Square D LC1D-50B7 TeSys Deca IEC Contactor, 3-Pole, 50A

Square D LC1D-50B7 TeSys Deca IEC Contactor, 3-Pole, 50A

The Square D TeSys Deca contactor (device short name LC1D) is a 3-pole (3 NO), non-reversing IEC contactor built for motor control applications up to 50A at 690V AC-3/3e (22kW@400V), with a rated operational current of 50A (at <60°C) at ≤440V AC for the power circuit. This contactor is available with a 24V AC, 24V DC, or 120V AC 50/60Hz control circuit coil, and is rated for up to 100kA SCCR at 40HP, 480VAC, making it suitable for building motor starters across a wide range of commercial and industrial applications.

Key Features

• Pole Configuration: 3-pole contactor with 3 NO contacts (Pole Contact Composition: 3 NO) for reliable motor circuit switching.
• Control Circuit Coil Options: Available with 24V AC, 24V DC, or 120V AC 50/60Hz coils, allowing the same 3-pole/50A contactor platform to match a range of control-power schemes.
• Rated Operational Current: Ie 50A (at <60°C) at ≤440V AC AC-3e for the power circuit, supporting motor loads up to 30kW at 440V AC 50Hz (AC-3).
• Thermal Current: Ith conventional free-air thermal current of 80A (at 60°C) for the power circuit and 10A (at 60°C) for the control circuit.
• Insulation Voltage: Ui rated at 600V UL/CSA for the power circuit and 690V per IEC 60947-1 for the control circuit.
• Degree of Protection: IP2X per IEC 60529 and VDE 0106.
• Mechanical Durability: B10d = 1,369,863 cycles at nominal load per EN/ISO 13849-1, with operating rates up to 3,600 cycles/hour at 60°C.
• Terminal Connections: Screw clamp terminals for the control circuit (1-1.4 mm²) and screw terminals for the power circuit, tightened to 5 N.m.

Certifications & Compliance

• UL Listed (UL 60947-4-1)
• Conforms to IEC 60947-4-1, IEC 60947-5-1, and EN 60947-5-1
• DNV, CCC, UKCA, BV, RINA, GOST, GL, and Lloyds Register of Shipping (LROS) certified
• V1 Flame Retardance conforming to UL 94
• RoHS Exemption Information: Yes

Technical Specifications

• Amperage Rating: 50A
• Poles Description: 3P
• Warranty Period: 18 months
• Toxic Heavy Metal Free: Yes
• Mercury Free: Yes
• Sustainable Packaging: Yes
• Average Life Duration: 20 year(s)
• ROHS Eur Status: Compliant

Typical Applications

• Motor Starter Assemblies for 3-Phase Motors
• Commercial and Industrial Motor Control Panels
• Panelboard and Control Panel Wiring
• OEM Machine Building and Control Panel Fabrication
• Renovation and New Motor Control Installations

Why Square D?

Square D TeSys Deca contactors are engineered to IEC 60947-4-1 and UL 60947-4-1 standards, delivering code-compliant performance backed by an 18-month warranty and independent certifications including UL, DNV, and BV. With mercury-free, toxic-heavy-metal-free construction, sustainable recycled-content packaging, and a choice of 24V AC, 24V DC, or 120V AC coil options on the same 3-pole, 50A platform, this contactor is built for dependable, long-service motor control in demanding commercial and industrial environments.