Description Related Cases Related Application Product Catalog Reviews

SP21 IP68 Waterproof Circular Connector for Smart Control Boxes

MOQMOQ >200
PricePrice
>Number Of CoresNumber Of Cores 3-12Pins
Contact DiameterContact Diameter(mm) 1.0 mm - 3.0mm
IP RatingIP Rating IP68
Shell MaterialShell Material PC/PA66
Temperature RangeTemperature Range -40℃ ~ +85℃
TerminationTermination Solder
Rated CurrentRated Current(A) 5A-30A
Rated VoltageRated Voltage(Ac.V) 400V-500V
Test VoltageTest Voltage(Ac.V)1Min 1200V-1500V
Insulation ResistanceInsulation Resistance (MΩ) 2000MΩ
Contact ResistanceContact Resistance (MΩ) ≤5MΩ
CertificationCertification CE, RoHS,BASCI,ISO9001
Get Quote

SP21 IP68 Connector for Smart Electrical Control Boxes

The SP21 IP68 connector is a rugged waterproof circular connector designed for reliable electrical connections in smart electrical control boxes and automation control systems. With its strong sealing performance and durable construction, it ensures stable operation even in demanding industrial environments.

Reliable Waterproof SP21 Connector for Control Equipment

Featuring an IP68 waterproof rating, the SP21 connector effectively protects internal contacts from dust, moisture, and harsh environmental conditions. This makes it highly suitable for long-term use in intelligent control equipment and outdoor electrical installations.

Durable Circular Connector for Industrial Control Systems

The SP21 circular connector is engineered with a robust structure that provides excellent mechanical strength and vibration resistance. It is widely used in smart control cabinets, automation equipment, industrial electronics, and electrical control boxes where stable and secure connections are essential.

SP21 IP68 waterproof circular connector for smart electrical control boxes

Key Selection Considerations for the SP21 Connector

When evaluating the SP21 connector for your control system, focus on these decision points:

  • Pin Configuration: Available in 2 to 12 pin options, allowing you to match the connector to your specific circuit requirements.
  • Gender Options: Offered in both male and female versions to suit your cable and panel mounting needs.
  • Material Compatibility: The PC/PA66 housing and gold-plated brass contacts provide a balance of durability and signal integrity.
  • Environmental Protection: The IP68 rating ensures protection against dust ingress and prolonged immersion, making it suitable for demanding applications.

Application Scope and Boundaries

The SP21 connector is well-suited for smart control cabinets, automation equipment, and outdoor electrical installations where moisture and dust resistance are critical. However, it is not intended for high-voltage power distribution or applications requiring frequent mating cycles beyond its rated design. For high-vibration environments, verify that the connector's locking mechanism meets your specific mechanical requirements.

Installation and Configuration Guidance

To ensure a proper fit, confirm the following details before ordering:

  • Required pin count and gender (male or female) for your application.
  • Cable diameter and termination method (solder, crimp, or screw) compatible with your wiring.
  • Mounting style—panel mount, cable mount, or inline—based on your enclosure design.
  • Specific environmental conditions, such as temperature range and exposure to chemicals, to validate the housing material suitability.

For a broader range of industrial interconnection options, review the 12G Series Circular Connectors or the LD20/SP20 Industrial Flange Connector for related solutions.

Inquiry Checklist for Accurate Quoting

When submitting an inquiry, include the following information to receive an accurate quotation and technical confirmation:

  • Exact model number and series (SP21).
  • Number of cores and gender required.
  • Desired cable length and wire gauge.
  • Mounting configuration and any specific housing color or marking needs.
  • Application environment details (e.g., outdoor, chemical exposure, temperature extremes).

For further assistance in selecting the right connector for your smart electrical control box, contact our engineering team with your project specifications.

Item Parameters
Number of Cores 2-12 Pin
Gender Male / Female
Housing Material PC / PA66
Cores Material Brass Plated with Gold
Insulator Material PPS
Locking System Screw Locking
Temperature Range -40°C to +85°C
Rated Current (A) 5A - 30A
Rated Voltage (AC.V) 400V - 250V
Test Voltage (AC.V) 1 Min 1200V - 1500V
Insulation Resistance (MΩ) 2000 MΩ
Contact Resistance (MΩ) ≤5 MΩ
Termination Solder

Related Resource


SP21 IP68 Waterproof Circular Connector for Smart Control BoxesRelated Cases
SP21 IP68 Waterproof Circular Connector for Smart Control BoxesRelated Application
GX16 Connectors for PLC-Based Control Panels
GX16 Connectors for PLC-Based Control Panels
GX16 connectors ensure stable signal transmission and reliable power distribution in PLC-based control panels, resisting vibration and dust in industrial environments.
GX12 Connectors for CNC Router Signal and Power Links
GX12 Connectors for CNC Router Signal and Power Links
GX12 connectors ensure reliable signal and power transmission in CNC routers, supporting stepper motors, limit switches, and control panels under vibration and dust.
MIL-DTL-5015 Connectors for Industrial Motor Control Systems
MIL-DTL-5015 Connectors for Industrial Motor Control Systems
Discover how MIL-DTL-5015 connectors ensure reliable power and signal transmission in industrial motor control systems under demanding conditions.
GX20 Connectors for Automated Packaging Control Systems
GX20 Connectors for Automated Packaging Control Systems
GX20 circular connectors provide secure threaded coupling and high current capacity for motors, sensors, and control units in automated packaging lines.

Customer Reviews

   

Score
 Remove

Review Title

Review Text

   M8 5-Pin Connector Long-Term Dependability


MapleNavigator  2026-02-04

Learn how M8 5-pin connectors sustain performance across repeated mating cycles, ensuring long-term dependability for industrial applications.
   M8 4-Pin Connector with Secure Locking


GreenVoyager  2026-02-04

Discover the M8 4-pin connector with effortless plug-in and secure locking for reliable industrial connections. Ideal for compact automation applications.
   Stable Power and Signal M8-3 Pin Connector


OceanBirch  2026-02-04

This M8-3 pin connector delivers stable power and signal transmission, ensuring uninterrupted performance for industrial applications.
   M8 3-Pin Connector with Smooth Alignment and Secure Fit


 2026-02-04

Discover the M8 3-pin connector with precise pin alignment for reliable electrical contact and a secure fit in industrial applications.
Need Help?
Please leave your contact information to get our latest catalog
Get In Touch Now >
KMYD Connectors

Tel: +8619924482730

Email: info@kmydconnector.com

MP/WhatsApp: +8619924482730

Manufacturer Address:Baoan District, Shenzhen City, Guangdong Province,China

NEW KEYWORD

About Us

Products

Information