Terminal Connector Weidmuller

Terminal Connector Weidmuller

Terminal Connector Weidmuller – Double-Level DIN Rail Terminal Block (WDK 2.5 Series)

The Terminal Connector Weidmuller (Model WDK 2.5 / Part No. 1021500000) is an industrial-grade, double-level feed-through terminal block engineered for high-density control cabinet wiring. Utilizing Weidmüller’s proven W-Series screw connection system, this terminal block enables two independent electrical circuits to be wired within a ultra-compact 5.1 mm width profile. It effectively doubles wiring density on standard 35 mm DIN rails (TS 35), saving valuable panel space.

Manufactured from flame-retardant Wemid insulating housing (UL 94V-0 certified), the Terminal Connector Weidmuller provides excellent mechanical strength, thermal stability, and vibration resistance. With a rated current capacity of up to 24 A (IEC) and a rated voltage of 400 V AC/DC, it is a reliable choice for automation panels, industrial distribution boxes, and machinery control circuits.

As shown in the product image, the terminal connector features a two-tier dark beige Wemid body equipped with two independent levels of M2.5 screw clamp yokes, allowing side wire entry and straightforward top-hat DIN rail mounting.

Key Features of the Terminal Connector Weidmuller

• Double-Tier High-Density Design: Features two feed-through levels within a single 5.1 mm width shell, reducing total DIN rail footprint by up to 50%.

• Patented W-Series Screw Clamp Technology: Hardened steel clamping yokes and tinned copper busbars deliver high contact forces and gas-tight electrical connections.

• Wemid Insulating Housing: Flame-retardant material rated UL 94V-0 handles continuous operating temperatures ranging from -60°C to +130°C.

• Wide Wire Gauge Range: Accepts solid and finely stranded conductors from 0.5 mm2 to 4 mm2 (AWG 30 to AWG 12) with or without wire-end ferrules.

• Snap-On TS 35 Rail Mounting: Easily snaps onto standard symmetrical DIN rails with secure mechanical retention.

• Global Safety Certifications: Certified according to IEC 60947-7-1, UL, CSA, CE, and ATEX/IECEx standards for global industrial and hazardous environment use.

Common Applications and Practical Usage

The space-saving profile and connection security of the Terminal Connector Weidmuller make it widely used across industrial electrical infrastructure:

• Control Cabinet & Switchgear Assembly: Connects control logic, signal loops, and auxiliary power distribution lines inside crowded panel enclosures.

• Industrial Automation & PLC I/O Panels: Manages high-density sensor and actuator field wiring feeding into PLC input/output cards.

• Process & Power Engineering: Serves in power generation plants, motor control centers (MCCs), and energy distribution panels.

• Hazardous Environment Equipment: ATEX and IECEx certification allows installation in explosive gas atmospheres (Zone 1 / Zone 2).

Technical Specifications

The primary electrical, mechanical, and material specifications for the Terminal Connector Weidmuller (WDK 2.5) are summarized below:

Installation Guidelines and Best Practices

WIRING TIP: Strip wire conductors to exactly 10 mm to ensure full insertion into the clamping yoke without leaving exposed uninsulated wire outside the housing entry.

• Torque Control: Use a 0.6 x 3.5 mm slotted screwdriver and torque screws between 0.4 N c.m and 0.6 N c.m to prevent overtightening.

• End Plate Usage: Place a matching WDK 2.5 end cover plate (1059100000) on the open right side of the last terminal block in a row for proper touch safety.