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The M12 A-Coded 12-Pin Female Field Wirable Assembly, Straight is a high-density industrial circular connector engineered for multi-signal applications where up to 12 independent circuits must be connected in a single compact interface. Manufactured in full compliance with IEC 61076-2-101, this female connector delivers IP67 environmental protection combined with dense 12-pin capacity, making it the ideal solution for sensor arrays, signal distribution panels, and complex I/O wiring in industrial automation.
The housing is constructed from zinc alloy with nickel plating for superior corrosion resistance in harsh environments including outdoor installations, washdown areas, and chemical-exposed workspaces. Contacts are made of gold-plated brass for low contact resistance (≤5mΩ) and oxidation-proof signal reliability over 100+ mating cycles. The screw-type termination supports field wiring with cables of 4-8mm diameter — no crimping tools required. FPM/FKM (fluoroelastomer) seals maintain IP67 protection across the full operating range of -25°C to +85°C.
Key Features
IP67 Environmental Protection: Fully dust-tight and waterproof. Withstands immersion in 1 meter of water for 30 minutes. FPM/FKM elastomer seals resist oil, coolant, and chemical exposure for long-term sealing integrity in demanding industrial conditions.
12-Pin High-Density Configuration: Twelve independent circuits in a single M12 connector footprint. Reduces connector count, panel space, and wiring time for multi-sensor nodes and dense I/O applications.
Gold-Plated Brass Contacts: Brass contacts with gold plating deliver ≤5mΩ contact resistance and ≥100MΩ insulation resistance, preventing signal degradation in noise-sensitive industrial environments.
Field-Wirable — No Crimping Tools: Screw termination accepts 4-8mm cable diameter. Strip, insert, tighten — complete wiring on-site in under 10 minutes without specialized equipment.
Technical Specifications
Applicable Standard
IEC 61076-2-101
Connector Type
M12 A-Coded Female, Field Wirable, Straight
Pin Count
12
Thread Size
M21×1
Overall Length
~57 mm
Outer Diameter
~20 mm
Housing Material (Connector Nut)
Alloy / Brass, Nickel-Plated
Contact Material
Gold-Plated Brass
Contact Carrier Material
PA (Polyamide), Black
Crimp Base Material
Zinc Alloy, Nickel-Plated
Sealing Material
FPM / FKM (Fluoroelastomer)
Rated Current
1.5A
Rated Voltage
30V
Insulation Resistance
≥ 100 MΩ
Contact Resistance
≤ 5 mΩ
Pollution Degree
3
Operating Temperature
-25°C to +85°C
Mechanical Life
> 100 Mating Cycles
IP Rating
IP67
Coding
A-Coded
Termination Type
Screw Connection
Cable Exit Diameter
4-8 mm
Dimensions
Thread Standard: M21×1
Overall Length: ~57 mm
Outer Diameter: ~20 mm
Cable Exit: 4-8 mm
Orientation: Straight (0°)
Mating Compatibility: All M12 A-Coded 12-Pin Male Connectors
Pin Layout (12-Pin A-Coded Female)
The 12-pin configuration arranges contacts in a single circle inside the M12 female housing, following IEC 61076-2-101 A-Coded standard:
12 pins evenly distributed in a circular pattern
Standard A-Coded keyway positioning (female)
Fully compatible with any M12 A-Coded 12-pin male connector from all major manufacturers
Applications
Multi-Sensor Junctions: Aggregating signals from multiple sensors at a single connection point — temperature, pressure, proximity, and level sensors
Dense I/O Distribution: Connecting high-channel-count sensor arrays in process automation and factory floor installations
Signal Distribution Panels: Multi-circuit breakout points for distributing control signals to actuators or field devices
Robotics & Motion Systems: Feedback wiring for multi-axis motor controllers, encoder clusters, and servo drive interfaces
Conveyor Systems: Centralized sensor wiring for length measurement, object detection, and position feedback
HVAC & Building Automation: Multi-zone thermostat and damper control connections where panel space is limited
Agricultural Machinery: Sensor arrays for soil moisture, temperature, GPS guidance, and implement monitoring in outdoor environments
Water & Wastewater Treatment: IP67-rated connections for multi-channel level sensors, pH probes, and flow meters in wet environments
Installation Guide
Prepare the cable: Strip the outer jacket to expose 12 individual conductors. Ensure total cable diameter is between 4mm and 8mm for proper gland sealing.
Thread the components: Pass the cable through the coupling nut, cable gland insert (PA), and FPM sealing ring in the correct order.
Terminate the wires: Insert each of the 12 conductors into its designated female pin terminal. Tighten each screw — avoid overtightening to prevent contact damage.
Assemble the housing: Slide the female connector housing over the terminated contacts, aligning the A-Coded keyway notch.
Seal and tighten: Thread the coupling nut onto the M21×1 housing thread. Tighten by hand until the FPM seal compresses uniformly around the cable.
Verify: Check all 12 pins are seated, housing is fully threaded, and cable cannot be pulled out. Test continuity on all 12 circuits before commissioning.
Complete Product Range — M12 A-Coded Female Field Wirable, Straight
Pin Layout
Pins
Connection
Coding
Current
Voltage
Angle
Cable Ø
Part Number
○○○
3
Screw
A-CODE
4A
250V
Straight
4-8mm
H1203FV-0
○○○○
4
Screw
A-CODE
4A
250V
Straight
4-8mm
H1204FV-0
○○○○○
5
Screw
A-CODE
4A
60V
Straight
4-8mm
H1205FV-0
○○○○○○○○
8
Screw
A-CODE
2A
30V
Straight
4-8mm
H1208FV-0
○○○○○○○○○○○○
12
Screw
A-CODE
1.5A
30V
Straight
4-8mm
H1212FV-0
Frequently Asked Questions
Q1: What is the rated current and voltage for the 12-pin M12 female connector?
The 12-pin M12 A-Coded female connector is rated at 1.5A per pin at 30V AC/DC. The reduced ratings compared to lower pin counts (e.g., 3/4-pin at 4A/250V) are due to smaller contact size and tighter pin spacing needed to fit 12 pins within the M12 housing. It is designed for signal-level and low-power applications, not for power distribution.
Q2: Is the 12-pin M12 female connector compatible with 8-pin or 5-pin male connectors?
No. The 12-pin M12 A-Coded female connector only mates with 12-pin A-Coded male connectors. M12 connectors with different pin counts have different keyway positions and pin arrangements — they are physically incompatible by design. This prevents incorrect connections that could damage equipment.
Q3: Can this 12-pin connector carry digital signals like IO-Link?
Yes. The 12-pin M12 A-Coded female connector supports digital signal transmission including IO-Link, PROFINET, and other industrial communication protocols at signal level. For high-speed Ethernet (100 Mbps+), consider D-Coded or X-Coded M12 connectors. The 12-pin A-Coded is best suited for standard sensor-level signals, DC power, and low-speed digital I/O.
Q4: What is the difference between 12-pin A-Coded and 12-pin X-Coded?
Both support 12 pins but serve different purposes. A-Coded connectors are for sensor/actuator signal wiring at low voltage (30V, 1.5A). X-Coded connectors are for high-speed data transmission (up to 10 Gbps). They have different keyways and are not interchangeable.
Q5: How do I verify IP67 sealing after field installation?
After wiring, ensure: (1) the FPM/FKM sealing ring is seated evenly around the cable with no gaps; (2) the coupling nut is hand-tightened until the cable cannot move; (3) the housing thread is fully engaged with no cross-threading. IP67 rating is only guaranteed when the connector is properly assembled and mated with a compatible male connector.
Q6: What cable diameter range is supported?
The cable gland accepts cables with an outer diameter of 4mm to 8mm. Cables outside this range will not seal properly — cables thinner than 4mm may not be gripped, and cables thicker than 8mm will not fit. Use an adapter if your cable falls outside this range.
Q7: What materials are used in this connector?
The connector nut is made of alloy/brass with nickel plating. Contacts are gold-plated brass. The contact carrier is black PA (polyamide) plastic. The crimp base housing is zinc alloy with nickel plating. Sealing uses FPM/FKM (fluoroelastomer) rings that resist oils, chemicals, and UV from -25°C to +85°C.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2021
Total Annual:
5000000-6000000
Employee Number:
80~120
Ecer Certification：
Verified Supplier
KRONZ is a manufacturing enterprise located in Zengcheng District, Guangzhou City. We focus on providing customers with high-efficiency industrial automation solutions and related industrial products. After many years of innovation and development, Kronz has complete product processing equi...
KRONZ is a manufacturing enterprise located in Zengcheng District, Guangzhou City. We focus on providing customers with high-efficiency industrial automation solutions and related industrial products. After many years of innovation and development, Kronz has complete product processing equi...
Floor 7, Building 12B, Hanhe Robot Intelligent Manufacturing Base Exhibition Center, Xiangshan Avenue, Zengcheng Economic Development Zone, Guangzhou, Guangdong Province, China
