Low-voltage device (LVD) SPASSK-89 for currents up to 5000A is a panel of unilateral and bilateral service in metal cases with a fixed or withdrawable circuit breakers with air-insulated. NKU SPASSK-89 used as shields switchgear with voltage of 0.4 kV (RU-0.4 kV) substations, main switchboards (MSB) of industrial buildings, control panels motor loads.