Protective Switch Details TRIZ Cases
- Electric Heater Cutoff Layout for Relay-Free Overtemperature Protection
A glass-bead thermal cutoff in an air-channel depression disconnects the heater without relays, reducing overheating and fire risk.
- Arc Extinguishing Assembly With Inclined Guides for Low-Voltage Quenching
Inclined arc guides create a transient pressure difference that drives the arc toward the grid and runner for more reliable low-voltage extinguishing.
- Integrated Solid-State Breaker Module for Compact DC Converter Protection
A sealed gas-chamber breaker module combines switch, relay, fuse, and sensing to simplify DC converter overcurrent protection.
- Two-Pole Circuit Breaker With Common Pyrotechnic Arc Interruption
A single pyrotechnic actuator opens two series poles together for faster contact separation, stronger arc extinction, and easier maintenance.
- Arc Extinguishing Assembly Sealing for Higher Breaker Pressure
A deformable sealing member closes gaps between the breaker and arc assembly, raising temporary pressure for smoother arc extension and extinction.
- Secondary Switching Mechanism to Prevent Fault Current Contact Welding
Rogowski coil di/dt sensing and solenoid actuation fully open secondary contacts during faults to prevent welding and limit let-through energy.
- Circuit Breaker Layout for Magnetic Arc Extinction
A central contact layout with surrounding mechanisms and magnetic arc control improves arc extinction, isolation, and modular breaker design.
- Electronic Protection Switching Without Arc Damage or Quenching Chambers
Solid-state switching opens fault currents without electric arcs, avoiding quenching chambers while improving breaking power and service life.
- Circuit Breaker Housing Grooves for Arc Insulation
Inner-wall grooves in a circuit breaker housing trap evaporated copper, maintain insulation, and suppress arc discharge after conductor cutting.
- Contactor Voltage Monitoring for Secondary Switch Fault Protection
Intermediate-point voltage monitoring detects secondary switch faults and protects the contactor from further electrical wear or damage.
- Circuit Breaker Heat Collector Layout for Compact Thermal Isolation
An embedded heat collector transfers breaker heat to an earth-potential heatsink, cutting clearance, size, and cooling cost.
- Switching Device Degradation Detection via Release-to-Drive Timing
Tracks release-to-drive timing over repeated actuations to detect control mechanism aging in switching devices without extra sensors.