Nsi Industries SS20 Interval Wall Timer 18hr 24-277V

Product Description

The NSI INDUSTRIES SS20 is an interval wall timer designed for controlling lighting circuits in residential and light commercial applications. It supports a maximum interval of 18 hours and operates across a wide voltage range of 24 to 277 volts, making it suitable for both low-voltage and standard line-voltage installations. The timer handles loads between 12 and 150 watts and is rated for 3-way switching configurations. The white finish is compatible with standard decorator-style wall plates. Licensed electricians and facilities maintenance technicians are the typical installers.

The SS20 is appropriate for use in offices, hallways, stairwells, storage rooms, and other spaces where timed lighting control improves energy efficiency or convenience. Its 3-way capability allows it to be paired with a compatible switch at a second location. The 24-277V operating range supports a variety of circuit configurations found in both residential panel voltages and commercial lighting circuits.

Key Features

• 18-hour maximum interval setting for extended timed control
• Wide voltage range: 24 to 277 volts for residential and commercial circuits
• Load range of 12 to 150 watts supports standard incandescent and comparable loads
• 3-way switching configuration for multi-location control
• White finish suits standard wall plate installations

Compatibility

Designed as an OEM-style interval timer for standard wall box installations supporting 3-way lighting circuit configurations across 24 to 277 volt systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Turn off and lock out the circuit breaker supplying the circuit before beginning any wiring work. The 3-way configuration requires correct identification of traveler and common terminals before making connections. Do not exceed the 150-watt load rating or the 277-volt maximum operating voltage.

Technical Specifications

• Maximum Interval: 18 hours
• Voltage Range: 24 to 277 volts
• Load Range: 12 to 150 watts
• Switching Configuration: 3-Way
• Color: White

Standard Information

• Brand: NSI INDUSTRIES
• Manufacturer Part Number: SS20