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Korry 307 3/8 x 5/8-Inch Switch and Indicator

Korry 307 Switch

PDF Icon Korry 307 PMA Switch

PDF Icon Korry 307 Chromalux ® Switch Lights

The Korry 307 is an industry benchmark for reliability, with a rugged design and few piece parts. It delivers bright, uniform illumination and low touch temperature normally found only in larger, costlier switches, thanks to a high-efficiency reflector specifically engineered for its two light sources.

For more information or sales assistance, please email sales@korry.com.

Korry 307 Switch Matrix

Summary of Korry 307 Features

  • Long-life single-pole switching, for more than 1 million actuations
  • Mounting versatility with two cap-height options, optional brackets, and simple matrixing
  • Quick front relamping in hinged cap
  • Uniform, sunlight-readable lighting with low surface temperature
  • Choice of flange-based LEDs or T-1 incandescent bulbs in 5 and 28 Volts
  • Optional NVIS lighting
  • Optional 50/50 and 80/20 split legends
  • Optional internal seal

Selected Specifications

All dimensions in inches (mm)

Korry 307 Mechanical Drawing

Korry 307 cutout

Weight: 0.48 oz. (13.6 g) typical; varies with options selected.

Operating Characteristics

Switch type: Momentary, single-pole Form C microswitch, gold or silver contacts
Switch travel:
Switch transfer: 0.025 inch minimum (0.64 mm)
Over travel: 0.015 inch minimum (0.38 mm)
Actuation force: 1-2 pounds (0.45-0.91 kg)
Cap extraction: 2-6 pounds (0.91-2.72 kg)
Actuation life: 1,000,000+ mechanical actuations at room temperature


Switch circuit
single pole
double throw)

Korry 307 Switch Circuit Diagram

Lamp circuit options

'Korry 307 Lamp Circuit Diagram

Lamps: two T-1 incandescent bulbs or flange-based LEDs are available in 5 and 28 Volts.

Terminal options:
Single-turret solder (switch) with eyelet solder (lamp circuit types 1 and 2)
PCB (switch and lamp circuit types 1 and 2)
Screw (indicator only; lamp circuit type 3 only)

For more information, please email us at sales@korry.com.


  • This summary only contains basic marketing information on function or purpose. It does not contain technical data as defined in 15 CFR 772 or 22 CFR 120.10. This information is not subject to US export controls under the EAR or the ITAR.


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