Intermatic K4236C Stem & Swivel Photocontrol 120-277V

Product Overview

The Intermatic K4236C is a thermal stem-and-swivel photocontrol designed for automatic exterior lighting control. The swivel arm allows the sensor to be positioned after mounting to a compatible outdoor light fixture or electrical box, helping the photocell face the desired ambient-light direction. It is intended for parking lot, landscape, street, pedestrian pathway, and other exterior lighting applications.

Key Features & Design

• Functionality: Uses a mechanical bimetal switch with a cadmium-sulfide photocell to switch lighting based on ambient light. A built-in 30-to-90-second delay helps prevent unwanted OFF switching from brief light exposure such as headlights or lightning. The control is designed with fail-ON operation.
• Installation context: Mounts using a swivel with a 1/2-14 NPSM threaded stem. Washer gasket and locking nut are included, along with 6-inch #18 AWG wire leads for field connection.
• Notable specifications: 120-277 VAC, 50/60 Hz; activation ON at 1.5 fc; activation OFF at 3-15 fc; thermal photocontrol; gray UV-resistant polycarbonate housing; 5-year expected life; 2-year limited warranty.
• Contractor-relevant details: Confirm the connected lamp/ballast type and load before installation. Published compatibility includes fluorescent, HID, and incandescent loads, with separate magnetic-ballast and tungsten ratings.

Performance / Benefits

The adjustable swivel and time-delay function make the K4236C a practical replacement control for outdoor luminaires where sensor orientation matters. Its simple thermal switching design supports dusk-to-dawn operation without programming or network commissioning.