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Small rectangular photocontrol in translucent red polypropylene housing with turn-lock mounting base

Intermatic

Intermatic LC4523LA Photocontrol 4150 W 208-277V AC Translucent/Red

SKU CH-R1ZJ-SFQFF

Photocontrol switches lighting dusk-to-dawn at 208-277 V AC up to 4,150 W with SPST contact

  • Color familyTranslucent/Red
  • Product typeIndustrial Electrical Controls & Automation
  • Automatic dusk-to-dawn lighting control saves energy
  • 4150 W capacity handles heavy commercial loads
  • 208–277 V AC range fits industrial power systems
  • Raintight polypropylene housing withstands harsh outdoor conditions
  • UL Listed and ANSI C136.10 certified for code compliance

Photocontrol 208–277 V AC

The Intermatic LC4523LA is a turn-lock photocontrol rated for 208 to 277 volts AC. It provides automatic dusk-to-dawn switching for outdoor lighting circuits up to 4,150 watts. The unit suits commercial and industrial installations requiring raintight enclosure protection.

Thermal range and power ratings

Operating temperature spans -20 °F to 104 °F. The switch handles 15 A incandescent and 8.3 A ballast loads. Turn-on occurs at 0.5 foot-candles and turn-off at 15 foot-candles. Polypropylene housing meets ANSI C136.10, cCSAus, California Title 20 and UL listed standards.

SPST contact form constraint

The single-pole single-throw contact opens one leg of the circuit only. Buyers needing to switch both lines or requiring a double-pole device must select a different control.

How it compares

Measured against everything we stock in Electrical Switches & Dimmers, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 73% of the 791 comparable items (median $39.99).

Specifications

Product
Brand nameINTERMATIC
Color familyTranslucent/Red
Product typeIndustrial Electrical Controls & Automation

Questions about this item

How do I install the turn-lock photocontrol and what is the common mistake?

Twist the unit into the matching ANSI C136.10 receptacle until it locks; the step often missed is verifying the 208-277V AC supply before powering the circuit.

What maintenance or replacement will the LC4523LA need over time?

The polypropylene housing and raintight seal are maintenance-free; replace the entire photocontrol if the SPST contact fails to switch at the .5 fc on / 15 fc off thresholds.

What is the first limit reached under continuous dusk-to-dawn operation?

The 4,150 W / 15 A incandescent or 8.3 A ballast rating is the first ceiling; sustained loads above either value will trip the thermal protection before the -20 to 104 °F ambient range becomes a factor.

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