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Changsheng – Leading Manufacturer of
Motor Thermal Protection Switches

For 19 years, we’ve delivered reliable thermal protectors, thermostats, and thermal fuses for motors, appliances, and industrial systems.

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About Changsheng

For 19 years, Changsheng has been devoted to the design and production of circuit breakers for equipment protection. Our mission is to provide innovative and reliable solutions for even the most demanding challenges in circuit overcurrent and thermal protection.

We specialize in manufacturing thermal overload relays for motors, air conditioners, batteries, dryers, washing machines, automobiles, and nearly any electric instrument our clients require.

  • 19 Years of Industry Leadership
  • ISO-Certified Manufacturing
  • Global Distribution Network
  • Advanced Quality Control Systems
Thermal Protector Manufacturing

Our Main Products

High-performance thermal protection solutions for motors, appliances, and industrial systems. Engineered for safety, reliability, and long life.

17AM-D Motor Thermal Protection Switch

17AM-D Motor Thermal Protection Switch

Compact and reliable thermal protector designed for motor overload protection in appliances and industrial equipment.

  • • Operating Temp Range: 50°C – 150°C
  • • Reset Type: Manual or Automatic
  • • Contact Rating: 10A at 250VAC
  • • Applications: Motors, Transformers, Power Supplies
17AM-D-Z Motor Thermal Protection Switch

17AM-D-Z Motor Thermal Protection Switch

Enhanced version with zinc case for improved heat dissipation and durability in high-temperature environments.

  • • Zinc Alloy Housing
  • • Fast Thermal Response
  • • High Vibration Resistance
  • • Ideal for Automotive & HVAC Systems
15AM-D Motor Thermal Protection Switch

15AM-D Motor Thermal Protection Switch

Miniature thermal protector for small motors and electronic devices requiring space-saving protection.

  • • Compact Size: 15mm Diameter
  • • Low Trip Tolerance
  • • Long Cycle Life (>10,000 operations)
  • • RoHS Compliant
BR-B2D Motor Thermal Protection Switch

BR-B2D Motor Thermal Protection Switch

High-capacity bimetallic protector for heavy-duty motors and industrial machinery.

  • • High Current Rating: Up to 16A
  • • Wide Temperature Range
  • • Hermetically Sealed
  • • Suitable for Harsh Environments
Bimetal Disc Thermostat

Bimetal Disc Thermostat

Snap-action thermostat using bimetal disc technology for precise temperature control and cut-off.

  • • Fast Actuation Time
  • • Adjustable or Fixed Set Points
  • • Used in Heaters, Ovens, Dryers
  • • Long-Term Stability
CSRY01 Thermal Fuse

CSRY01 Thermal Fuse

One-time use thermal fuse that permanently breaks the circuit at a specific temperature to prevent overheating.

  • • Non-Restorable Safety Device
  • • Melting Alloy Technology
  • • Operating Range: 70°C – 240°C
  • • UL, CSA, VDE Certified
Thermal Overload Relay

Thermal Overload Relay

Electromechanical device that protects motors from excessive current by monitoring heat buildup over time.

  • • Adjustable Trip Settings
  • • Phase Loss Protection
  • • DIN Rail Mountable
  • • Used in Industrial Control Panels
Motor Protection Thermostat

Motor Protection Thermostat

Integrated thermostat solution for permanent attachment to motor windings or housing.

  • • Epoxy-Sealed for Moisture Resistance
  • • High Dielectric Strength
  • • Customizable Leads & Connectors
  • • OEM Solutions Available

Why Choose ElectricProtector?

Our commitment to quality, innovation, and customer service sets us apart in the thermal protection industry.

Certified Quality

ISO-certified processes and rigorous testing ensure every product meets international safety standards.

Fast Response

Advanced bimetallic and thermal fuse technologies deliver rapid protection against overheating.

Global Support

Distributed worldwide with technical support and custom design services for OEMs.

19+ Years Experience

Decades of engineering expertise in thermal protection for motors and electrical systems.

19+
Years in Business
50+
Countries Served
10M+
Units Shipped Annually
100%
Quality Tested

Frequently Asked Questions

Find answers to common inquiries about our thermal protection products.

What is a thermal protector?

A thermal protector is a safety device that automatically disconnects a circuit when excessive heat is detected, preventing damage to motors, transformers, and other electrical components.

How does a bimetallic thermal switch work?

It uses two metals with different expansion rates bonded together. When heated, the strip bends and opens the electrical contacts, breaking the circuit until it cools and resets.

What's the difference between a thermal fuse and a thermal switch?

A thermal fuse is a one-time-use device that permanently breaks the circuit. A thermal switch can reset automatically or manually after cooling down.

Can you customize thermal protectors for OEM applications?

Yes, we offer full customization including temperature ratings, housing materials, lead wires, and mounting options for OEM clients.

Are your products certified?

Yes, our thermal protectors meet international standards including UL, CSA, VDE, and RoHS. We provide full certification documentation upon request.

Contact Us

For inquiries, quotes, or technical support, please reach out through the official website.

Phone: +86-519-85920008

Company: Jiangsu Changsheng Electric Appliance Co., Ltd.

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