Intermatic - GMXST-I-120 - 24-Hour 120V Electromechanical Timer

IntermaticSKU: GMXST-I-120

Sale price $71.81
Sold out


Spec Sheet  Install Manual

Intermatic GMXST-I-120 24-Hour 120V Electromechanical Timer, 15 Minute Intervals, 21A, SPDT, Type 1 Indoor Plastic Enclosure

The GMX series time switches are universal mechanical time switches. They are a low cost alternative for applications that do not require more than 21 A or 2 HP @ 240 VAC. The timer is mounted in a UL Type 1 indoor or Type 3R outdoor plastic enclosure. The GMX is a light-duty commercial time switch ideal for 24, 120 or 208/240 VAC single-phase general applications.


  • 21 A SPDT Switch
  • UL Type 1 indoor or Type 3R outdoor plastic enclosure
  • Manual 3-way override
  • Captive trippers with 15-minute intervals on 24-hour models and 2-hour intervals on 7-day models
  • True clock face, easy to set
  • Finger-safe terminals
  • Enclosure provides space for field-added contactor or other accessories
  • Synchronous drive or quartz drive ("Q" models) with self-charging battery backup


  • Aeration
  • Air Movement & Ventilation
  • Generator Exercising
  • Refrigeration Merchandiser
  • Septic Treatment


Input Voltage Range(s) 120 VAC, 60 Hz Mounting Options Wall
Resistive 21 A, 250 VAC, 60 Hz Switch Type SPDT
Enclosure Type Indoor type 1 plastic Has Real-time Clock Face Yes
Warranty Period 1-Year limited Wiring Option Screw terminal accepts up to #12 AWG wire
Application Compatibilities CFL, Fluorescent, Incandescent, LED Backup Protection Time 7-day
Category Timer Controls Web Clock Drive Type Synchronous
Has Captive Trippers Yes Has Finger-Safe Terminals Yes
Has Override Switch Yes Maximum Cycle Time 24 hrs
Minimum Cycle Time 15 min Motor (Three-Phase) 1 HP, 120 VAC; 2 HP, 250 VAC
Operating Humidity 0 to 95%, Non-condensing Shortest switching time ON/OFF 15 minutes
Timing Interval 15 min Tungsten (NO) 1350 W, 120 VAC, 60 Hz
Wire Size Max #12 AWG Operating Temperature Max (°C) 85
Operating Temperature Max (°F) 185 Operating Temperature Min (°C) -40
Operating Temperature Min (°F) -40 Product Depth (in) 3 3/4
Product Depth (mm) 95 Product Height (in) 10
Product Height (mm) 254 Product Width (in) 6 1/2
Product Width (mm) 165 Unit Carton Height (in) 4.125
Unit Carton Length (in) 10.125 Unit Carton Weight (lb) 1.607
Unit Carton Width (in) 6.875

Shipping Policy



You may also like

Recently viewed