High Voltage Breakers
supertran DTCB Dead-tank high voltage circuit breakers are designed for reliable, long-term performance in transmission and substation environments up to 550 kV.
FROM 31.5kVA
TO 63kVA
UP TO 550kV
Overview
Each circuit breaker utilizes proven gas-insulated interrupter technology for dependable switching under the most demanding operating conditions.
The DTCB line is built for high mechanical endurance, low maintenance requirements, and exceptional dielectric strength in outdoor environments.
Technical Ratings
| Rated Voltage | Rated Current | Short-Time Withstand Current | Temperature Range |
| 38 kV | up to 2500 A | up to 31.5 kA | -22°F to 131°F |
| 72.5 kV | up to 4000 A | up to 40 kA | -22°F to 131°F |
| 145 kV | up to 3150 A | up to 63 kA | -22°F to 131°F |
| 245 kV | up to 4000 A | up to 63 kA | -18.4°F to 131°F |
| 362 kV | up to 4000 A | up to 50 kA | -13°F to 131°F |
| 550 kV | up to 6300 A | up to 63 kA | -22°F to 131°F |
Specifications
Key Features
- Advanced puffer-type interrupter design for efficient arc control and reduced energy consumption.
- Maintenance interval designed for up to 15 years under normal service conditions.
- Fully type-tested to meet international standards for performance and reliability.
- Available in three-phase (≤252 kV) and monopole (above 252 kV) configurations.
- Compact design optimized for simplified installation and field service.
- Rugged construction suitable for wide temperature ranges and outdoor exposure.
Design and Standards
supertran Dead Tank Circuit Breakers are built to meet or exceed IEC 62271-100 and IEEE C37 standards.
The design features a sealed SF₆ gas-insulated dead tank housing, providing exceptional dielectric strength and long-term reliability.
Each mechanism is engineered for low operating energy and high mechanical endurance, ensuring dependable operation throughout its service life.
Electrical and Mechanical Characteristics
- Rated Frequency: 60 Hz (50 Hz available upon request)
- Interruption Method: Single-pressure SF₆ self-blast puffer system
- Operation Sequence: O-0.3s-CO-3min-CO
- Insulation Medium: SF₆ gas, hermetically sealed tank
- Mechanism: Spring or pneumatic type (based on voltage class)
- Application: Transformer and line switching, substation protection, and grid interconnection systems
Manufacturing and Applications
Each unit undergoes strict quality control and functional testing to ensure performance under severe environmental and electrical conditions.
Typical lead times range from 7–12 months depending on configuration and project requirements.
The supertran DTCB Series is ideally suited for transmission substations, renewable energy integration, and expansion of the high-voltage grid.
Our Promise
Exceptional
quality
We implement strict quality control measures at every stage of production to ensure our products meet or exceed industry standards.
Custom-Built
Excellence
From FR3 to upgraded insulation options, we offer tailored builds to meet your cooling, environmental, and safety requirements.
Dedicated support
We arrange responsive service, technical expertise, and reliable warranty support, all from a U.S.-based team.
Comprehensive
warranty
We stand behind our products with a robust warranty that covers both materials and workmanship.
Competitive
pricing
We deliver exceptional value so you receive top-tier, reliable, high-quality products without the premium price tag.
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High Voltage Breaker
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