GE Lighting 37339 GE454PUNVHB-E/M MultiVolt UltraStart T5 Ballast case of 10

T5 UltraStart ballast case of 10

This case contains ten GE 37339 GE454PUNVHB-E/M electronic ballasts designed for T5 fluorescent lamps. Each unit operates on a multi-voltage input from 108V to 305V, simplifying inventory for commercial and industrial lighting projects. The UltraStart platform supports frequently switched applications such as occupancy-sensor circuits. Parallel-series lamp operation keeps the remaining lamps illuminated when one reaches end of life.

Wiring and mounting considerations

The ballast is a standard core-and-coil replacement that fits existing T5 fixture channels and mounts with the same screw pattern. Parallel-series wiring means only the failed lamp shuts down, so troubleshooting is limited to a single socket rather than the whole circuit. Auto-restart restores operation after brief power interruptions without manual reset. Ensure the fixture grounding and lamp holder contacts are clean to avoid striation issues.

Verify voltage, lamp count and dimming needs

Confirm the supply voltage at the installation site falls within the 108V to 305V range before ordering. Each ballast drives four T5 lamps and provides step dimming to approximately 50 percent input power by shutting down two lamps, so the lighting design must accommodate that fixed reduction. The case rating is 90C with a UL-approved 55C ambient limit, and the minimum starting temperature is -20F, so check that the operating environment stays within those thermal boundaries.