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.