Overview
The Dayton 2E259A is a professional-grade 24-hour electromechanical timer switch designed for scheduled control of heavy electrical loads in industrial and commercial applications. With its proven mechanical dial design and weather-resistant Raintite steel enclosure, this double-pole switch delivers reliable on/off automation for HVAC systems, lighting, pumps, and other equipment requiring precise time-based control.
Key Features
- 24-hour electromechanical timer with dial control interface
- Double-pole DPST-NO (Double Pole Single Throw Normally Open) contact configuration
- Rated 40A at 277V AC, 60Hz
- Up to 12 independent on/off switching cycles per day
- Manual override function does not alter programmed schedule
- Durable steel enclosure with gray enamel Raintite finish for outdoor protection
- Two trippers included for flexible scheduling
Technical Specifications
- Timer Type: 24-hour electromechanical
- Voltage: 208–277V AC
- Amperage: 40A
- Frequency: 60Hz
- Poles: 2 (double pole)
- Contact Form: DPST-NO
- Contact HP @ 120V: 2 HP
- Contact HP @ 240V: 5 HP
- Minimum Time Setting: 1 hour
- Maximum Time Setting: 23 hours
- On/Off Cycles: 12 per day
- Enclosure: Steel with gray enamel outdoor finish
- Dimensions: 9.4″ L × 5.5″ W × 3.6″ D
- Included Trippers: 2 (additional 2E054 trippers available)
Typical Applications
- HVAC unit scheduling and circulation control
- Outdoor lighting and parking lot automation
- Pump and motor start/stop cycles
- Commercial refrigeration equipment timing
- Industrial facility load management
- Water heater and boiler scheduling
- Building automation for energy efficiency
Compatibility & Replacements
Compatible With
- Standard 208–277V AC single-phase power systems
- Dedicated branch circuits or sub-panel installations
- Equipment rated 40A or less at 120V–277V
- Manual or automatic override control scenarios
Replaces / Drop-In Replacement For
- Legacy Dayton 2E259 models (non-A suffix)
- Intermatic equivalent mechanical 24-hour timers in 40A class
- Other double-pole 277V mechanical time switches with similar footprint
Works With
- Standard building electrical wiring and conduit
- Industrial panel schedules and breaker configurations
- Manual reset and override systems
- No programming software required; fully mechanical operation
