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  • Thermal Overload Relay ls
  • ls Thermal Overload Relay
1 8

electrical center b2c

LS MT-32 Thermal Overload Relay (12-40A)

$26.75 USD
$26.75 USD
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Shipping calculated at checkout.
Model NO.

LS MT-32/3H Thermal Overload Relay, 12-40A Adjustable Current, Compatible with LS MC-9~MC-40 Contactors

1. 核心概述 (Overview)


The LS Electric MT-32/3H Thermal Overload Relay is a compact, precision-engineered protective device designed to work seamlessly with LS MC series contactors (MC-9 to MC-40) to provide reliable overload and phase-loss protection for small-to-medium three-phase induction motors. With adjustable current ranges spanning 12A to 40A, this relay allows accurate calibration to match motor nameplate currents, preventing overheating and burnout caused by overloads, unbalanced phases, or locked-rotor conditions. It is an essential component for safe, long-lasting motor control circuits in industrial, commercial, and automation applications.

2. 关键特性 (Key Features)


  • Multi-Range Calibration: Five adjustable current options to suit diverse motor ratings: 12-18A, 16-22A, 18-25A, 22-32A, and 28-40A, ensuring precise matching to motor specifications.
  • Seamless Compatibility: Specifically designed to pair with LS MC-9/12/18/25/32/40 contactors, enabling direct, space-saving mounting without additional wiring adapters.
  • Dual Protection Mechanisms: Combines thermal bimetallic elements (for overload protection) with phase-loss/unbalance detection, providing comprehensive protection against common motor faults.
  • Dual Reset Functionality: Supports both manual reset (for safety-critical applications requiring human intervention) and automatic reset (for continuous, low-risk processes), adapting to diverse operational needs.
  • IEC/GB Certified: Compliant with IEC 60947-4-1 and GB 14048.4 standards, meeting global safety and performance benchmarks with CE/CCC certifications.
  • Clear Visual Trip Indicator: A prominent trip status marker allows quick fault diagnosis, minimizing downtime during maintenance and troubleshooting.
  • Compact & Durable Build: High-grade flame-retardant housing and vibration-resistant internal components ensure reliable performance in harsh industrial environments, with resistance to heat, dust, and mechanical stress.

3. 型号解析 (Model Decoding)


表格
Model Code Core Interpretation
MT-32/3H LS Electric Thermal Overload Relay, rated frame 32A, 3-phase configuration
12-18A / 16-22A / 18-25A / 22-32A / 28-40A Adjustable current setting range for motor overload protection
Compatible Contactors LS MC-9/12/18/25/32/40 series contactors

4. 典型应用 (Applications)

  • Small-to-medium three-phase motor control (pumps, fans, compressors, conveyors)
  • Machine tools, packaging machinery, and automation equipment
  • HVAC systems (air conditioning units, blowers, ventilation systems)
  • Commercial building power distribution and equipment control
  • Water treatment plants and agricultural machinery

DATA SHEET

Attribute Value
Brand LS Electric / LS 产电
Series MT-32 Series Thermal Overload Relay
Product Type Thermal Overload Relay
Model MT-32/3H
Adjustable Current Ranges 12-18A, 16-22A, 18-25A, 22-32A, 28-40A
Compatible Contactors LS MC-9/12/18/25/32/40 series contactors
Protection Functions Overload Protection, Phase Loss/Unbalance Protection
Reset Type Manual / Automatic (Adjustable)
Mounting Type DIN Rail / Direct Mount to Contactors
Standards Compliance IEC 60947-4-1, GB 14048.4, EN 60947-4-1
Certifications CE, CCC, RoHS
Application 3-Phase Motor Protection, Industrial Automation, HVAC, Pump & Fan Control, Machine Tools

Care Instructions

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