M12 4-Pin Female Sensor Connector (For Proximity, Limit, E-Stop Switches)

The female 4-pin sensor connector M12 A-code is a standardized industrial connector widely used for transmitting signals or low-power electrical currents in automation, robotics, and sensor applications. Here's a complete description:

Key Features:

Gender: Female (accepts male connector pins)

Number of Pins: 4 pins

Connector Type: M12 (12 mm diameter circular connector)

Coding: A-coded (ensures proper mating and prevents cross-connection with other coding types, such as B, C, or D)

Pin Configuration:

• Pins are evenly spaced in a circular pattern within the connector housing.
• Pin assignments typically follow the IEC 61076-2-101 standard.
• Common usage:
  • Pin 1: +V (Power Supply)
  • Pin 2: Data/Signal
  • Pin 3: GND (Ground)
  • Pin 4: Data/Signal

Material:

• Shell/Body: Usually made of nickel-plated brass, stainless steel, or durable plastics for environmental resistance.
• Insert: Insulating material like PBT or TPU to securely hold the pins.
• Contacts: Gold-plated brass or copper for excellent conductivity and corrosion resistance.

Sealing and Protection:

• IP Rating: Commonly IP67 or IP68, ensuring protection against dust, dirt, and temporary or continuous immersion in water.
• Seals and gaskets prevent ingress of liquids or contaminants, making it ideal for harsh environments.

Termination:

• Solder termination

Mounting/Connection Type:

• Panel Mount: Threaded connection for securing to a fixed structure.

Electrical Ratings:

• Voltage: Typically 30V to 250V AC/DC (depending on application and manufacturer specifications)
• Current: Usually up to 4A per pin
• Resistance: Low-contact resistance for reliable signal transmission

Temperature Range:

• Operating temperatures typically range from -25°C to +80°C, with some models rated for extended temperature ranges.

Application:

• Sensors: Connect proximity sensors, photoelectric sensors, or other industrial sensing devices.
• Actuators: Suitable for small motor connections.
• Automation Systems: Widely used in PLCs, I/O modules, and control systems.

Standards Compliance:

• IEC 61076-2-101 (M12 connector standard)
• RoHS and REACH compliant materials (varies by manufacturer)

Appearance:

The connector has a circular housing with a female socket that mates with a corresponding male M12 connector. The A-coding keying mechanism ensures it fits only compatible connectors, preventing misconnection. The exterior is typically threaded to secure a firm and vibration-resistant connection.

This connector is highly reliable and suitable for industrial environments requiring ruggedness and durability.