Thermal Overload Relay

The Thermal Overload Relay produced by Yijia Industrial Electrical Co., Ltd. serves as a critical protective component, typically utilized as an accessory for an AC contactor . This device is engineered to protect electric motors and power circuits from overheating caused by prolonged overloads or phase failures. By incorporating temperature compensation and a high-sensitivity bimetallic strip mechanism, the relay ensures stable performance across various industrial environments.

Technical Specifications

The following table outlines the standard technical parameters for the Thermal Overload Relay series.

Core Functional Values

The primary function of the Thermal Overload Relay is to monitor current flow and interrupt the circuit when current exceeds the preset limit for a specific duration. Key functional benefits include:

• Adjustable Current Setting: Users can calibrate the precise current required for specific machinery requirements.
• Dual Reset Options: Offers flexibility with both manual and automatic reset functions to suit different safety protocols.
• High Current Capacity: The use of silver alloy contacts allows for durable operation and long service life.
• Compact Integration: Designed to mount directly or alongside an AC contactor to save space in control cabinets.

Manufacturing and Quality Advantages

Yijia Industrial Electrical Co., Ltd. operates under the ISO9001 international quality management system. Our production facility utilizes advanced equipment to ensure that every push button switch, signal lamp, and relay meets strict international standards.

1. Material Integrity: We use high-quality, flame-retardant plastics and precision bimetallic strips for our Thermal Overload Relay units.
2. Certified Compliance: All products, including the metal signal lights and plastic push button switch, have received CCC, CE, and RoHS certifications.
3. R&D Capability: We offer OEM/ODM support for specialized industrial controls, ensuring that our signal lamp and switch designs align with client-specific dimensions and electrical loads.

Applications in Industrial Control

Our product range is widely integrated into:

• Distribution Boxes: Ensuring circuit safety and preventing motor burnout.
• Control Cabinets: Managing complex power distribution for manufacturing lines.
• Instrument Boxes: Providing clear status indication via signal lamp and reliable manual control through push button switch interfaces.

Addressing Buyer Concerns

When sourcing industrial electrical components, procurement professionals often have specific concerns regarding compatibility and durability.

• Durability: Our Thermal Overload Relay uses silver-alloy contact points to minimize wear during high-current operations.
• Compatibility: Designed to fit standard AC contactor models, ensuring easy replacement and installation.
• Technical Support: We provide detailed selection guides for our metal push button switch and signal lamp series to ensure the voltage, material, and operation mode match your local requirements.

Service and Procurement Process

We maintain a transparent service flow to ensure efficiency from inquiry to after-sales.

1. Pre-sales Consultation: Our team assists in selecting the correct Thermal Overload Relay or push button switch based on your specific load (A), installation dimensions (mm), and operation mode (Momentary/Latching).
2. Quality Assurance: Every batch undergoes rigorous testing to comply with CE and CCC standards before shipment.
3. After-sales Support: We provide technical guidance on installation and adjustment of current settings for all relays and AC contactor products.

Frequently Asked Questions

How do I choose the right current range for my relay?

You should select a Thermal Overload Relay where the motor's rated current falls within the middle of the relay's adjustable range.

Are your push buttons customizable?

Yes, Yijia Industrial Electrical Co., Ltd. offers customization for the metal push button switch , including LED color, voltage (e.g., DC 24V), and custom symbols or socket requirements.

What is the lead time for AC contactor orders?

Lead times vary by order volume, but our modern management system ensures consistent stock for standard models of relays and signal lamp products.

Features & Benefits

● Adjustable current setting

● Prevent overloads or phase failures

● Automatic or manual reset

● Auxiliary contacts

● Test button

● Stop button

● Compact design

● High-quality plastic

● CCC,CE

● Support to button switch OEM/ODM

● Offer quality and low price product

How to select the appropriate type of metal push button

Please answer the following question, and send it to us, we will select the appropriate type for you.

Question&Example

①　the dimensions of push button to install: 16mm.

②　the load current you need to control: 5A.

③　the type of head part: plat head without light.

④　choose the contact structure: 1NO1NC/2NO2NC

⑤　Operation mode: Momentary or Latching.

⑥　LED volt and color(if need led): DC 24V GREEN.

⑦　choose the materials of shell: Stainless steel or Brass clad chromium.

⑧　special request: waterproof, Custom symbol, need socket...