Tork 5403A Photocontrol Turn-Lock 105-130V AC

Application & User

The Tork 5403A is a turn-lock photocontrol designed for outdoor lighting circuits operating between 105 and 130 volts AC. It suits electricians and facility managers who need automatic dusk-to-dawn switching for area lights, signage or pathway illumination. The raintight polypropylene and acrylic enclosure withstands temperatures from -40 degrees to 158 degrees Fahrenheit. Buyers who require dimming control, motion activation or wireless scheduling cannot use this device.

Installation Context

The unit mounts with a standard turn-lock base, simplifying replacement on compatible fixtures without rewiring. Its three-pole single-throw contact form handles up to 600 watts, 25.0 amps incandescent or 40.0 amps ballast load, freeing the installer from adding an external contactor for typical HID or LED drivers. The beige-gray housing measures 8 15/16 inches long, 5 1/4 inches wide and 4 5/8 inches deep. Ensure the mounting location provides clearance for the enclosure depth and that the supply voltage stays within the rated range.

Sustained Operation

The sensor activates at 1.5 foot-candles and deactivates at 2.25 foot-candles, providing a consistent hysteresis that prevents rapid cycling during twilight transitions. California Title 24 compliance and UL listing confirm the control meets regulatory requirements for continuous outdoor service. The wide temperature rating ensures reliable switching through seasonal extremes without thermal nuisance trips. No user-adjustable sensitivity or time-delay settings are provided, so the fixed thresholds dictate long-term behaviour.