Phoenix MK Series Compact PCB Terminal Blocks Selection Guide

Phoenix MK series products are compact PCB terminal blocks, covering sub-series like MKKDSN/MKKDSH/MKDSP/MKDSO/MKDSN/MKDS/MK3DS, with compatible wire cross-sections from 1mm² to 25mm² and pitches ranging from 3.5mm to 15.00mm. They feature diverse pole counts, color coding, and directional wiring designs, suitable for high-density signal and low-medium power circuit connection in industrial controllers, sensors, and small automation equipment.

1. Core Model Classification & Product Descriptions

The series is categorized by sub-series characteristics for clear identification, with key parameters including wire spec, pole count, pitch, and special functions:

1.1 MKKDSN/MKKDSH/MKKDSG/MKKDS Series (1–3mm² Small-line Spec, Basic Models)

Focus on low-power signal circuit connection, with compact structure and multiple pitch options.

1.2 MKDSP Series (10–25mm² Medium-large Line Spec, High-current Models)

Designed for medium-high power circuit connection, with large pitch and enhanced current-carrying capacity.

1.3 MKDSO Series (1.5–2.5mm², Directional Wiring Models)

With left (L)/right (R) directional wiring design, suitable for narrow-space PCB layout.

1.4 MKDSN/MKDS Series (1–5mm², Full-spec Coverage Models)

Full wire spec coverage, with multi-pole count and pitch options, for general-purpose PCB wiring.

1.5 MK3DSN/MK3DS Series (1–1.5mm², Three-phase Dedicated Models)

Optimized for three-phase small-power circuit connection, with compact three-phase integration.

2. Quick Interpretation of Model Naming Rules

The naming logic of the MK series is standardized, with each segment corresponding to clear product parameters:

3. Core Advantages of MK Series Products

1. Full Wire Spec & Pitch CoverageCovers 1mm²–25mm² wire cross-sections and 3.5mm–15.00mm pitches, meeting the connection needs of micro-signal, medium-power, and high-current circuits.
2. Diversified Structural DesignDirectional wiring (L/R) models adapt to narrow PCB spaces; three-phase dedicated models optimize three-phase circuit layout; color-coded models facilitate circuit identification.
3. High-density Wiring CapabilitySupports up to 12-pole (1.5mm²) and 11-pole (1mm²) high-density design, maximizing wiring efficiency in limited equipment space.
4. Special Scenario AdaptationHigh-voltage (HV) models meet high-voltage control requirements; high-temperature (HT) models adapt to harsh industrial environments; color-coded models reduce maintenance errors.

4. Product Selection Suggestions

1. Select by Wire Spec & Current Requirements
   • For micro-signal circuits (1–1.5mm²): Choose MKKDSN/MKDSN/MKDS models (e.g., 1726040, 1729225).
   • For medium-power circuits (2.5–5mm²): Select MKDSO/MKDS models (e.g., 2908472, 1714984).
   • For high-current circuits (10–25mm²): Adopt MKDSP series models (e.g., 1932643, 1929546).
2. Select by Pitch & Installation Space
   • For ultra-high-density wiring (narrow space): Choose 3.5mm/3.81mm pitch models (e.g., 1751332, 1727078).
   • For standard medium-density wiring: Select 5.08mm pitch models (e.g., 1726040, 1888700).
   • For high-current wiring: Use 10.16mm/12.7mm/15.00mm large-pitch models (e.g., 1706798, 1932643).
3. Select by Special Function Requirements
   • For narrow-space directional wiring: Choose MKDSO series L/R models (e.g., 2908485, 2695947).
   • For circuit identification: Select color-coded models (OG for power, BU for signal, e.g., 1707430, 2695947).
   • For high-voltage circuits: Use HV suffix models (e.g., 1929546, 1724624).