T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 3 Circuit Lighting Control Centers, Metal Indoor NEMA 1, 120 VAC Input Supply, 3 SPDT Output Contact
This NSi Industries T930-L mechanical time switch and photocontrol accepts 120 VAC input and each of its three circuits can activate a 10 amp load or 1 hp motor. The included remote photocell turns on lighting when the ambient light level drops below 1.5 to 5.5 foot candles (fc) and turns the lighting off when the level exceeds 5.5 foot candles. A spring-wound backup power supply preserves timer settings up to 24 hours. The timer includes one pair of contact trippers per day and is suitable for individualized daily operation. The timer has a minimum On cycle time of one hour and a minimum Off cycle time of two hours. The single-pole double-throw (SPDT) contacts are housed within a metal enclosure that meets NEMA-1 standards for dust resistance and has a lockable hasp. The enclosure is suitable for indoor use and mounts to an external surface. This mechanical timer is Underwriter Laboratories (UL) listed for quality assurance and is suitable for controlling parking lot lighting, HVAC, display lighting, security lighting, lighted signage, and storefront lighting.
| Switch type | Mechanical 7-day timer and photocontrol, contact trippers for one on/off cycle (included). Accommodates 7 pair additional trippers (not included). Skip-a-day operation. |
| Input power supply | 120 VAC, 60 Hz, 5 W power consumption, spring-wound 24-hour reserve power |
| Output contacts | SPDT contacts, 10 amp load rating |
| On/off control | One-hour minimum On cycle, two-hour minimum Off cycle, eight hours minimum between Off cycles. Photocell operation at 1.5 to 5.5 foot candles. |
| Enclosure | NEMA-1 metal enclosure for indoor use, external surface mount, lockable hasp |
| Terminal wire size range | #8 to #14 AWG (American wire gauge) |
| Operating temperature range | -40 to +165 degrees F (-40 to +74 degrees C) |
| Standards met | UL Listed |
Automatic switches are used to turn on or off electrical devices and are activated by time, light, and motion. Time activated switches (also known as timers) operate at preset time intervals during a daily or weekly period and can be either mechanical or electronic. Mechanical timers feature a dial with multiple pins to set the on/off time intervals. Electronic timers feature an LCD display and pushbuttons to set the time intervals. Light activated switches (also known as optical or photo) operate when ambient light levels reach preset values, generally measured in foot candles. Motion-activated switches (also known as motion sensors) operate when an electronic field of a preset range is interrupted. These switches can include energy saving logic that uses combinations of time, light, and motion to operate and can include one or more device outlets or circuit contacts. Automatic switches are used to control indoor lights, outdoor lights, appliances, and small equipment motors.
NSi Industries manufactures electrical components and sensors, lighting products, and energy management products. The company, founded in 1975, is headquartered in Huntersville, NC.
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