Overview
The Intermatic K4236-8 is a thermal-type photocontrol engineered to deliver reliable dusk-to-dawn lighting control for outdoor fixtures and security applications. Part of the K4200 series, this unit combines proven mechanical reliability with temperature-compensated sensor technology. Its stem and swivel mounting design enables quick, flexible installation on street lights, parking lot fixtures, and building-mounted exterior lighting.
Key Features
- Dual Voltage Compatibility: Operates at 120 to 277 VAC nominal, accommodating single and multi-voltage electrical systems
- Load Capacity: Rated for 1800–4150 watts tungsten and 8.3 amps ballast, supporting incandescent, LED, and fluorescent luminaires
- Thermal Bimetal Design: Incorporates dual temperature compensating bi-metal blades and cadmium sulfide photocell for reliable operation across temperature extremes
- Delay Action: Eliminates unwanted switching caused by car headlights and transient lighting, reducing nuisance turn-offs
- Sealed Housing: Constructed of high-impact polycarbonate for weather resistance and durability in outdoor environments
- Factory Tested: 100% factory tested for function within specified light levels
Technical Specifications
- Voltage: 120–277 VAC ±10%
- Current Rating (Tungsten): 15 amps
- Current Rating (Ballast): 8.3 amps
- Tungsten Load: 1800–4150 watts
- Ballast Load: 1000–2300 VA
- Frequency: 50/60 Hz
- Sensor Type: Cadmium sulfide photocell with chemically treated/polymer encapsulation
- Contact Form: SPST (Single Pole Single Throw)
- Wire Gauge: 18 AWG
- Mounting: Stem and swivel type with all necessary hardware and instructions
- Housing Material: High-impact polycarbonate
- Operating Temperature Range: –40°F to +158°F
- Sensitivity: 1–5 fc turn-on / 3–15 fc turn-off
- Series: K4200
Typical Applications
- Street and area lighting with dusk-to-dawn automation
- Parking lot and perimeter security lighting
- Outdoor wall and landscape lighting fixtures
- Pedestrian pathway and building facade lighting
- Any outdoor fixture requiring reliable photosensor control
Compatibility & Replacements
Compatible With
- Standard outdoor lighting fixtures with 120–277V AC supply
- Tungsten and incandescent lamp circuits
- Ballast-type fluorescent and compact fluorescent loads
- Pole-mounted and box-mounted installations
- Manual or automatic lighting control systems
Replaces / Drop-In Replacement For
- Intermatic K4236C (K4200 series equivalent)
- Legacy K4236 models (verify swivel arm configuration)
Works With
- Any AC-powered exterior lighting installation 120–277V nominal
- Hardwired field-installation applications (no software or network protocol)
- Passive, line-voltage control—no programmable logic or Smart Grid integration
