SIEMENS SIRIUS 3LD3 16A 3-Pole Main Switch / Disconnect Switch 3LD30540TK53

Rated at 16 A and built for 690 V insulation, the SIEMENS 3LD3054-0TK53 main switch delivers dependable load-breaking in a compact 3-pole design. Its red/yellow emergency-stop actuator provides clear, immediate control.

Overview

The 3LD3054-0TK53 is a 3-pole main and emergency-stop switch from the SIRIUS 3LD3 series. It handles rated operational currents up to 16 A and AC-23A loads up to 5.5 kW at 400 V. Front mounting with a single 1-hole cutout simplifies installation.

What stands out

• Rated insulation voltage 690 V and impulse withstand 6 kV
• IP65 front protection for demanding environments
• Rotary knob actuator in red/yellow for emergency stop
• 1 NO + 1 NC auxiliary contacts for status feedback
• 100,000 mechanical and electrical switching cycles

Technical details

• Rated operational current (Iu): 16 A
• Rated operational power (AC-23A, 400 V): 5.5 kW
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Degree of protection (front): IP65
• Mounting: front mounting, 1-hole
• Connection: screw terminals
• Short-circuit current rating (Icw): 0.3 kA (1 s)
• Short-circuit making capacity (Icm): 0.6 kA
• Operating temperature: -25 to +55 °C
• Standards: IEC 60947-3, VDE 0660 Part 107

Our verdict

A robust, high-voltage-rated main switch with emergency-stop functionality, ideal for industrial control panels where safety and reliability are paramount.