DESCRIPTION
The AT S-125A-rs changeover switch is designed to automatically transfer load circuits from main power source to reserve source in a wide variety of 1-3 phase applications.
FEATURES
Electric motor gear activated switching;
1-3 phase 4 pole operation;
Auto and Manual mode switch;
3 position switch handle("I"-"0"-"II");
Generator start/stop remote control outputs;
High reliability and low power consumption due to fixed positions of the change-over mechanism energized during switching process only;
Front side position indication pointer and external lamp outputs;
Control signal protection fuses;
Built-in mechanical and electrical interlocking.
INPUTS AND OUTPUTS
Normal source inputs: R, S, T, N;
Reserve source inputs: R, S, T, N;
Load cirquit outputs: R, S, T, N;
External indication lamp outputs.
TECHNICAL SPECIFICATIONS
Rated Operating Voltage: 230/400V(2-3 phase), 230V (1 phase), 120/208V(3 phase), 120/240V (2 phase).
Voltage frequency: 50/60Hz.
Switching poles: 4
Rated operating current: up to 125А per device pole;
Working temperature range: от -5'C до +40'C;
Humidity: up to 95%;
Installation type: vertical;
Switching current: up to 0.5A;
Switching time: 1-2 sec;
Rated insulation voltage: 800V
Rated impulse withstand voltage: 8kV
Rated making capability: 10KA
Rated short-time withstand currrent Ie 30ms:17KA
Nominal control supply voltage: 230VAC
Life switching cycles: up to 10000;
Use category: AC-331B;
Altitude: up to 2000 meters;
Protection class: IP30
Weight: 2.2 kg.