Thermal Switch – Military Grade

High-Reliability Thermal Switches by Amironic: Advanced Solutions for Industrial and Military Applications

Introduction

Amironic is proud to distribute high-reliability (Hi-REL) thermal switches from our sister company, Control Products Inc. (CPI), in Israel. These thermal switches are designed to meet the stringent demands of industrial, aerospace, and military applications, ensuring precision control and safety in extreme environments. With programmable setpoints up to 954°C and a variety of configurations available, CPI’s thermal switches provide industry-leading reliability and performance.

What is a Thermal Switch?

A thermal switch is an electromechanical device that controls an electrical circuit based on temperature thresholds. When the surrounding temperature reaches a predetermined setpoint, the switch either opens or closes the circuit, allowing it to activate or deactivate connected devices such as heaters, fans, or alarms. These switches are available in single-pole double-throw (SPDT) variations and are engineered to function accurately under extreme conditions.

Applications of Thermal Switches

CPI’s thermal switches are widely used in diverse industries, including:

• Aerospace & Military: Ensuring operational safety in aircraft, military vehicles, and defense systems.
• Industrial Equipment: Temperature control in manufacturing processes and heavy machinery.
• Medical Devices: Precise temperature regulation for critical medical equipment.
• Hydraulic & Turbine Systems: Maintaining optimal performance and preventing overheating.
• Automotive & Transportation: Thermal management in engines, battery packs, and cooling systems.

These switches serve three primary functions:

1. Overheating Indication: Provides an early warning when temperatures approach unsafe levels.
2. Temperature Control: Maintains systems within a predefined temperature range, preventing excessive heating or freezing.
3. Safety Shutoff: Automatically disconnects power in response to critical temperature readings, enhancing operational safety.

Compliance with RTCA DO-160C Qualification Standards

CPI’s thermal switches have undergone rigorous testing in accordance with RTCA DO-160C, a recognized standard for environmental conditions and test procedures in airborne equipment. The qualification summary includes tests simulating the toughest environmental conditions, ensuring that these switches operate reliably in the harshest applications.

Types of CPI Thermal Switches

CPI offers three main categories of thermal switches, each designed for specific sensitivity and temperature range requirements:

1. Snap Stat Thermal Switches

• Temperature Range: 0°F to 300°F (-17.8°C to 148°C)
• Operation: Utilizes a bimetallic snap disc for reliable contact movement, offering shock and vibration immunity.
• Configuration Options:
  • Surface Mount
  • Flange Mount with Probe
  • Thread Mount
  • Hermetically Sealed
  • Clamp Mount
  • High Dielectric Strength

2. Plug Stat Thermal Switches

• Temperature Range: 0°F to 650°F (-17.8°C to 343°C)
• Operation: Uses metals with different expansion rates for precise temperature sensing with a small differential.
• Configuration Options:
  • M1 Series – Solder Terminals
  • M2 Series – Glass-Sealed Connectors
  • L Series – Ground-to-Case
  • S Series – Dual-Setpoint

3. Rod and Tube Thermal Switches

• Temperature Range: 0°F to 1750°F (-18.3°C to 954°C)
• Operation: Relies on differential expansion rates of internal rod and outer tube materials for fast response times.
• Configuration Options:
  • X1 Series – 0°F to 850°F
  • X2 Series – 850°F to 1750°F
  • AB Series – SPDT
  • W Series – Ground-to-Case

Advantages of CPI Thermal Switches

CPI thermal switches offer multiple advantages, making them a preferred choice in high-reliability applications:

• Compact and Lightweight: Ideal for space-constrained environments.
• Cost-Effective: Affordable compared to alternative temperature control solutions.
• Simple Installation: Requires no additional power source, reducing setup complexity.
• Low Maintenance: Designed for long service life with easy functionality checks.
• Customizable: OEM-specific designs are available to meet unique application requirements.

Conclusion

Amironic is committed to providing state-of-the-art thermal switches in Israel, ensuring precise temperature control and unmatched reliability in critical applications. Whether for aerospace, military, or industrial use, CPI’s Hi-REL thermal switches deliver superior performance and safety.

For inquiries and more details, contact Amironic today to find the ideal thermal switch solution for your needs.