gets the hot and neutral?
Single-end powered means both line and neutral land on the two pins at one end of the tube, and the opposite end is only a mechanical support. On the RAB T8-P2S that one-end wiring is the whole point of the design: one lampholder gets both conductors, the other carries no power. Electricians retrofitting a sign can usually reuse one existing lampholder and cap or replace the far one; if the existing holders are shunted, verify them before energizing.
3) Will these RAB sign tubes run on 277V in a commercial building?
Yes. The T8-P2S accepts 120-277V input, so the same tube works on a 120V retail sign circuit or a 277V commercial lighting panel with no change in part number. That covers standard commercial and multi-family panel voltages, which is what lets a property manager stock one tube across mixed buildings.
4) What lengths and wattages do the RAB T8-P2S sign tubes come in?
Fourteen wattages, and each one corresponds to a nominal length in inches read from the model number: 7W at 18 inches, 9W at 24, 12W at 30, 15W at 36, 17.5W at 42, 19.5W at 48, 24W at 60, 26W at 64, 29.5W at 72, 35W at 84, 39.5W at 96, 43W at 108, 46W at 117, and 47.5W at 120 inches. Measure the existing tube in the sign can first, then pick the wattage that matches that length, since the sign cabinet, not the light level, sets which one you order.
5) Can I mix these LED sign tubes with the fluorescent tubes still in the other half of the cabinet?
No, not on the same circuit. Once the ballast is bypassed for the LED tubes, that circuit feeds line voltage directly to the sockets, which will destroy a fluorescent lamp put back in. Re-lamp a whole cabinet at once. Color is a second reason: the T8-P2S is 6500K and older fluorescent sign lamps are often warmer, so a half-and-half cabinet shows the difference from the sidewalk.
6) What color temperature is 865 on a RAB LED sign tube?
The 865 in the model code is the color designation: 6500K, a cold daylight white. That is the standard sign-lighting color, chosen so faces and translucent graphics read bright from the street at night. Every wattage in the T8-P2S run covered here is 6500K, so a partial re-lamp of a cabinet won't leave you with mismatched color across the tubes.
7) How long do RAB T8-P2S sign tubes last before they need replacing?
Rated lamp life is 50,000 hours. For a sign burning dusk to dawn, roughly 12 hours a night, that works out to about 11 years of service. For MRO and property management planning, that is what takes sign re-lamping out of the annual maintenance cycle, and it is the main argument for bypassing the ballast rather than continuing to buy fluorescent lamps and ballasts.
8) Can RAB T8-P2S ballast bypass tubes be used in an emergency or exit sign?
Illuminating exit and identification signage is one of the applications RAB lists for the T8-P2S. Be aware of what the tube does not do on its own: it has no internal battery and no emergency backup, so it runs only while the circuit is live. An exit sign that has to stay lit through a power failure needs its own emergency battery unit or an inverter-fed circuit; the tube alone doesn't satisfy that.
9) Why does a sign tube need a constant current driver?
Constant current driving holds the LED current steady as the tube heats up and as line voltage wanders across the 120-277V range. In a sign cabinet, where tubes sit in a sealed enclosure in full sun or hard cold, that is what keeps light output even along a row of tubes instead of some faces looking dimmer than others. It is also why the tube can't run through an existing fluorescent ballast: the driver is inside the tube and does that job itself.
How fast can I get the RAB T8-19.5-48P2S-865-DE-BYP delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the RAB T8-19.5-48P2S-865-DE-BYP come with a warranty?
Absolutely. The RAB T8-19.5-48P2S-865-DE-BYP is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the RAB T8-19.5-48P2S-865-DE-BYP?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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