3.81mm Through-Wall Panel Pluggable Terminal Block

3.81mm Through-Wall Terminal Block Overview

The 3.81mm Through-Wall Terminal Block is engineered for high-reliability industrial electronics and heavy-duty wire harness applications. This two-piece system features a secure screw-clamping female plug and a robust male header with integrated mounting flanges, providing a seamless and vibration-proof solution for transmitting power and signals through enclosure walls or panels.

3.81mm Through-Wall Terminal Block Key Features

• Reliable Cage Clamp Mechanism: Employs a premium square cage clamp (方扣) and M2 copper zinc-plated screws to ensure maximum retention force and excellent electrical conductivity without damaging the wires.

• Secure Panel Mounting: Equipped with robust side mounting ears and threaded brass inserts, allowing stable panel cutout integration that withstands frequent plugging cycles.

• Excellent Material Integrity: Molded from flame-retardant PA66 (UL94V-0) thermoplastic housing, paired with nickel-plated phosphor bronze contacts and tin-plated copper headers for superior corrosion resistance and longevity.

• Flexible Configurations: Available from 2 to 24 poles to match various complex wiring harness architectures and space-constrained industrial layouts.

3.81mm Through-Wall Terminal Block Specifications

Material Specifications

• Housing: PA66, UL94V-0 (Green as standard)

• Screw: M2, Copper, Zinc-plated

• Contact/Pin Header: Phosphor Bronze, Nickel-plated or Copper, Tin-plated

• Cage Clamp: Brass, Nickel-plated or Steel, Zinc-plated

3.81mm Through-Wall Terminal Block FAQ

Q1: What is the primary application of the 15EDGWB series terminal block?

A: The 15EDGWB series 3.81mm through-wall pluggable terminal block is specifically designed for high-density electrical panel applications. It provides a secure, vibration-resistant connection for data, signals, and power passing through enclosure walls or control cabinets, making it ideal for industrial automation systems and wire harness manufacturing.

Q2: What wire gauges are compatible with this pluggable terminal block?

A: This terminal block supports a wide wire range from 28 AWG to 16 AWG ($0.1\text{ mm}^2 \text{ to } 2.5\text{ mm}^2$). For optimal electrical contact and reliable performance, we recommend a wire stripping length of 7–8 mm before inserting the wire into the cage clamp.

Q3: What are the electrical ratings for this 3.81mm pitch connector?

A: Under standard operating conditions, it features a rated voltage of 300V (UL) / 320V (IEC) and a rated current of 7A to 8A. The dielectric withstanding voltage is AC 2000V for 1 minute, ensuring stable and safe insulation performance in industrial environments.

Q4: Does the male pin header support secure panel mounting?

A: Yes, the male pin header features an integrated flange with mounting holes ($\varnothing 2.30\text{ mm}$). This design allows you to bolt the connector firmly to your panel cutout, preventing loose connections or accidental disconnections during high-vibration operations.

Q5: What materials are used to ensure product durability?

A: We use premium, industry-grade materials for optimal durability:

• Housing: Flame-retardant PA66 (UL94V-0).

• Contacts/Pins: Premium Phosphor Bronze or Copper with nickel or tin plating for excellent conductivity and oxidation resistance.

• Clamping Cage: High-strength Brass or Steel to maintain strong wire retention force.

Q6: Can you customize the number of poles for bulk B2B orders?

A: Absolutely. While standard configurations range from 2P to 24P, we can supply precise pin counts based on your technical drawing requirements. Full dimensional specifications (such as overall length $A$ and hole distance $B$) can be found in our dimensional lookup table above to ensure a perfect fit for your enclosure cutout.