120A Magnetic Latching Relay | TL919 High Current Relay

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Short Description

  • Type: DC Latching Relay
  • Current Rating: 120A
  • Coil Voltage Options: 6V, 9V, 12V, 24V DC
  • Contact Form: Normally Open (with auxiliary contact option)
  • Max Switching Voltage: 440VAC
  • Contact Resistance: ≤1mΩ
  • Operate/Release Time: ≤20ms
  • Insulation Resistance: ≥1,000MΩ (DC500V)
  • Lifespan: 300,000 mechanical operations

Product Introduction

The TL919-120A is a high-performance 120A magnetic latching relay designed for demanding electrical applications. With its impressive 120 amp relay capacity and 24 volt DC latching relay operation, this robust component delivers reliable switching for high-current circuits. The relay features a maximum switching voltage of 440VAC and can handle loads up to 37,500VA, making it ideal for power distribution systems.This high current latching relay incorporates advanced magnetic arc extinguishing technology and offers exceptional impact resistance (100G minimum). Its energy-efficient pulse drive operation (50ms pulse width) ensures low power consumption while maintaining reliable performance. The compact design (47.1mm × 34.5mm × 22.45mm) houses durable contacts with a maximum contact resistance of just 1mΩ.Common applications for this 120A magnetic latching relay include power distribution units (PDUs), smart energy meters, industrial automation systems, and electric vehicle charging equipment. With an operational temperature range of -40°C to +70°C and compliance with IEC62055-31 UC3 standards, the TL919-120A delivers dependable performance in challenging environments while meeting RoHS environmental requirements.

120A magnetic latching relay used on PDU 120A magnetic latching relay for EV charger

Key Features

  • High Current Capacity – 120A contact segmentation capability
  • Energy Efficient – Pulse drive operation with low power consumption
  • Durable Construction – Strong impact resistance (100G minimum) and high reliability
  • Advanced Technology – Magnetic arc extinguishing for safer operation
  • Flexible Configuration – Available in single coil and double coil versions
  • High Voltage Isolation – 4kV withstand voltage between contact and coil
  • Environmental Compliance – RoHS compliant and environmentally friendly
  • Wide Temperature Range – Operates from -40°C to +70°C
  • Long Service Life – 300,000 operations at 120A 250VAC

Technical Specifications

Parameter Specification
Model TL919-120
Rated Load 120A 250VAC
Maximum Switching Current 120A
Maximum Switching Voltage 440VAC
Maximum Switching Power 37,500VA
Contact Resistance 1mΩ Max
Operate/Release Time 20ms Max
Insulation Resistance 1,000MΩ Min (DC500V)
Dielectric Strength AC2,000V/1min (contact-contact)
AC4,000V/1min (contact-coil)
Mechanical Life 300,000 operations
Electrical Life 120A 250VAC: 3,000 ops
120A 60VDC: 1,000 ops
100A 250VAC: 10,000 ops
Ambient Temperature -40°C to +70°C
Humidity 5% to 85% RH
Dimensions 47.1mm × 34.5mm × 22.45mm
Weight Approx. 80g
Certifications IEC62055-31 UC3, RoHS

Quick Specifications

  • Current Rating: 120A
  • Voltage Rating: 250VAC (440VAC max)
  • Coil Voltage: 6/9/12/24VDC options
  • Contact Form: Normally open (with auxiliary contact option)
  • Contact Material: Silver alloy
  • Operate Time: ≤20ms
  • Release Time: ≤20ms
  • Insulation: 4kV contact to coil
  • Lifespan: 300,000 mechanical operations

Typical Applications

The 120A magnetic latching relay is widely used in:

  • Power Distribution Units (PDUs) – For load switching and circuit protection
  • Smart Energy Meters – Prepaid and postpaid electricity metering systems
  • Industrial Automation – Control of heavy machinery and equipment
  • Electric Vehicle Charging – DC charging station components
  • Renewable Energy Systems – Solar and wind power distribution
  • Telecommunications – Power backup and distribution systems
  • Building Automation – Centralized power control systems
  • Transportation Systems – Railway and marine power distribution

Why Choose Our 120A Magnetic Latching Relay?

Manufactured by Mingni Tech, a certified company (ISO9001, ISO/TS16949, ISO14001, OHSAS18001, IECQ QC 080000), the TL919-120A relay combines high-current handling capacity with energy-efficient operation. Its magnetic latching design ensures stable state retention without continuous power consumption, while the robust construction guarantees reliable performance even in harsh environments.

 

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