Indoor High-Voltage AC Vacuum Circuit Breaker
VTB-40.5(ZN85)
Product Overview
Advanced switchgear designed for reliable power distribution and protection in utility and industrial applications.
Inquire NowTechnical Specifications
| Rated Voltage | 40.5 kV |
| Rated Frequency | 50 Hz |
| Rated Current | 630/1250/1600/2000/2500/3150/4000 A |
| Power Frequency Withstand Voltage(1 min)-Phase-to-Phase/To Earth | 95 kV |
| Power Frequency Withstand Voltage(1 min)-Across Open Contacts | 118 kV |
| Power Frequency Withstand Voltage(1 min)-Auxiliary &Control Circuit | 2 kV |
| Lightning Impulse Withstand Voltage-Phase-to-Phase/To Earth | 185 kV |
| Lightning Impulse Withstand Voltage-Across Open Contacts | 215 kV |
| Rated Short-Circuit Breaking Current | 25/31.5/40 kA |
| Rated Short-Circuit Making Current | 63/80/100 kA |
| Rated Peak Withstand Current | 63/80/100 kA |
| Rated Short-Time Withstand Current | 25/31.5/40 kA |
| Rated Short-Circuit Duration | 4 s |
| Rated Operating Sequence | O-0.3s-CO-180s-CO |
| DC Component of Rated Short-Circuit Breaking Current | 42 % |
| Rated Short-Circuit Breaking Current Endurance | 50 (for 1250A and 31.5kA or below), 30 (for 1600A or 40kA and above) cycles |
| Mechanical Life | 20,000 (for 1250A and 31.5kA or below), 10,000 (for 1600A or 40kA and above) cycles |
| Rated Cable Charging Breaking Current | 50 A |
| Rated Two-Phase Grounding Breaking Current | 21.8/27.4/34.8 kA |
| Rated Out-of-Phase Breaking Current | 6.25/7.87/10 kA |
| Rated Operating Voltage | AC/DC 220V, AC/DC 110 V |
| Vacuum Interrupter Vacuum Level | ≤1.33x10-3 Pa |
Frequently Asked Questions
What is the rated voltage?
The rated voltage is 40.5 kV.
What is the rated frequency?
The rated frequency is 50 Hz.
Is this product single-phase or three-phase?
This product is 185 kV.
Can this product be customized?
Yes. GOHOMIN accepts customization requests for this product, including voltage rating, capacity and enclosure/protection level. Contact us with your specification and we will confirm feasibility and lead time.
What certifications does this product meet?
GOHOMIN products are manufactured to IEC standards and available with CE, UL, RCM, GCC, SIRIM and QUACERT-VCN certification depending on the market and project requirements.
What is the minimum order quantity?
MOQ depends on the product type and specification. GOHOMIN is a factory-direct manufacturer and normally accepts trial orders for project evaluation. Contact us for the specific MOQ of this item.
How long is the production lead time?
Lead time depends on specification and current production schedule. Standard models are typically faster than customized units. Contact us with your required quantity and target delivery date for a firm schedule.
Which markets do you export to?
GOHOMIN serves overseas B2B customers worldwide, with focus on Southeast Asia, the Middle East, Africa, Latin America, Central Asia and Oceania, supplying power utilities, EPC contractors, renewable energy developers and electrical distributors.