DIN 43650 Solenoid Valve Connectors

Industry Standard Connectors for Automation, Fluid Control and Industrial Applications

DIN 43650 Connectors

Major Electronix offers a comprehensive range of DIN 43650 / ISO 4400 (EN 175301-803) Solenoid Valve Connectors with multiple configuration options. Our connectors feature indicator lights, surge suppression, and molded cable to meet your specific application requirements. We carry products from leading manufacturers including Hirschmann, HTP, MURR, and Omal. Major Electronix stocks both field attachable and molded solenoid valve connectors for immediate delivery and can provide custom connector assemblies to your specifications.

Form A
Form A Connector
Form A Diagram View Form A Products
Form B
Form B Connector
Form B Diagram View Form B Products
Form C
Form C Connector
Form C Diagram View Form C Products

Understanding DIN 43650 Standards

ISO 4400 refers to the standards set by the International Organization for Standardization for electrical connectors. DIN 43650 refers to the set of standards made by DIN (Deutsches Institut fur Normung), the German standard setting organization. DIN 43650 is now known as the EN 175301-803 standards. Other names for these connectors include MPM or sugarcube connectors. They come in three versions: Form A, Form B or Form C and are designed to meet various overvoltage protection requirements within specific voltage limits.

Form A Connectors

  • Pin Configuration: "U" shaped pins facing inwards
  • Pin Spacing: 18 mm between pins #1 and #2
  • Thread Types: PG 9, PG 11, M16, or 1/2" NPT
  • Application: Larger solenoid valves and high-power applications
  • Dimensions: Largest of the three connector types (30mm × 30mm)
  • Protection Rating: Up to IP67 when properly installed

Form B Connectors

  • Pin Spacing: Available in 10mm & 11mm
  • Contact Type: 11mm with 3 flat blade contacts (industry standard)
  • Alternate Type: 10mm with 1 flat blade and 2 U-shaped pins
  • Thread Types: PG 9 or 1/2" NPT
  • Application: Medium-sized equipment and controls
  • Dimensions: Medium sized (approximately 18mm × 18mm)

Form C Connectors

  • Pin Type: Flat blade pins
  • Pin Spacing: 8mm or 9.4mm (industry standard)
  • Thread Type: PG 7 only
  • Application: Miniature solenoid valves and space-limited applications
  • Alternative Name: Sub-micro valve connectors
  • Dimensions: Smallest connector type in the family

Gasket Options

  • NBR Profile: Oil-resistant material suitable for mineral and vegetable oils
  • NBR Flat: Alternative configuration of nitrile rubber
  • EPDM Flat: Better resistance to ozone, heat, and weather, but less resilient against oils
  • Chemical Resistance: Both NBR and EPDM withstand basic diluted acids and alkalines
  • Manufacturers: Available from HTP and Hirschmann
  • Availability: Separate gaskets available for most male DIN connectors

Thread Types

DIN 43650 solenoid valve connectors will have different thread types for the cable entry, depending on the form. Form A connectors are currently available in PG 9, PG 11, M16, or 1/2" NPT thread sizes. Form B features PG 9 or 1/2" NPT threads, while Form C connectors are only available with PG 7 thread. M16 is a metric thread type, which globally is the most commonly used type. The number refers to the nominal diameter in millimeters. PG stands for Panzergewinde and refers to German standards. PG has a bigger thread angle but a lower thread depth than metric or NPT. NPT stands for National Pipe Thread and is an American standard. Unlike metric or PG, these threads are tapered, which helps form a seal.

Pin Spacing

Pin spacing refers to the distance between pins #1 and #2. Each form has different pin spacing, and the pin type also changes depending on the form. Form A connectors have "U" shaped pins facing inwards with an 18 mm pin spacing. Form B connectors have 2 different pin spacings: 10mm & 11mm. 11mm connectors will have 3 flat blade contacts and are the industry standard. 10mm connectors will have 1 flat blade and 2 U shaped pins pointing outward. Form C connectors have flat blade pins with 8mm or 9.4mm (industry standard) pin spacing.

Connector Options and Circuit Protection

Option Description Benefit
Molded Cable Available in a variety of lengths with PVC or PUR jacket Simplified installation, improved protection against environment
MOV Suppression Metal Oxide Varistor for surge protection Gives overvoltage protection to the source and load
LED Indicator Visual confirmation of power supply Easier troubleshooting and system status monitoring
Diode Redirects voltage surges away from sensitive components Gives overvoltage protection by redirecting a surge
Zener Diode (Z Diode) Protects against excessive voltage spikes Redirects surges & blocks off a circuit when overvoltage occurs
Resistor-Capacitor (RC) Absorbs power surges Takes in and discharges power surges
Bridge Rectifier AC to DC converter Converts AC input into DC output
Switching Amplifier Output control circuit Controls the output signal

Industrial Applications

  • Hydraulic and pneumatic control systems
  • Industrial automation and manufacturing
  • Process control in chemical plants
  • Machine building and tooling
  • Conveyor systems and material handling
  • Equipment manufacturing
  • Robotics and automated assembly lines

Specialized Industry Uses

  • Agricultural machinery and irrigation systems
  • Automotive manufacturing and systems
  • Food and beverage processing equipment
  • Pharmaceutical manufacturing
  • Water treatment facilities
  • HVAC control systems
  • Medical equipment and laboratory instrumentation

Protection Classes

DIN 43650 connectors are available with different protection ratings based on their ability to resist dust and water ingress. The IP (Ingress Protection) rating consists of two digits. The first digit indicates protection against solid objects, while the second digit indicates protection against liquids.

IP Rating Protection Level Connector Types
IP65 Dust-tight and protected against water jets from any direction Standard DIN 43650 connectors when properly installed
IP67 Dust-tight and protected against temporary immersion in water Premium connectors with enhanced sealing
IP40 Protected against objects larger than 1mm but no water protection Basic indoor-use connectors

Why Choose DIN 43650 Connectors?

Advantages

  • Standardized design ensures compatibility across manufacturers
  • Durable construction for harsh industrial environments
  • Multiple protection circuits available
  • Easy installation and maintenance
  • Various gasket options for different environmental conditions
  • Wide range of thread types and configurations

Selection Criteria

  • Environmental conditions (temperature, moisture, chemical exposure)
  • Space constraints in the application
  • Electrical requirements (voltage, current)
  • Pin configuration compatibility with existing equipment
  • Protection circuit needs (LED, diode, MOV, etc.)
  • Thread type compatibility with your setup

Comparison Charts

Each of these different versions have characteristics which set them apart from the other two, which are listed in following comparison charts:

↗ DIN 43650 Connector Basic Characteristics DIN 43650 Connector ↗ DIN 43650 Connector Form A Hardwired Comparison Form A Comparison ↗ DIN 43650 Connector Form A Hardwired w/Circuit Comparison Form A Circuit Comparison ↗ DIN 43650 Connector Form B Hardwired Comparison Form B Comparison ↗ DIN 43650 Connector Form C Hardwired Comparison Form C Comparison

Industry Trends and Future Developments

The solenoid valve connector market continues to evolve with industry demands. Recent trends include increased integration with Industry 4.0 systems, higher protection ratings for harsh environments, and improved energy efficiency. The growing adoption of solenoid valves in water treatment, beverage industries, and automotive applications is driving innovation in connector design.

Manufacturers are now developing more compact connectors with enhanced features such as programmable timers, advanced diagnostics, and smart connectivity options. As industrial automation advances, the reliability and functionality of DIN 43650 connectors remain crucial for ensuring seamless operation of fluid control systems.

Need Help Selecting the Right Connector?

Major Electronix's technical team is available to help you select the perfect DIN 43650 connector for your application. Whether you need standard connectors from our extensive inventory or custom assemblies designed to your specifications, we have the expertise and products to meet your requirements.

Contact our team today to discuss your solenoid valve connector needs and get expert advice on the optimal solution for your industrial automation, fluid control, or manufacturing applications.