M12 Molded Cable Cordsets & Connectors Overview

M12 Connector Selection Guide

Choose the Right M12 Cordset or Connector

Compare molded cable cordsets, field-wireable connectors, panel receptacles and M12 power connectors by coding, contact count, body style, cable jacket and installation method.

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🔎 What is an M12 connector?

An M12 connector is a circular industrial connector identified by its 12 mm coupling thread. Commonly called a Micro-Change connector, it creates a compact, secure connection for sensors, actuators, switches, motors, control panels and machine wiring. Major Electronix offers M12 products from Mencom, Hirschmann, HTP, Sealcon and Lumberg Automation.

🛒 Shop M12 Connectors by Installation Type

Start with how the connection will be installed. Each option solves a different wiring or maintenance need.

M12 Molded Cable Cordsets

Use factory-molded, sealed cable assemblies for fast sensor and actuator connections with fewer field-assembly steps.

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M12 Field-Wireable Connectors

Terminate cable at the machine when a custom cable length, repair or on-site wiring change is required.

Shop Hardwired

M12 Receptacles

Create a fixed machine or enclosure connection point that mates with an M12 cordset.

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M12 Power Connectors

Carry power to compact motors, lighting, heaters and equipment using an application-specific power coding.

Shop M12 Power

✅ Select an M12 Connection in 6 Steps

Match every item before ordering. The contact count alone does not guarantee that two M12 connectors will mate or work electrically.

1. Identify the circuit
Signal, data or power determines the connector family and coding.

2. Match the coding
Confirm the keyway: A, S, K, L or the exact code required by the equipment.

3. Match contacts and gender
Choose the required pin count plus male or female mating face.

4. Choose the body style
Use straight bodies for direct access or right-angle bodies where clearance is limited.

5. Select cable and length
Check jacket material, conductor size, shielding, flexibility and routing distance.

6. Verify ratings
Confirm voltage, current, temperature, ingress and environmental ratings on the product page.

🔌 M12 Molded Cordset Configurations

Standard M12 molded cable cordsets commonly use an A-coded insert with one keyway. Options include 2–12 contacts; male or female ends; straight or right-angle configurations; and single-ended or double-ended assemblies. Common cable lengths are 2, 5 and 10 meters, while the full range spans approximately 0.3–20 meters.

A-coded M12 connector insert with single keyway

A-Coded M12 Insert

Where should you start?

For many sensor and actuator circuits, begin with a female straight cordset, then match the pin count and cable requirements to the device. Two frequently selected configurations are:

4-Pin Female Straight 5-Pin Female Straight

🧪 Choose the Cable Jacket for the Environment

Use the application conditions, not just the jacket color, to select a cable. Temperature ratings vary by cable construction, so verify the individual product datasheet.

Cable Type	Typical Strength	Temperature Information	Common Colors
PVC	Cost-effective choice for general industrial wiring	Some constructions are rated from −40°C to 90°C or 105°C	Gray, orange, yellow or black
PUR	Improved resistance to abrasion, tearing and many industrial chemicals	Common constructions are rated −40°C to 80°C or −25°C to 80°C	Yellow or black
Armored	Adds protection against impact, abrasion and harsh exposure	Depends on the inner cable and armor construction	Varies by construction (see options below)

304 stainless-steel armor
Helps protect cable against crushing, impact, abrasion and corrosive exposure.

PVC-covered stainless armor
Adds an outer water-resistant layer over mechanical cable protection.

Silicone tubing
Useful where temperature, chemical exposure, hygiene or food-contact requirements apply.

🧰 Receptacles vs. Field-Wireable Connectors

Panel-Mount Receptacles

Use a receptacle to bring an M12 connection through a machine wall or control enclosure. Many versions include 12-inch wire leads and are available with 2–12 contacts.

Back mount: inserts from behind the panel and is secured from the front.
Front mount: inserts from the front and is secured from the rear.
Common panel threads: M16, M20, 1/4-inch NPT, 1/2-inch NPT, PG9 or PG11.

Field-Wireable Connectors

Use a hardwired M12 connector when cable must be cut to length, replaced in the field or routed before termination. Screw-terminal contacts allow installers to complete wiring on site.

Contacts: commonly 2–8
Body options: male or female; straight or right angle
Common cable-entry threads: PG7 or PG9

⚡ M12 Signal and Power Connectors Are Not Interchangeable

Standard A-coded M12 products are commonly used for sensors and actuators. M12 power connectors are designed for power delivery and may use S-, K- or L-coded inserts. Select the code specified by the equipment, then confirm its voltage, current, contact and cable ratings.

S-coded M12 power connector insert — S-Coded M12 Power Insert

K-coded M12 power connector insert — K-Coded M12 Power Insert

L-coded M12 power connector insert — L-Coded M12 Power Insert

Power-connector planning: M12 power products are used with compact motors, material-handling equipment, industrial lighting, heaters, medical equipment and packaging machinery. Available products include Sealcon field-wireable connectors and Lumberg Automation molded cordsets. Molded versions commonly use 4 or 5 contacts with 2, 5 or 10 meter cable lengths; confirm current product availability before specifying a right-angle cordset.

🧩 M12 Part Number Guides

Use these brand-specific tools to decode construction options and narrow the correct M12 connector or cordset part number.

🔷 HTP M12 Connector Part Number Guide → 🟢 Mencom M12 Molded Cordset Guide → 🟠 Mencom M12 Receptacle Guide → 🔴 Sealcon M12 Cordset Guide →

📋 Quick M12 Ordering Checklist

☐ Connector coding and keyway

☐ Male or female mating face

☐ Number of contacts

☐ Straight or right-angle body

☐ Single- or double-ended cable

☐ Cable length and jacket

☐ Voltage and current ratings

☐ Temperature and ingress ratings

❓ M12 Connector FAQs

What is the difference between an M12 cordset and an M12 receptacle?

A molded cordset carries the cable and mating connector, while a receptacle creates a fixed connection point on a panel, enclosure or machine. The two are selected to mate by coding, contact count and gender.

When should I choose PUR instead of PVC cable?

Choose PUR when the cable needs greater resistance to abrasion, tearing or industrial chemicals. PVC is often the more economical option for general stationary wiring and may offer a broader upper-temperature range in some constructions.

Can M12 connectors with the same number of contacts always mate?

No. The coding, keyway, gender and contact arrangement must match. Electrical ratings and pin assignments must also suit the equipment even when the mechanical connection appears compatible.

Need Help Matching an M12 Connector?

Have the equipment connection, coding, contact count, cable length and environmental requirements ready. Our team can help narrow the available M12 cordsets, receptacles and field-wireable connectors.

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