ZN85 Indoor Vacuum Circuit Breaker
2.Rated Frequency:50Hz
3.Temperature: Ambient air: -15°C to +40°C; Daily average: ≤35°C
4.Humidity: Daily average relative humidity ≤95% (vapor pressure ≤2.2kPa); Monthly average relative humidity ≤90% (vapor pressure ≤1.8kPa)
5.Altitude: ≤1000m
6.Air Quality: No visible dust, smoke, corrosive/combustible gases, vapors, or salt spray
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
1.ZN85 Indoor Vacuum Circuit Breaker: Reliable Power Protection for Demanding Environments
When safeguarding electrical systems in industrial and commercial settings, the ZN85 Indoor Vacuum Circuit Breaker stands out as a robust, adaptable solution. Designed for medium-voltage applications up to 40.5kV, this vacuum circuit breaker combines cutting-edge technology with modular flexibility to meet the unique challenges of modern power distribution. Whether you operate in high-humidity tropical regions or require seamless integration with KYN61 switchgear cabinets, the ZN85 delivers unmatched reliability and longevity.
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2.Technical Specifications at a Glance
- Rated Voltage: 40.5kV
- Rated Frequency: 50Hz
- Ambient Temperature Range: -15°C to +40°C
- Humidity Tolerance: ≤95% daily average
- Altitude Compatibility: Up to 1,000m
- Mechanical Endurance: 20,000+ operations
- Short-Circuit Interruptions: 100+ cycles (IEC 62271-100 certified)
| Parameter | Unit | Data |
| Rated voltage | kV | 40.5 |
| 1 min power frequency withstand voltage(effective value) | kV | 95 |
| Lightning impulse withstand voltage(peak) | kV | 185 |
| Rated frequency | Hz | 50 |
| Rated current | A | 1250、1600、2000 |
| Rated short-time withstand current | kA | 31.5 |
| Rated peak withstand current | kA | 80 |
| Rated short-circuit duration | S | 4 |
| Rated short-circuit opening current | kA | 31.5 |
| Rated short-circuit closing current | kA | 80 |
| Standard operating sequence | O-0.3s-CO-180s-CO | |
| Breaking time | ms | 80 |
| Rated short-circuit breaking current opening times | times | 20 |
| Single capacitor bank opening current | А | 630 |
| Back-to-back capacitor bank opening current | А | 400 |
| Rated operating voltage | V | -110/~110,-220/~220 |
| Mechanical endurance | times | 10000 |
3.Key Features & Competitive Advantages
1. Adaptable Design for Global Markets
- KYN61 Cabinet Integration: Pre-engineered compatibility eliminates retrofitting costs.
- Handcart/Fixed Configurations: Choose between mobile or stationary installations.
- Dual-Voltage Options: 12kV/40.5kV variants available for South American grids.
2. Engineered for Extreme Conditions
- Corrosion-resistant coatings withstand coastal and tropical climates.
- IP65-rated models (optional) for flood-prone Southeast Asian regions.
3. Smart Maintenance & Longevity
- Modular spring-operated mechanism enables quick field repairs.
- IoT-ready sensors (ZN85-P model) for predictive maintenance.
4. Certified Performance
- Complies with IEC 62271, CE, and ISO 9001 standards.
- Pre-certified for SONCAP (Africa), TISI (Thailand), and INMETRO (Brazil).
4.Real-World Applications
Be used in a wide range of industries.
Industrial Plants
Eliminate power factor penalties in CNC machines and assembly lines while handling surge currents up to 100x rated capacity.
Substation
Stabilizes substation voltage against harmonics and intermittent generation from renewable inverters.
Commercial Buildings
Retrofit aging systems in hospitals or malls with silent (<45dB), flame-retardant capacitors that meet NFPA 70 fire codes.
5.Intelligent Design & Operation
1. Vacuum Interruption Technology: Eliminates arc hazards during fault conditions.
2. Spring-Driven Mechanism: Reduces reliance on external power sources.
3. User-Friendly Interface: Clear status indicators and ergonomic controls.
6.Precision Manufacturing & Quality Assurance
Every product undergoes:
- Material Screening: Aerospace-grade alloys for contacts and shields.
- Multi-Stage Testing: Dielectric strength, mechanical endurance, and thermal stability checks.
- Traceability: Laser-etched serial numbers for lifecycle monitoring.
7.Why Partner With Us?
- Certified Excellence: ISO 9001 (Quality), ISO 14001 (Environmental), and ISO 45001 (Safety) certified.
- Innovation Legacy: 15+ patents in vacuum interruption technology.
- Global Support Network: 72-hour spare parts delivery to major ports.
- Custom Solutions: Dual-branding, regional firmware, and language-specific manuals.
8.FAQs
1. Is the ZN85 compatible with KYN61 cabinets?
Yes – it’s pre-configured for plug-and-play installation.
2. What certifications do you offer?
We provide IEC, CE, and region-specific approvals like SONCAP.
3. How often should maintenance be performed?
Recommended every 5 years under normal conditions; IoT models enable real-time monitoring.
4. Can I order dual-voltage units?
Absolutely – our ZN85-H hybrid model supports 12kV/40.5kV switching.
9.Contact Us
Need a ZN85 Indoor Vacuum Circuit Breaker Quote or Technical Details?
Email Our Team: xaxd_electric@163.com
10.Factory Show
11.Equipment Display
12.Application Cases
State Grid systems, power engineering, steel and metallurgy, petrochemicals, rail transportation, energy and water conservancy, construction, environmental protection, and renewable energy sectors
13.Team and Exhibition
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