5003 Series – Low-profile 1/2″ disc

The Airpax™ 5003 series is a RoHS-compliant, sub-miniature, positive snap-action bimetallic thermostat designed for accurate thermal sensing and control. It is a single-pole, single-throw (SPST) device available in both “open on rise” and “close on rise” configurations. The thermostat features a compact 1/2” disc design, making it ideal for applications where space is limited.

Key Features

• Low Profile Design: The overall depth, excluding terminals, is only 0.250 inches.
• Gold-Plated Contact Options: Ensures reliable low-current switching.
• RoHS Compliant: Meets EU directive 2002/95/EC.
• High Durability: Shock and vibration-resistant construction.
• Sealed Options Available: Resin-sealed variants for high-humidity and contaminating atmospheres.
• Wide Temperature Range: Operates from +35°F to +325°F (+1.67°C to 162.78°C).
• Multiple Terminal and Mounting Options: Provides flexibility for integration into diverse applications.

Electrical and Thermal Specifications

• Contact Ratings:
  • 120 VAC, 5.0 A (resistive load) for 100,000 cycles.
  • 240 VAC, 24 VDC, 3.0 A for 100,000 cycles.
  • 48 VDC, 1.5 A for 100,000 cycles.
• Operating Temperature Range: +35°F to +325°F (+1.67°C to 162.78°C).
• Temperature Tolerance: Standard ±5°F with 5°F increments.
• Long-Term Exposure Limit: -40°F to 350°F (-40°C to 176.67°C).
• Dielectric Strength: 1500 VRMS, 60Hz, 1-minute terminals to case.
• Weight: Approximately 2.3 grams (0.08 oz).
• Contact Bounce: Maximum 3 milliseconds.
• Insulation Resistance: 100 MΩ at 500 VDC.

Construction and Materials

• Terminal Material: Multiple terminal options available for various mounting needs.
• Sealed for Protection: Non-volatile resin-sealed versions for contamination resistance.
• Thermal Response: Fast activation due to low mass and direct thermal coupling.
• Mechanical Life: Over 1,000,000 operations under specified conditions.
• Material Composition:
  • Base Material: High-grade thermoplastic with high-temperature resistance.
  • Terminal Material: Copper alloy with tin or gold plating for enhanced conductivity.
  • Contact Material: Silver alloy or gold-plated contacts for extended lifespan.

Applications

The Airpax 5003 series thermostats are widely used in temperature-sensitive applications, such as:

• HVAC Systems: Temperature monitoring and safety control.
• Medical Equipment: Ensuring operational temperature safety.
• Industrial Electronics: Overheat protection in electrical devices.
• Consumer Appliances: Used in coffee makers, water heaters, and refrigeration units.
• Automotive Systems: Over-temperature protection in power electronics.
• Aerospace and Defense: Precision temperature regulation in mission-critical environments.
• Battery Management Systems (BMS): Thermal control for lithium-ion battery safety.

Operational Configurations

The 5003 series thermostats are available in two configurations:

1. Open on Rise (O): Breaks the circuit when temperature rises above a preset threshold.
2. Close on Rise (C): Makes contact when temperature reaches the setpoint, ideal for heating applications.

Ordering Information

Each thermostat is assigned a unique part number based on its configuration:

• Contact Operation:
  • “O” = Open on rise (temperature limit switch).
  • “C” = Close on rise (temperature activation switch).
• Terminal Selection: Multiple standard and custom terminal options available.
• Mounting and Enclosure Selection: Various mounting configurations for easy integration.
• Operating Temperature Range: Configurable from 35°F to 325°F with standard increments.
• Lead Wire Options: Different insulation materials for specific temperature ranges.
  • Up to 220°F: PVC insulated wire.
  • 221°F to 350°F: Teflon-insulated wire for high-temperature applications.

Example:

• C53GAB105A-090Y
  • Close on rise operation.
  • 5003 series with 0.25” horizontal quick-connect terminals.
  • Opposed terminal orientation.
  • 0.140” two-hole mounting bracket.
  • 105°F top temperature with ±5°F tolerance.
  • Bottom temperature set at 90°F with a reset margin.
  • Gold-plated contacts for improved durability in low-current applications.

Conclusion

The Airpax 5003 series thermostats offer a compact, reliable, and durable solution for thermal management. Their robust construction, wide temperature range, and multiple terminal options make them suitable for demanding applications in industrial, medical, automotive, and consumer electronics. With industry-leading specifications and customization options, the 5003 series provides the flexibility needed for advanced thermal protection solutions.

AMIRONIC – Your Trusted Airpax Distributor in Israel AMIRONIC is the official distributor of Airpax products in Israel, offering technical expertise and top-quality components tailored to your needs. Contact us today for more information or to place an order.