Thermal Overload Relay – 37–50A

1. Product Overview

Thermal Overload Relay – 37–50A is a precision motor-protection device designed to safeguard three-phase and industrial electric motors against overload and phase-failure conditions. It is widely used in motor starters, contactor assemblies, pumps, compressors, conveyors, fans, and automated industrial equipment. Its adjustable 37–50A current range enables accurate protection settings for different motor operating loads, helping reduce overheating, equipment damage, and unplanned downtime. For industrial buyers, it provides a cost-effective and dependable solution for improving motor safety, operational continuity, and maintenance efficiency.

2. Key Specifications & Technical Characteristics

• Product Type: Thermal Overload Relay
• Adjustable Current Range: 37–50A
• Primary Function: Motor overload and phase-failure protection
• Operating Principle: Thermal bimetallic overload protection
• Material Components: Heat-resistant engineering plastics, copper-based electrical terminals, conductive alloys, and bimetallic thermal elements
• Electrical Application: Industrial AC motor protection and motor-control circuits
• Mounting: Designed for integration with compatible magnetic contactors and motor starters
• Physical Characteristics: Compact industrial construction with robust insulated housing
• Protection Features: Adjustable overload setting, manual/automatic reset options depending on configuration, and phase-loss protection
• Packaging Options: Individual protective packaging, cartons, and bulk industrial packaging
• Documentation: Technical specifications, installation information, and compliance documentation available subject to model and supply configuration

3. Core Industrial Applications

• Manufacturing: Protects motors powering production machinery, conveyors, mixers, and processing equipment.
• Water & Wastewater: Suitable for pumps, filtration systems, treatment equipment, and water-handling machinery.
• HVAC & Building Services: Used for compressors, ventilation fans, pumps, and other motor-driven systems.
• Mining & Heavy Industry: Supports reliable protection of motors operating conveyors, crushers, pumps, and auxiliary machinery.
• Agriculture: Suitable for irrigation pumps, grain-handling systems, ventilation equipment, and agricultural processing machinery.
• Commercial & Industrial Automation: Integrates into motor-control panels and automated equipment requiring dependable overload protection.

The relay provides more precise and economical motor protection than relying solely on conventional circuit protection, helping minimize thermal damage, maintenance costs, and production interruptions.

4. Competitive Advantages

• Quality Consistency: Manufactured for stable thermal response and dependable motor protection under demanding operating conditions.
• Supply Reliability: Suitable for recurring industrial procurement and project-based requirements.
• Logistics Capability: Available for bulk export supply with commercial packaging designed for efficient handling and international transportation.
• Price Competitiveness: Provides practical motor protection without the higher cost associated with replacing damaged motors and control equipment.
• Operational Efficiency: Adjustable 37–50A protection range allows buyers to match settings more closely to motor operating requirements.
• Durability: Robust construction supports continuous use in industrial motor-control environments.
• Technical Support: Product specifications, compatibility information, and relevant technical documentation can be provided for procurement and installation requirements.
• Strategic Sourcing Value: A dependable component for standardizing motor-protection systems across industrial facilities and maintenance programs.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT
• Loading Capacity: Dependent on packaging configuration, product dimensions, and container specifications; final loading capacity confirmed at quotation stage.