Schneider Electric LRD318 Thermal Overload Relay – 12–18A – TeSys Deca Series – DIN Rail/Plate Mount – Motor Protection Relay for LC1D40A/50A/65A Contactors

The Schneider Electric LRD318 is a 3-pole thermal overload relay from the TeSys Deca series, designed to provide reliable motor protection against overload conditions. It is used in conjunction with LC1D-series contactors to protect three-phase motors from overheating caused by prolonged overloads or phase imbalance, ensuring safe and efficient motor operation in industrial applications.

Electrical Ratings

• Current Setting Range: 12–18 A
• Voltage Rating: up to 600 / 690 V AC
• Phase: 3 Phase
• Poles: 3 Pole (thermal sensing elements)
• Protection Type: Thermal overload protection
• Application Type: Motor protection

Configuration and Function

• Device Type: Thermal Overload Relay
• Series: TeSys Deca
• Primary Function: Motor overload protection
• Reset Function: Manual/automatic reset (configuration dependent)
• Trip Class: Standard industrial thermal response

Compatibility

• Suitable For Use With:
  • LC1D40A contactors
  • LC1D50A contactors
  • LC1D65A contactors
• System Type: Motor starter combination (contactor + overload relay)
• Integration: Direct mounting to LC1D contactor base

Mechanical and Physical Characteristics

• Mounting Type: DIN Rail / Plate Mount
• Terminal Type: Screw clamp terminals
• Dimensions: 4.84 in (L) × 2.17 in (W) × 2.76 in (H)
• Operating Temperature Range: -20 °C to 60 °C
• Compact industrial design for control panel integration
• High mechanical durability for motor starter assemblies

Contacts and Control

• Auxiliary Contacts: 1 NO + 1 NC
• Contact Function: Trip indication and control signaling
• Reset Type: Manual or automatic selectable
• Trip Indication: Mechanical/electrical indication

Standards and Certifications

• IEC / EN / UL / CSA / CCC / EAC compliant
• Marine approvals: DNV-GL, LROS, RMRS
• ATEX certified (INERIS)
• UKCA compliant
• RoHS / REACh compliant
• Manufacturer: Schneider Electric
• MPN: LRD318
• UPC / GTIN: 785901811596

Features

• Adjustable 12–18A thermal overload protection range
• Designed for LC1D40A/50A/65A motor starters
• Protects motors from overload and phase imbalance
• 1NO + 1NC auxiliary contacts for control and signaling
• Compact TeSys Deca modular design
• Direct mounting with Schneider LC1D contactors
• High reliability in industrial motor control systems
• Wide international certification coverage
• DIN rail or plate mounting flexibility
• Long service life for industrial automation applications

Returns are easy

You may return items within 30 days of delivery for a refund.

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