The Model SSS-120VAC-LL was designed as a Primary Stage
protection device for a single 120 VAC line pair. This could be a
floating 120 VAC line pair from an isolation transformer or a utility
line pair with one side referenced to the Neutral/Ground point.
High-Energy MOV Primary Stage protection for a floating single phase 120 VAC feeder
All-Mode protection including both line-to-line and line-to-ground
Equipped with a 3/4" Conduit Offset Nipple for easy mounting to a Service Entrance Panel
120 VAC (Line-to-Line) or (Line-to-Ground) Protection Levels
Maximum No Conduction AC Voltage = 140 Vrms
Maximum 1mA Conduction Voltage = 198 Vrms
Maximum single pulse energy = 600 Joules
Maximum single pulse current = 70,000 Amperes
Clamping level = 360 Volt peak @ 500 Amperes
Mechanical & Temperature Specifications:
Length = 5 in.
Width = 5 in.
Depth = 4 in.
Weight = 1 lb.
The unit is equipped with a 3/4" offset nipple making it "installation-ready"
Operating Temperature Range: -40 to +70°C
Functional Wiring Diagram:
This unit is designed to protect a single line pair AC Power feeder with a nominal voltage of 120VAC. This is a primary stage differential (Line-to-Line)
protector and would be connected at the Breaker / Distribution Panel before the power is distributed throughout the Signal House or Case.
The protected power can be:
An isolated floating (no ground connection) AC feeder from an Isolation Transformer