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ZN85 40.5A 1250A 2500A Indoor Vacuum Circuit Breaker

Basic Information
Place of Origin: XIAN, China
Brand Name: XG
Certification: ISO CCC
Model Number: ZN85
Minimum Order Quantity: 1 SET
Packaging Details: WOODEN CASE
Delivery Time: 7-15 DAYS
Payment Terms: L/C, T/T, D/A, D/P, Western Union, MoneyGram
Supply Ability: 2000 SET
Detail Information
Type: Indoor Rated Voltage: 33kv,36kV, 40.5kV
Rated Current: 400A 630A, 1250A, 1600A, 2000A, 2500A, 3150A, Frequency: 50/60Hz
Medium: Vacuum Material: Galvanized Sheet And Accessories
Standard: GB, IEC Standard Function: Control And Protection
High Light:

40.5A Vacuum Circuit Breaker


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Product Description

1. ZN85 40.5a 1250A 2500A 300mm indoor vacuum circuit breaker modular mechanism


ZN-85-40.5 (modular type) indoor vacuum circuit breaker is suitable for indoor high voltage equipment with rated voltage of 40.5kV and three-phase AC 50Hz. It can be used as industrial and mining enterprises, power plants and substations as load current, overload current and short circuit. For current use, it is suitable for frequent operation.


2. Environmental conditions:


1. Altitude: the altitude does not exceed 2000m;

2. Ambient temperature: no higher than +40℃, not lower than -25℃;

3. Relative humidity: the daily average does not exceed 95%, and the monthly average does not exceed 90%;

4. Earthquake intensity: no more than 8 degrees;

5. Locations without fire, explosion hazard, serious contamination, chemical corrosion and severe vibration.


3. Structural features:


1. The circuit breaker adopts the arc extinguishing chamber on the upper part, and the structure of the whole structure under the mechanism is favorable for debugging;

2. It adopts composite insulation structure of air and organic materials, which is compact in design and light in weight;

3. It can be equipped with the vacuum interrupter of Cutler-Hammer Company of the United States and the domestic ZMD vacuum interrupter. The two arc extinguishing chambers adopt the longitudinal magnetic field arc extinguishing, low interception and good asymmetric breaking performance.

4. Simple spring operating mechanism, 10,000 operations free of maintenance.

5. Screw drive mechanism, labor-saving, stable, self-locking performance.


4. main technical parameters



Name Unit Value
Rated voltage KV 40.5
1min power frequency withstand voltage (effective value) KV



Lightning impulse withstand voltage (effective value) KV



Rated frequency Hz 50
Rated current A 1250,1600,2000
Rated short-time withstand current KA 25,31.5
Rated peak withstand current KA 63,80
Rated short circuit duration S 4
Rated short-circuit breaking current KA



Rated short circuit closing current KA 63,80
Rated operation sequence   0-0.3s-Co-180s-Co
Break time ms <80
Rated short-circuit breaking current breaking times time



Single capacitor bank breaking current A 630
Back-to-back capacitor bank breaking current A 400
Rated operating voltage V ~110/-110,~220/-220
Mechanical life time




5. Photo and drawing







1. Send the technical data, better for all useful information; we will make a good recommendation.

If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.

2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.

3. Usually shipped by sea, small order or urgent order we can send you by air.

4. All our activities are accredited to ISO 14001:2015 and IEC standard.



Contact Details

Phone Number : +8613319220197

WhatsApp : +8613319220197