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Gray rectangular photocontrol unit with raintight polycarbonate housing

Intermatic

Intermatic K4321C Photocontrol 1800W Gray

SKU CH-CJHB-ARZVZ

Automatically switches lighting on at dusk and off at dawn, handling up to 1,800 watts with a raintight polycarbonate housing rated from -40 to 158 degrees Fahrenheit

  • TypeIndustrial Electrical Controls & Automation
  • Color MappingGray
  • Automatic dusk-to-dawn lighting saves energy
  • Handles up to 1,800 watts of incandescent load
  • Operates reliably from -40 to 158 degrees Fahrenheit
  • Raintight polycarbonate housing protects against weather
  • cCSAus and UL listed for safety compliance

Industrial Photocontrol for Outdoor Lighting

The Intermatic K4321C is a fixed-mount photocontrol designed for 120V AC circuits. It automatically switches connected loads from dusk to dawn using a 1.0 to 5.0 foot-candle turn-on range. The gray polycarbonate housing carries cCSAus and UL listings and meets California Title 20 requirements.

Simple Two-Wire Hookup with Raintight Seal

Installation uses a standard SPST contact form and includes a gasket and wall plate for a raintight enclosure. Wiring must respect the 15 A incandescent and 8.3 A ballast ampere limits. The operating temperature spans -40 degrees to 158 degrees F, so verify the mounting location stays within that range.

1800 Watt Maximum Load Rating

The single specification that determines suitability is the 1,800 W maximum wattage at 120V AC. Circuits exceeding this rating, or loads with inrush currents above the stated ampere limits, require a different control device.

Highlights

  • Automatic dusk-to-dawn lighting saves energy
  • Handles up to 1,800 watts of incandescent load
  • Operates reliably from -40 to 158 degrees Fahrenheit
  • Raintight polycarbonate housing protects against weather
  • cCSAus and UL listed for safety compliance

Specifications

TypeIndustrial Electrical Controls & Automation
BrandINTERMATIC
Color MappingGray

Questions about this item

How can I verify the K4321C photocontrol is operating correctly after installation?

After dusk the connected load should turn on automatically; at dawn it should turn off. The SPST contact switches at 1.0 to 5.0 foot-candles on and 3 to 15 foot-candles off.

What comes in the box with the K4321C and what must I supply separately?

The unit includes a gasket and wall plate. You must provide 120 V AC wiring, a suitable junction box and the lighting load up to 1,800 W.

Which K4321C version should I choose for a 1,800 W HID fixture on a 120 V circuit?

This single model handles 1,800 W maximum across fluorescent, HID and incandescent loads at 120 V AC with 8.3 A ballast and 15 A incandescent ratings.

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