Siemens Sentron Switch disconnector, 4-pole, red/yellow, 37kA, 100A Part number 3LD2704-2TC53

Product Overview

The Siemens SENTRON 3LD2704-2TC53 is a 4-pole switch-disconnector and emergency-stop switch designed for fixed front-mounting applications in industrial environments. With a rated current of 100 A and operational power up to 37 kW (AC-23 A / 400 V), the device ensures safe manual isolation and emergency-off capability for power distribution and machinery control systems.

Key Features

• 4-pole (4 P) emergency switching-off / main switch device
• Rated current: 100 A
• Rated operational power: up to 37 kW at 400 V AC (AC-23 A)
• Front-mounted rotary operating mechanism with red/yellow knob for emergency-stop recognition
• High protection class IP65 for front face – suitable for demanding industrial conditions
• Size designation “4” in the 3LD series, fixed mounting, 4-hole handle assembly

Technical Specifications

• Product Series: Siemens SENTRON 3LD Switch-Disconnector
• Article Number: 3LD2704-2TC53
• Number of Poles: 4
• Rated Current (In): 100 A
• Rated Operational Power: 37 kW (AC-23 A / 400 V)
• Insulation Voltage (Ui): 690 V AC
• Surge Voltage Resistance: 6 kV
• Mechanical Service Life: ~100,000 operating cycles
• Protection Class Front: IP65
• Net Weight (Approx.): ~0.677 kg

Compliance & Certifications

• Complies with standards for switch-disconnectors and emergency stop devices in industrial installations
• Designed for use as main switch, switch-disconnector or emergency-off switch with manual operation
• Suitable for industrial environments requiring high ingress protection and secure disconnect capability

Applications

Ideal for use in low-voltage power distribution cabinets, control panels, motor control centres or machinery installations where emergency-stop or manual isolation functionality is required. The 3LD2704-2TC53 ensures reliable manual switching and emergency disconnection in challenging industrial environments.