Earth Leakage Relay (ELR)

Description

Product Range / Variants

• Electronic Earth Leakage Relays

• Electromechanical Earth Leakage Relays

• Adjustable Sensitivity ELRs

• High-Voltage Earth Leakage Relays

• DIN Rail Mount ELRs

• Panel-Mount Earth Leakage Relays

• Phase-Selective / Universal ELRs

• Combined MCB + ELR Units

Key Features

• Detects leakage current to earth and initiates tripping

• Adjustable sensitivity settings (mA level)

• Fast response to prevent electrical hazards

• Compatible with MCCBs, contactors, and circuit breakers

• Compact and DIN rail or panel mountable

• LED / Indicator for operational status

• Overvoltage and short-circuit protection in some models

• Works with AC, DC, or mixed supply systems depending on design

Technical Specifications

• Rated Voltage: 230V AC, 415V AC (single / three-phase), DC options available

• Rated Current: 5A – 100A (depending on relay type)

• Trip Sensitivity: 10mA – 1000mA (adjustable)

• Trip Time: 0.1s – 1s (model dependent)

• Frequency: 50Hz / 60Hz

• Poles: 1P, 2P, 3P, 4P

• Standards Compliance: IEC 61008, IS 12640, IEC 60947

• Operating Temperature: -10°C to +55°C

• Mounting Type: DIN Rail, Panel Mount

Applications

• Electrical panels and distribution boards

• Residential and commercial installations for human safety

• Industrial machinery and motor protection

• Control panels in automation systems

• Renewable energy systems (solar / wind inverters)

• HVAC, pumps, and compressors

• Substations and switchgear protection

• Safety and monitoring circuits in factories

Benefits

• Protects human life from electric shocks

• Prevents fire hazards caused by leakage currents

• Protects electrical equipment and machinery

• Adjustable sensitivity allows tailored protection

• Compatible with existing breakers and contactors

• Compact, easy to install, and maintenance-friendly

• LED indication or remote signaling for operational status

Material Grades / Build Options

• Housing: Flame-retardant thermoset plastic or ABS

• Contacts: Silver Alloy or Copper Alloy for durability

• Trip Mechanism: Electromechanical or Electronic

• Mounting Options: DIN Rail, Panel Mount

• Sensitivity Settings: Adjustable from 10mA – 1000mA

• Voltage / Current Ratings: Single-phase, Three-phase, AC / DC

• Indicators: LED, Mechanical Flag, or Remote Signal Output

• Standards Compliance: IEC, IS, UL certified