Intermatic - LC4521LA - Locking Type Thermal Photocontrol, 120 V, Spark Arrestor

IntermaticSKU: LC4521LA

Sale price $14.40
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Spec Sheet  Install Manual

These photocontrols install on light fixtures with ANSI C136.10 NEMA receptacles commonly found on street light fixtures. Locking type design facilitates fast installation and replacement of photocontrol.


  • Mechanical bimetal switch with Cadmium Sulfide photocell
  • Integral high impact thermoplastic housing
  • Locking type plug for quick installation and changeover
  • Delay feature prevents unwanted OFF switching
  • Complies with ANSI C136.10 standard
  • Tested to 3,650 ON/OFF cycles


  • Outdoor Lighting Control


Input Voltage Range(s) 120 VAC, 50/60 Hz Usage Environments Outdoor
Photocontrol Style Locking type Surge Protection Technology Spark Gap Surge Arrestor
Warranty Period 2-Year limited Application Compatibilities HID, Incandescent
Activation Off 15 fc Activation On 5 fc
Category Locking Type Thermal Photocontrols Web Cover Color White with Gray Band
Fail Mode ON Housing Material Polypropylene
Magnetic Ballast (NO) 8.3 A, 1000 VA Magnetic Ballast Range(s) 8.3 A, 1000 VA
Photo Control Switch Type Mechanical Bimetal Photocell Type Cadmium Sulfide
Photocontrol Sensor Location Side Photocontrol Type Thermal
Sensor Time Delay 30 sec to 90 sec Tungsten (NO) 15 A, 1800 W
Tungsten Range(s) 15 A, 1800 W Operating Temperature Max (°C) 70
Operating Temperature Max (°F) 158 Operating Temperature Min (°C) -40
Operating Temperature Min (°F) -40 Product Height (in) 2 3/4
Product Height (mm) 69.9 Unit Carton Height (in) 3.25
Unit Carton Length (in) 3.13 Unit Carton Weight (lb) 0.251
Unit Carton Width (in) 3.13

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