Weidmüller ZDU 35 BL Feed-Through Terminal Block, Spring Clamp Connection, Blue, 35 mm², 1000 V, 125 A

Industrial control panels and distribution systems demand reliable, high-current connections that can withstand harsh environments and simplify wiring. The Weidmüller ZDU 35 BL feed-through terminal block delivers exactly that, engineered for demanding applications where secure, maintenance-free terminations are critical. Its spring clamp (PUSH IN) technology ensures vibration-proof connections without the need for periodic re-tightening, reducing downtime and service calls.

Who is it for

This terminal block is ideal for panel builders, machine manufacturers, and electrical installers working with power distribution, motor control, and industrial automation systems. It suits applications requiring high current capacity up to 125 A and voltages up to 1000 V, such as feeder circuits, large motor connections, and power supply distribution.

Main features

• Spring clamp (PUSH IN) connection for fast, tool-free wiring of solid and flexible conductors from 6 to 35 mm²
• Rated for 1000 V IEC and 125 A, with 8 kV impulse withstand voltage for robust performance
• Blue Wemid (PA 66) insulation, halogen-free and flame-retardant to UL 94 V-0
• Mounts on standard DIN rail TS 35, enabling quick assembly in control cabinets
• Wide operating temperature range from -50 °C to +120 °C, suitable for extreme environments
• Approvals: cURus, EAC, KEMA, ATEX for global compliance and hazardous area use

Specifications

• Connection technology: Spring clamp (PUSH IN)
• Number of connections: 2
• Number of potentials: 1
• Rated voltage (IEC): 1000 V
• Rated current (IEC): 125 A
• Rated impulse voltage: 8 kV
• Conductor cross-section solid: 6–35 mm²
• Conductor cross-section flexible: 6–35 mm²
• Wire stripping length: 20 mm
• Insulation material: Wemid (PA 66)
• Colour: Blue
• Mounting type: DIN rail (TS 35)
• Operating temperature: -50 °C to +120 °C
• Pollution degree: 3
• Overvoltage category: III
• Flammability rating: UL 94 V-0
• Approvals: cURus, EAC, KEMA, ATEX

Tips

For reliable connections, ensure the conductor is stripped to exactly 20 mm and fully inserted into the clamping unit until it stops. The spring clamp mechanism is maintenance-free, but periodic visual inspection is recommended in high-vibration environments. Use appropriate end sleeves for flexible conductors to prevent strand breakage and ensure optimal contact.