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Waterproof SP Series Circular Connectors for Maritime and Industrial Applications

>Number Of CoresNumber Of Cores 2-32Pin
Contact DiameterContact Diameter(mm) 0.7mm-3.0mm
IP RatingIP Rating IP68
Shell MaterialShell Material PC/PA66
Temperature RangeTemperature Range -30℃ ~ +125℃
TerminationTermination Solder
Rated CurrentRated Current(A) 3A-50A
Rated VoltageRated Voltage(Ac.V) 125V-500V
Test VoltageTest Voltage(Ac.V)1Min 1000V-1500V
Insulation ResistanceInsulation Resistance (MΩ) 2000MΩ
Contact ResistanceContact Resistance (MΩ) ≤10MΩ
CertificationCertification CE, RoHS,BASCI,ISO9001
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SP Series Connectors: Marine-Grade, Corrosion-Resistant Solutions for Maritime Applications

In the unforgiving maritime environment-where saltwater corrosion, constant vibration, extreme temperature fluctuations, and strict safety demands define daily operations—reliable connectivity is the lifeline of marine systems. Our full-range SP Series Connectors are engineered exclusively for marine use, delivering certified durability, rugged waterproof performance, and flexible configurations (including mainstream models like SP22/SP13/SP17/SP21/SP29 with multi-core options) to power critical systems on ships, offshore platforms, and all types of marine vessels.

4Pin Connector


Full Range of SP Series Models & Multi-Core Options

We offer a comprehensive lineup of SP Series connectors, covering diverse models with flexible core count selections to precisely match the needs of every maritime application scenario:
SP13 Series: Core count options: Ultra-compact design, ideal for confined spaces on ships; IP67 waterproof rating and 316L stainless steel shell for superior anti-salt spray corrosion
SP17 Series: Core count options: IP68 high waterproof protection; 360° EMI/RFI shielding to avoid interference from marine radar/communication systems; stable performance in -40℃~+105℃
SP21 Series: Core count options: Heavy-duty anti-vibration structure; enhanced corrosion resistance; supports high-density multi-channel transmission

SP23 Series: Core count options: Balanced power & signal transmission; oil-resistant insulation material; suitable for engine room and on-board equipment cabinet wiring

SP29 Series: Core count options: High current-carrying capacity (up to 15A per core); IP68 high-pressure wash resistance; ideal for large-scale marine equipment and offshore platform integration

Electrical Connector


Why SP Series Connectors Are Trusted for Maritime Use
1. Marine-Specific Durability & Corrosion Resistance
All SP Series models feature PC/PA66 shells, passing 1000+ hours of salt spray testing to effectively resist saltwater erosion, ocean humidity, and chemical corrosion. With IP68 multi-level protection, they shield against seawater intrusion, high-pressure deck washing, and dust accumulation in engine rooms—ensuring stable operation in the harshest marine environments.

SP Plug


2. Reliable Electrical Performance in Extreme Conditions
Designed to adapt to extreme maritime climates, SP Series connectors operate stably from -55℃ (arctic marine routes) to +125℃ (engine room high-temperature zones). They boast ≤15mΩ initial contact resistance and ≥100MΩ insulation resistance, paired with 1500~3000V AC test voltage, guaranteeing zero signal/power loss for critical navigation and control systems.

SP Socket


3. Flexible, Marine-Tailored Design
With 2-32 core options covering everything from small-signal sensors to high-density multi-channel systems, SP Series connectors match diverse maritime device interfaces. They support crimp, weld, and screw termination methods, paired with anti-loosening threaded locking structures to prevent accidental disconnections caused by ship vibration or wave impact—enabling fast and secure on-site assembly.

SP13 Connector


Key Maritime Applications
Navigation & Communication Systems: GPS navigation equipment, marine radar, satellite communication links, VHF radio connections
Engine Room & Propulsion Systems: Main engine control units, fuel system sensors, cooling system monitors, propulsion system signal transmission
Deck & Offshore Equipment: Crane control circuits, winch systems, offshore platform monitoring sensors, deck lighting and power connections
Passenger & Crew Areas: Emergency lighting control, fire alarm sensor links, on-board HVAC systems, entertainment equipment wiring

Trust SP Series for Your Maritime Projects
Every SP Series maritime connector undergoes rigorous pre-shipment testing, including salt spray, vibration, high-temperature, and waterproof validation, ensuring long-term reliability in the harshest marine environments. We offer custom core count and cable length solutions to meet specialized project requirements and dedicated maritime technical support.

Contact our team today to request a custom quote, sample, or technical datasheet, and equip your marine vessels with connectors built for the unique challenges of the sea.

Item

Parameters

Number of Cores

2-32Pin

Gender

Male/Female

Housing Material

PC/PA66

Cores Material

Brass Plated with Gold

Insulator Material

PPS

Locking System

Screw Locking

Temperature Range

-30℃, +125℃

Rated Current (A)

3A-50A

Rated Voltage (AC.V)

125V-500V

Test Voltage (AV.C)1Min

1000V-1500V

Insulation Resistance ()

2000

Insulation Resistance ()

≤10

Termination

Solder


Related Resource


Related Cases
KMYD Connectors KNOWS WHAT YOU NEED,
Waterproof SP Series Circular Connectors for Maritime and Industrial Applications Market Leader!
Related Application

Customer Reviews

   

Score
 Remove

Review Title

Review Text

   Secure Connection


ChromeVoyage  2026-02-04

Once connected, M12 Connectors stay firmly in place.
   Compact Waterproof Connector


NeonNomadX  2026-02-04

SP13 Connectors are lightweight, sealed tightly, and work reliably in outdoor environments.
   Strong Power Handling


UrbanSailor  2026-02-04

M5 Connectors deliver stable power with excellent build quality.
   Durable Outdoor Performance


AmberNotebook  2026-02-04

The SP13 3-pin version resists moisture and dust while keeping a strong connection.
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Email: info@kmydconnector.com

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

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