SPIDER Automation | 4mm Male Banana Plug / Charge Plug – Solder Type, 16A & 50V | Gold-Plated Brass Contact with Beryllium Copper Cage Spring

Product Overview & Connector Construction

The SPIDER Automation 4mm Male Banana Plug / Charge Plug is a solder-type electrical connector designed to provide a secure and convenient connection with compatible 4mm banana sockets. It is suitable for power connections in battery charging arrangements, DC power supplies, electronic test equipment and other electrical systems that use standard 4mm banana-style interfaces.

The plug features a nickel-plated brass plug body with a gold-plated contact surface, as specified in the product details. Its internal contact structure uses a beryllium copper cage spring designed to press outward against the sides of the mating socket. This spring pressure helps improve contact stability and reduces the chance of the plug becoming loose during normal use.

The connector is surrounded by a polyethylene (PE) insulating cover and is available in red and black colours. The colour-coded pair helps users distinguish positive and negative connections in compatible DC power and charging arrangements.

The solder-type termination accepts cables with a diameter of up to 4mm. With a stated rating of 16A and 50V, this banana plug pair is intended for compatible electrical applications operating within those limits. Actual suitability also depends on cable size, soldering quality, socket condition, contact resistance and operating temperature.


Technical Features & Performance Characteristics

  • Standard 4mm Banana Interface: Designed to mate with compatible 4mm female banana sockets used in power supplies, chargers and test equipment.
  • Male Connector Design: Male plug configuration provides a direct connection to compatible female banana terminals.
  • 16A Current Rating: Specified current rating of 16A for suitable electrical applications.
  • 50V Voltage Rating: Specified voltage rating of 50V; use within the stated electrical limits.
  • Brass Plug Body: Conductive brass construction provides the main metallic body of the connector.
  • Gold-Plated Contact Surface: Gold plating provides a conductive contact finish and helps resist surface corrosion.
  • Beryllium Copper Cage Spring: Outward spring pressure helps maintain contact with the mating socket and supports a secure connection.
  • Polyethylene Insulation: PE insulating cover surrounds the plug body to provide electrical insulation during use.
  • Up to 4mm Cable Diameter: Accepts compatible cables up to 4mm in diameter through the solder-type connection arrangement.
  • Red and Black Colour Coding: Different plug colours help identify connection polarity in DC applications.

Performance Advantages

  • Secure Socket Engagement: The cage spring presses against the socket walls to help maintain a stable mechanical and electrical connection.
  • Reliable Contact Interface: The gold-plated contact surface supports a consistent connection when used with clean, compatible sockets.
  • Convenient Solder Termination: The solder-type design allows compatible cables to be attached directly to the connector.
  • Polarity Identification: Red and black insulation helps distinguish connections and reduces wiring confusion.
  • Broad Equipment Utility: The 4mm banana interface is useful with compatible laboratory power supplies, chargers and electronic test equipment.
  • Compact Connector Format: The plug design provides a practical connection option for equipment and power wiring that uses 4mm banana sockets.

Industrial, Commercial & Electronics Applications

  • Battery Charging Connections: Suitable for compatible charging setups that use 4mm banana plug interfaces.
  • DC Power Supplies: Connecting power leads to compatible bench power supplies and DC output terminals.
  • Electronics Testing: Providing power connections for electronic test benches and measurement setups.
  • Laboratory Equipment: Connecting compatible instruments and electrical accessories with 4mm banana sockets.
  • Power Cable Assembly: Creating solder-terminated cable connections for compatible electrical equipment.
  • Electronics Development: Supporting prototyping and testing arrangements that use standard 4mm banana connectors.
  • Electrical Maintenance: Replacing or assembling compatible banana plug connections during equipment servicing.

Package Contents

  • 1 Pair × 4mm Male Banana Plug / Charge Plug (Solder Type)
  • Colour Combination: 1 Red Plug + 1 Black Plug

Product Specifications

Parameter Specification
Product Name 4mm Male Banana Plug / Charge Plug
Connector Gender Male
Plug Type 4mm Banana Plug
Termination Type Solder Type
Current Rating 16A
Voltage Rating 50V
Contact Material Brass
Contact Plating Gold
Plug Body Plating (Description) Nickel-plated brass body, with gold-plated contact surface as specified
Spring Material Beryllium Copper
Contact Structure Cage Spring
Cover Material Polyethylene (PE)
Colour Red and Black
Maximum Cable Diameter Up to 4mm
Package Quantity 1 Pair (2 Plugs)
Shipping Weight 0.005kg
Shipping Dimensions 9 × 8 × 4cm

Installation & Usage Recommendations

  • Select a Compatible Cable: Use a cable with an outer diameter of no more than 4mm and suitable conductor capacity for the intended current.
  • Prepare the Cable: Strip the cable insulation carefully to expose the conductor required for the solder termination.
  • Make the Solder Connection: Solder the conductor securely to the connector’s termination point, avoiding excess solder that could interfere with assembly.
  • Observe Polarity: Use the red and black plugs consistently for the intended positive and negative connections.
  • Check Socket Compatibility: Confirm that the mating equipment uses a compatible 4mm female banana socket.
  • Inspect Before Use: Check the solder joint, insulation and spring contact for damage or looseness before connecting the plug to powered equipment.
  • Stay Within Ratings: Do not exceed the specified 16A current and 50V voltage ratings. Ensure the cable and mating equipment are also appropriately rated.

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