Siemens Sentron Switch disconnector 3LD, main switch, 3-pole, 250A, 132kW Part number 3LD2418-0TK11

Product Overview

The Siemens 3LD2418-0TK11 is a 3-pole switch-disconnector from the SENTRON 3LD series (main switch design). It is rated for a continuous current of 250 A and supports high operational power, designed for floor-mounting with door coupling and a black knob-operated selector mechanism.

Key Features

• 3-pole switch disconnector (main switch) designed for low-voltage distribution systems
• Rated continuous current Iu = 250 A
• High operational power: AC-23A duty at 400 V up to 132 kW, AC-3 duty at 400 V up to 110 kW
• Rated insulation voltage Ui = 690 V; surge voltage resistance = 8 kV
• Protection class IP65 on front, suitable for demanding environments
• Lockable in OFF position, suitable for maintenance and safe-isolation applications
• 4-hole front mounting type; knob-operated selector switch mechanism in black

Technical Specifications

• Product Series: SENTRON 3LD Switch-Disconnectors
• Article Number: 3LD2418-0TK11
• Number of Poles: 3
• Rated Continuous Current (Iu): 250 A
• Rated Insulation Voltage (Ui): 690 V
• Rated Operating Power (AC-23A, 400 V): 132 kW
• Rated Operating Power (AC-3, 400 V): 110 kW
• Mechanical Service Life (Typical): 100,000 operations
• Electrical Endurance (Typical): 6,000 operations at AC-23A, 690 V
• Dimensions (H × W × D): 169 mm × 112 mm × 94 mm
• Net Weight (Approx.): 2.7 kg

Compliance & Certifications

• Complies with IEC/EN 60947-3 and other relevant standards for switch-disconnectors
• Manufactured under Siemens SENTRON quality and safety standards

Applications

The Siemens 3LD2418-0TK11 is ideal for use as a main service switch, safety isolation switch or maintenance switch in industrial power distribution, large machinery, and switchboard installations. Its high current rating, excellent protection class and locking capability make it suitable for demanding environments requiring clear disconnection and safe maintenance.