Dongguan Ampfort Electronics Co., Ltd.
                                                                                                           
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12 Years
Since 2014
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Electrical Equipment & Supplies Switches Temperature Controlled Switch(TDS)

Thermik S01 Bimetallic Thermal Switch Protector 250V 3A 140°C 40mm Snap Action Thermostat

Price Negotiable
Price: 0.8~1.2 USD/PC
MOQ: 1000 Pieces
Delivery Time: 2 Weeks
Brand: AMPFORT
Product Description
Product Overview

The Thermik S01 Cross Button Type Snap Action Thermal Protector is a precision bimetallic thermostat designed for reliable overheating protection in electrical applications. With ratings of 250V AC 3A and operating temperature of 140±5°C, this 40mm device provides rapid circuit interruption when temperature thresholds are exceeded.

Key Features
  • Compact 40mm size for easy mounting in space-constrained applications
  • Snap-action bimetallic mechanism for rapid response to temperature changes
  • Normally closed contacts with automatic reset functionality
  • Precise temperature control with ±5°C operating tolerance
  • High-quality materials including silver-plated iron case and premium bimetallic components
  • Comprehensive safety certifications including UL, CUL, TUV, and VDE
  • Compliant with European ROHS and REACH environmental standards
Technical Specifications
Parameter Specification
Electrical Ratings 250V AC: 3A
125V AC: 6A
24V DC: 6A
Contact Resistance <30mΩ
Dielectric Strength 2KV
Operating Temperature 140±5°C
Reset Temperature 100±15°C
Connection Type Riveting wire with 40mm cables
Agency Approvals CQC, UL, CUL, TUV, VDE
Applications

This thermal protector is ideal for various motor and electrical equipment applications including:

  • Air conditioner plastic package motors
  • Washing machine and range hood motors
  • Series pole motors and fan motors
  • Transformers and coils
  • Rechargeable batteries and automotive DC motors
  • Electric heaters and water pump motors
  • Graphene heating pads and curtain motors
Construction & Operation

The S01 thermal protector features a self-aligning design with conductive housing, insulated contact cap, and spring snap-in disc mechanism. The bimetallic disc responds directly to ambient temperature, snapping to open contacts when the rated switching temperature is reached and automatically resetting when temperatures decrease.

Quality Assurance

Manufactured under ISO9001:2008 quality systems with TS16949 implementation for automotive applications. The device offers life cycles ranging from 10,000 to 100,000 cycles depending on model and working conditions, with a guaranteed defective rate of 100 ppm.

Customization Options

Custom thermal protectors are available with specific voltage/current ratings, action temperatures, dimensional requirements, and application-specific parameters.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Dongguan Ampfort Electronics Co., Ltd.
Location Floor 5,Changlong Industrial Building,No.6,Jiangnan Road,Jingshan,Chashan Town,Dongguan 523323,China
Contact Person Annie Fang

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