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Sensata Technologies HEC High-Efficiency Contactors

Sensata Technologies HEC High-Efficiency Contactors enable seamless switching between 400V and 800V battery configurations, ensuring compatibility with 400VDC and 800VDC fast chargers. These Sensata contactors support drive operation at either voltage. HEC contactors integrate mechanically synchronized contacts, providing an inherently safe and highly efficient switching mechanism. The HEC series features up to five distinct battery configuration states, including independent access to each 400V battery for advanced functions. These configuration modes allow the HEC to deliver safety, ruggedness, simplified integration, reduced cooling needs, and significant system-level savings compared to alternative solutions.

Features

  • Up to five battery configuration states
    • Standard states
      • Series mode (800V drive/ charge)
      • Parallel mode (400V drive/charge)
      • Isolation mode (all open)
    • Optional single-path states
      • A-only (Battery A only)
      • B-only (Battery B only)
  • Up to 1000A continuous current
  • ~50µΩ (low and stable) contact resistance
  • 90g shock robustness
  • 25kA short-circuit withstand
  • <0.5s operate time
  • 0W (bistable design) hold power
  • ASIL-D compliant sensor position feedback

Applications

  • 400V/800V switchable batteries
  • Vehicle-to-grid
  • Autonomous driving
  • Bistable designs
  • Megawatt charging

Specifications

  • Up to 1000V system voltage
  • >500A to 1000A continuous current range
  • 9V to 16V operating voltage range
  • -40°C to +85°C operating temperature range

Videos

Typical Application Circuit

Application Circuit Diagram - Sensata Technologies HEC High-Efficiency Contactors

Battery Configuration States

Infographic - Sensata Technologies HEC High-Efficiency Contactors
Pubblicato: 2026-02-05 | Aggiornato: 2026-02-05