DIN Rail Mount Screw Terminal Block Adapter Module - Raspberry Pi I/O

In this review the DIN Rail Mount Screw Terminal Block Adapter Module is examined as a practical interface for moving Raspberry Pi boards into industrial-style installations. It is aimed at makers and engineers who need a robust, pluggable way to wire a Pi to field devices. The single biggest reason to buy is the combination of a 3.81mm pitch screw terminal array and a DIN rail carrier that turns a Raspberry Pi into a neat, serviceable control node without trial-and-error wiring.

Key Features

• DIN rail mount carrier: The fireproof nylon carrier supports common 35mm, 32mm and 15mm rails for secure, professional mounting in control cabinets.
• Screw terminal interface: High quality 3.81mm pitch screw terminals accept 26-16AWG wire and simplify field wiring with a 5mm strip length requirement.
• Raspberry Pi compatibility: Designed to plug into Raspberry Pi A+, 3A+, B+, 2B, 3B, 3B+, 4B, Zero and Zero-W with CN3/CN4 1:1 connectivity for direct I/O access.
• Extension connector: CN4 provides a 40-pin extension path so the board can connect to other devices using an FRC 40-pin cable for distributed wiring.
• Durable PCB construction: FR-4 fiber glass PCB with dual copper layers gives a solid, reliable base for repeated installs and wiring changes.
• Compact footprint: The module and PCB dimensions are sized to fit in racks and panels without excessive space penalties.

Who It's For

The module is best for makers, hobbyists and small automation projects where a Raspberry Pi is being used as a controller and needs tidy, serviceable field wiring. It is especially handy in labs, educational workshops, and small industrial panels where DIN rail mounting and screw wiring speed maintenance and changes.

It is less appropriate for users who need sealed, waterproof I/O or those who require integrated relays or high-voltage isolation on the adapter itself. Users expecting plug-and-play support for unsupported Pi models without any soldering should look at alternatives.

Pros & Cons

Pros

• Robust DIN rail carrier and fireproof nylon material deliver a professionally mountable module.
• Wide compatibility with Raspberry Pi models, now including Pi Zero and Pi Zero W with a simple header solder on the Pi side.
• High quality 3.81mm screw terminals make wiring clear and serviceable for field technicians.
• FR-4 PCB and dual copper layers provide durable electrical connections for repeated use.

Cons

• Pi Zero and Zero W require a 2x20 male header to be soldered on the Pi before use, adding a small assembly step.

Specifications

Module Dimensions	L 102mm x W 87mm x H 45.5mm
PCB Dimensions	L 100mm x W 72.5mm
Screw Terminal Pitch	3.81mm / 0.15 in
Wire Range	26-16 AWG (strip length 5mm)
Mounting Carrier	Fireproof nylon, fits 35mm / 32mm / 15mm DIN rail
PCB Material	FR-4 fiber glass, dual copper layers
Compatibility	Raspberry Pi A+, 3A+, B+, 2B, 3B, 3B+, 4B, Zero, Zero-W

Our Verdict

This DIN rail terminal adapter is a practical, cost-effective way to move Raspberry Pi projects into cabineted, serviceable installations. It pairs robust mechanical mounting with clear screw terminal wiring and broad Pi compatibility, making it good value for labs, small automation builds and field-prototyping where neat wiring and maintainability matter.

Frequently Asked Questions

Does this fit Raspberry Pi Zero and Zero W?
The board supports Pi Zero and Zero W in the updated version, but you must solder a 2x20 male header to the Pi first.

What wire sizes will the terminals accept?
The screw terminals accept 26-16 AWG wire and require about a 5mm stripped conductor length.

Can the carrier be used for panel mount?
Yes, the fireproof nylon carrier can be taken apart for panel mount use as an alternative to DIN rail installation.