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Intermatic K4141C stem-mount thermal photocontrol with polycarbonate housing

Intermatic

Intermatic K4141C 120V 25A Stem Mount Thermal Photocontrol

SKU CH-G761-BNYHD

A 120-volt thermal photocontrol with stem mounting for dusk-to-dawn lighting, rated 25 amps and 3000 watts

  • Dusk-to-dawn control with delay ignores lightning and headlights
  • 25 A tungsten and ballast rating at 120 V
  • 3000 W capacity for street and area lighting
  • California Title 24 compliant for regulated installations
  • Polycarbonate housing with composite resistor and dual bimetal for long life

120V 25A Stem Mount Photocontrol

The Intermatic K4141C is a thermal-type photo control designed for outdoor lighting circuits. It provides automatic dusk-to-dawn operation for street, parking lot, roadway, billboard, area, municipal, and security lighting applications. The stem mount design allows direct installation into a fixture knockout or junction box. It is rated for 120 volt supply voltage.

Delay Action Thermal Switching

A built-in delay prevents the load from switching off due to brief light sources such as lightning or passing vehicle headlights. The thermal mechanism uses a composite resistor and dual temperature compensating bimetal for stable operation across ambient temperature changes. It handles up to 3000 watts tungsten and 25 amps ballast load at 120 volts. The polycarbonate housing protects internal components from weather exposure.

California Title 24 Compliance

This model meets California Title 24 energy efficiency standards for outdoor lighting controls. Compliance ensures the device satisfies state requirements for automatic shutoff and lighting control functionality. The K4100 series includes single and multi volt models sharing the same stem mount form factor. No additional accessories or software are bundled with this photo control unit.

Highlights

  • Dusk-to-dawn control with delay ignores lightning and headlights
  • 25 A tungsten and ballast rating at 120 V
  • 3000 W capacity for street and area lighting
  • California Title 24 compliant for regulated installations
  • Polycarbonate housing with composite resistor and dual bimetal for long life

Specifications

BrandIntermatic

Questions about this item

How is the stem-mount photocontrol installed, and what step is often missed?

Thread the 1/2-inch stem into a knockout on the fixture or junction box, tighten the locknut, then connect line, load, and neutral wires; the step often missed is verifying the 120 V supply matches the unit rating before energising.

What maintenance or replacement will the K4141C need later?

The thermal bimetal and composite resistor are sealed for long life; no user-serviceable parts exist, so the entire photocontrol is replaced when the dusk-to-dawn switching fails or the polycarbonate housing degrades.

What limit appears first under sustained 25 A tungsten or ballast loading?

The 3000 W / 25 A rating at 120 V is the thermal ceiling; continuous operation at that level will trip the internal bimetal protection before any other component reaches its limit.

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