Keystone KTEB-275-UV-TP-PIC-SL 2-lamp F48T12 Ballast 120-277V

Product Description

The KEYSTONE KTEB-275-UV-TP-PIC-SL is an electronic fluorescent ballast designed to drive two F48T12 lamps with instant-start operation. Rated at 64 watts input power, it accepts a wide input voltage range of 120 to 277 VAC at 50/60 Hz, making it suitable for both standard and universal-voltage commercial lighting installations. With a power factor of 0.99 and a maximum total harmonic distortion (THD) of 12 percent, this ballast meets the efficiency and power quality expectations required in commercial and industrial retrofit and new-construction projects. Licensed electricians and lighting contractors typically handle installation in fluorescent fixture assemblies.

This ballast is intended for use in commercial, industrial, and institutional fluorescent lighting systems using F48T12 lamps. Its wide voltage tolerance — 120 to 277 VAC — simplifies specification across facilities where panel voltages vary. The parallel wiring configuration means that if one lamp fails, the remaining lamp continues to operate, minimizing disruption in service areas, warehouses, retail spaces, and office environments. The minimum starting temperature of -18 degrees C extends usable range to unheated spaces such as parking structures, storage facilities, and covered outdoor areas.

Key Features

• Instant-start operation for immediate lamp ignition without warm-up delay
• Wide input voltage range of 120 to 277 VAC eliminates the need for multiple ballast SKUs across voltage environments
• Parallel wiring configuration maintains lamp operation if one lamp in the circuit fails
• Power factor of 0.99 reduces reactive power draw on the electrical system
• Maximum THD of 12 percent supports power quality requirements in sensitive facility environments
• Minimum starting temperature of -18 degrees C rated for cold-environment applications

Compatibility

Designed as an OEM-style replacement or new-install electronic ballast for two-lamp F48T12 fluorescent fixture assemblies operating on 120 to 277 VAC systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NFPA 70 (NEC) and applicable local electrical codes. De-energize the circuit at the breaker and verify absence of voltage before wiring the ballast. Follow the ballast wiring diagram for correct lamp lead and line connections, and ensure the fixture housing provides adequate clearance and ventilation around the ballast body. Do not operate the ballast with lamp types or quantities other than those specified.

Technical Specifications

• Starting Type: Instant Start
• Lamp Type: F48T12
• Number of Lamps: 2
• Lamp Wattage: 75 W
• Input Power: 64 W
• Input Voltage: 120 to 277 VAC
• Input Current: 0.6 A at 120 VAC, 0.26 A at 277 VAC
• Frequency Rating: 50/60 Hz
• Power Factor: 0.99
• Ballast Factor: 0.92
• Maximum THD: 12 percent
• Wiring: Parallel
• Minimum Starting Temperature: -18 degrees C
• Package Dimensions: 12.0 inches L x 10.0 inches W x 4.0 inches H
• Country of Origin: China

Standard Information

• Brand: KEYSTONE
• Manufacturer Part Number: KTEB-275-UV-TP-PIC-SL