Product Description:

FZN25-12(D) indoor AC high-voltage vacuum load switch and FZRN25-12(D) indoor AC high-voltage vacuum load switch-fuse combination are control and protection devices for three-phase AC 50HZ, 12KV power distribution systems. Widely used in industrial and mining enterprises and urban building power distribution stations and other places. Combined electrical appliances are more reliable than circuit breakers in protecting electrical equipment such as transformers, and are especially suitable for ring network cabinets, dual-radiation power supply units and box-type substations.

Item Meaning:

Application Condition:

• Ambient Air Temperature: -25℃~+40℃ / -13℉~+104℉ (Allow storage and transportation at -30℃/-22℉）
• Relative Humidity: daily average≤95%；monthly average≤90%
• Altitude: ≤1000m
• Earthquake Intensity: ≤8 degree
• Pollution Level: Ⅱ
• Installation Environment: No dripping water, no flammability and explosion hazard, no chemical corrosive gas, no violent vibration
• Notice: please contact us if the application environment is beyond above range.

Structure Feature:

◆ This product uses a vacuum interrupter to extinguish arcs, with stable and reliable performance, long electrical life, high breaking times, strong closing and breaking capabilities, and easy operation and maintenance.

◆ Integrate switch body and operating mechanism into one. It integrates isolating switch, load switch and grounding switch. Compact structure and small volume.

◆ The direct-acting isolation fracture and the vacuum interrupter are arranged in series, the dynamic and thermal stable current parameters are high, and the unique linkage according to the prescribed operating procedures completes the operation at one time.

◆ Conical static contact, insulating cover and valve structure completely separate busbar and load switch unit.

◆ Vacuum load switch, grounding switch, valve, and switch cabinet door are mechanically interlocked strictly according to the “five preventions” to prevent misoperation and are safe and reliable.

◆ The operating mechanism of spring energy storage type can be opened and closed electrically, and can also be opened and closed manually, which is convenient for realizing the “three remote” requirements.

◆ The power supply for opening and closing operation can be used for both AC and DC.

◆ The normal type of switch is side-mounted and right-handed operation, and it can also be provided with front-side operation or left-side operation according to user requirements.

Main Technical Parameters：