Description: The STH6 U1 Thermal Protector, part of the ST06 series, provides reliable thermal protection with automatic reset capabilities. Designed to handle power classes from 13.5A to 35A, it features a robust construction with Mylar-Nomex insulation and includes connector cables for easy installation.

Main Parts:

1. Ceramic Cover Plate
2. Stationary Silver Contact
3. Spring Disc
4. Movable Contact
5. Conductive Housing
6. Bimetal Disc

Function:

• Normal Operation: Movable contact is in close contact with stationary silver contact, maintained by spring pressure.
• Over Temperature: At the rated temperature, the bimetal disc deforms, breaking the contact and disconnecting the circuit to protect the device.
• Reset: As temperature drops to the reset point, the bimetal disc and spring disc return to their original positions, reconnecting the circuit.

Product Parameters:

• Nominal Switching Temperature (NST): 60°C - 200°C
• Tolerance: (60-140)°C ±5K, (145-200)°C ±10K
• Reverse Switching Temperature (RST) Tolerance:
  • ≥ 35°C (≤ 130°C NST): -85K ±15K
  • ≥ 135°C ≤ 190°C NST: -90K ±15K
  • ≥ 195°C ≤ 200°C NST: -90K ±15K
• Thickness: >6.8mm
• Diameter: 9.5mm
• Insulation Cap Length: 16mm
• Pressure Resistance: 600N
• Standard Connection: 1.0 mm² / AWG17
• Operating Voltage Range: Up to 500V AC / 28V DC
• Rated Voltage AC: 250V (VDE), 277V (UL)
• Rated Current AC: 13.5A / 10,000 cycles (cos ? = 1.0), 9A / 10,000 cycles (cos ? = 0.6)
• Max. Switching Current AC: 35A / 2,000 cycles
• Rated Voltage DC: 24.0V
• Max. Switching Current DC: 60A / 3,000 cycles
• Insulation Voltage: 2KV
• Total Bounce Time: <1ms
• Contact Resistance: ≤50 mΩ
• Vibration Resistance: 10-60 Hz