Environmental Control Systems (ECS) operate in high-demand environments such as mobile shelters, defense trailers, and NBC-protected enclosures. These systems demand precise and reliable thermal management. By integrating mechanical bulb and capillary switches, ECS platforms gain accurate thermal cut-in and cut-out control that withstands fluctuating ambient temperatures and supports mission-critical performance.
Explore our bulb and capillary switches for advanced thermal management solutions.
Mechanical Switches in ECS: A Technical Overview
The 358 series auto-reset bulb and capillary thermostats deliver SPDT mechanical switching. Each unit features a fluid-filled sensing bulb connected to an actuator via a capillary tube. As temperature shifts, the fluid expands or contracts. This movement actuates internal contacts to open or close at a specific switching point. Consequently, the switch makes or breaks circuits automatically at a pre-set temperature. This ensures consistent and repeatable performance, even under high-vibration conditions.
Implementation in Split and Mobile ECS Platforms
Rack-mounted split ECS units rely on these thermostats to cycle compressors and protect evaporator coils from freezing. In mobile cart-based ECS systems, the switches automatically manage heating and cooling. This prevents thermal overshoot and eliminates the need for manual resets. Thanks to their compact design and rear-terminal configuration, they integrate easily into space-constrained assemblies and armored control boxes.
Design and Environmental Compatibility
These switches tolerate ambient conditions up to 250 °F. For systems installed in high ambient temperature zones, optional ambient compensation maintains calibration. Additionally, users can choose from multiple bulb materials—including stainless steel and nickel-plated copper—and a range of capillary lengths. This versatility enables flexible routing and simplifies installation in complex ECS enclosures. When paired with R407C refrigerant systems and hermetic scroll-type compressors, these switches maintain stable mechanical control.
Key Performance Enhancements
- Automatic Reset: Restores functionality without manual intervention
- High Cycle Life: Performs up to 100,000 cycles at 15-25 Amps
- Custom Fitment: Adapts to multiple shaft styles, dial rotations, and mounting configurations
Optimized for Tactical and Field-Deployed Systems
ECS platforms require autonomous and highly reliable control solutions. These SPDT mechanical thermostats meet that need. They safeguard against freeze-ups, initiate ventilation, and regulate thermal loads with precision. By leveraging mechanical actuation, ECS systems enhance operational efficiency in mission-critical deployments.
To request OEM pricing or discuss application details, please contact us.
