Industrial Waterproof SP21 4 Pin Flange Connector

LD20/SP20 Industrial Flange Connector Dimensions and Specs

SP21 4-Pin Flange Connector Overview

The Industrial Waterproof SP21 4 Pin Flange Connector is a rugged circular connector designed for secure panel-mounted power or signal connections in demanding industrial environments. With a reinforced flange mounting structure and reliable sealing design, it provides stable electrical performance while protecting against water, dust, and mechanical stress.

Engineered for fixed installation applications, the SP21 flange connector ensures firm positioning on equipment panels, reducing movement and maintaining consistent connectivity during long-term operation. Its 4-pin configuration is commonly used for balanced power distribution or multi-signal transmission systems.

Designed for Secure Panel Installation

The flange mounting structure allows the connector to be firmly fixed to enclosures or control panels, improving connection stability and simplifying equipment integration. This makes it particularly suitable for systems requiring reliable external interfaces.

Key functional advantages include:

• 4-pin configuration for power or signal transmission
• Flange panel mount design for stable installation
• IP68 waterproof and dustproof protection
• Strong mechanical structure for industrial durability
• Secure locking system to prevent loosening
• Reliable performance in outdoor and harsh environments

Installation & Configuration Flexibility

The SP21 flange connector is designed to support various equipment installation requirements:

• Panel mount flange connection structure
• Solder or crimp termination options
• Compatible with different cable sizes
• Optional protective caps and sealing accessories
• Available in multiple pin configurations across the SP21 series
• OEM customization for mechanical and electrical specifications

This flexibility allows easy integration into both new equipment and retrofit projects.

Typical Applications for SP21 Flange Connector

The Industrial Waterproof SP21 4 Pin Flange Connector is widely used in:

• Industrial machinery and automation systems
• Outdoor electrical control cabinets
• Power distribution equipment
• LED lighting and display systems
• Marine and transportation equipment
• Renewable energy and environmental systems

Structural Reliability & Production Capability

For flange-type connectors, installation stability and sealing performance are critical. Our manufacturing process focuses on maintaining dimensional accuracy in the flange interface and ensuring consistent sealing pressure between the connector and equipment panel.

We emphasize:

• Precision mold and machining control for flange alignment
• Stable gasket compression for reliable waterproof sealing
• Consistent assembly standards across production batches
• Mechanical durability verification for long-term installation

This ensures that every SP21 flange connector delivers dependable performance in real industrial installation conditions.

Selection Considerations for Your Application

When evaluating the SP21 4-pin flange connector for your project, consider the following decision points:

• Mating interface: Confirm the mating plug type and locking mechanism required for your panel design.
• Electrical load: Verify that the connector's current and voltage ratings match your application's requirements.
• Cable preparation: Determine the cable outer diameter and conductor size to ensure proper termination and sealing.
• Environmental exposure: Assess whether the IP68 rating meets your outdoor or washdown requirements.
• Panel thickness: Check the flange mounting dimensions against your enclosure panel thickness.

Application Boundaries

The SP21 flange connector is well-suited for fixed installations requiring waterproof protection. However, it may not be the optimal choice for applications involving frequent mating cycles, extreme temperature ranges beyond the specified limits, or installations requiring a quick-disconnect coupling. For such requirements, consider alternative connector series better matched to those conditions.

Inquiry Checklist

To receive an accurate quotation and configuration recommendation, please provide the following information:

• Required pin count and gender (male/female)
• Mating connector type and locking style
• Cable outer diameter and conductor size
• Electrical load (current and voltage)
• Operating environment and IP rating requirement
• Panel mounting hole dimensions
• Order quantity and target delivery schedule

For related flange connector options, see the LD20/SP20 Industrial Flange Connector Dimensions and Specs. For a broader selection, browse the Waterproof Connectors catalog.