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Gray cylindrical photocontrol with swivel stem and lock nut

Intermatic

Intermatic K4223C Photocontrol 208-277V AC Gray

SKU CH-0YP6-0YZ0H

A dusk-to-dawn photocontrol switches 208-277 V AC loads up to 4150 W, with a raintight polycarbonate housing rated from -40 to 158 °F

  • Automatic dusk-to-dawn lighting control with SPST contact
  • Operates on 208 to 277V AC circuits
  • Handles up to 4150 W ballast loads
  • Raintight polycarbonate housing withstands -40 to 158 °F
  • cCSAus, UL Listed and California Title 20 compliant

Purpose & Fit

The Intermatic K4223C is a dusk-to-dawn photocontrol designed for 208 to 277V AC lighting circuits. It suits commercial and municipal installations that require automatic on-off switching based on ambient light levels.

Thermals, Noise & Power

The unit operates silently with no moving parts across a temperature range of -40 to 158 degrees F. It handles up to 4150 watts and 15 amps for incandescent loads or 8.3 amps for ballast loads within its rated voltage window.

Deciding Specification

The 1.0 to 5.0 foot-candle turn-on threshold determines whether the sensor activates at the desired ambient brightness for a specific site. Buyers needing a different activation level should select an alternative model.

Highlights

  • Automatic dusk-to-dawn lighting control with SPST contact
  • Operates on 208 to 277V AC circuits
  • Handles up to 4150 W ballast loads
  • Raintight polycarbonate housing withstands -40 to 158 °F
  • cCSAus, UL Listed and California Title 20 compliant

Specifications

BrandIntermatic

Questions about this item

How do I wire and aim the stem-and-swivel photocontrol, and what step is often missed?

Mount the stem through a 1/2 in knockout, secure the lock nut and washer gasket for a raintight seal, then rotate the swivel head so the sensor faces north — skipping the gasket is the common leak point.

Which component will need attention first, and what is its rated life?

The SPST relay contacts are rated for 15 A incandescent or 8.3 A ballast at 208-277 V AC; cycling at dusk-to-dawn rates typically wears the contacts before the polycarbonate housing degrades.

What limit appears first during continuous operation in a hot climate?

The 158 °F maximum ambient temperature is reached before the 4150 W ballast or 3100 W incandescent load ratings, so sustained high heat is the governing constraint.

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