Siemens 3LD22031TL51 interruttore principale 4 poli 32A 400V 11,5kW montaggio frontale 4 fori

The Siemens 3LD22031TL51 is a robust main switch/disconnector designed for industrial applications, offering reliable performance and safety. With 4 poles, rated current of 32A, and voltage of 400V AC, it is suitable for motor disconnection and load switching. The front mounting with 4-hole fixing ensures easy installation in control cabinets or distribution boards.

Advantages

High operational reliability with IP65 front protection, lockable handle for safety, and compliance with IEC 60947-3 standards. The rotary operating mechanism provides clear visual indication of switch position.

Suitable for

• Industrial machinery disconnection
• Motor control centers
• Distribution boards requiring main switch
• Applications needing lockable disconnection

Key specifications

• Rated operational current: 32 A
• Rated operational voltage: 400 V AC
• Number of poles: 4
• Rated power (AC-23A, 400V): 11.5 kW
• Mounting: Front mounting, 4-hole
• Degree of protection: IP65 (front), IP20 (terminals)
• Rated insulation voltage: 690 V
• Rated impulse withstand voltage: 6 kV
• Conditional short-circuit current: 50 kA (with fuse 3NA3 820-6)
• Electrical endurance: 10,000 cycles
• Mechanical endurance: 100,000 cycles
• Operating temperature: -25 to +55 °C
• Actuator: Rotary operating mechanism
• Handle color: Black
• Lockable: Yes, with padlock in OFF position
• Standards: IEC 60947-3, VDE 0660 Part 107
• Connection: Screw terminals
• Rated frequency: 50/60 Hz

Recommendations

Ensure proper fusing for short-circuit protection. For optimal performance, use with recommended fuse type 3NA3 820-6.