Firduo 120A High Current and High Voltage Waterproof Connector for Efoil & Surfboard & Ebike

🔌 120A. IP68. Panel-Mount & Enclosure-Ready.

The Firduo 120A High Current Waterproof Connector is a heavy-duty IP68-rated connector system designed for panel-mount and enclosure installations in electric hydrofoil, eFoil, electric surfboard, e-bike, and marine power systems. Using "Sprtac" series wire spring technology, the connector delivers large current carrying capacity with reliable, low-resistance contact — critical for sustained 120A loads.

Available in two mounting configurations: Round (Nut Socket / TP ZM) for cylindrical panel cutouts, and Square (TP ZF) for rectangular panel or enclosure installations. Each configuration offers two variants (① and ②) for different wire entry or orientation options. The threaded anti-loose connection structure prevents accidental disconnection under vibration and mechanical stress.

⚡ Key Features

• ✅ IP68 Waterproof — fully sealed for continuous underwater operation in saltwater and freshwater
• ✅ 120A High Current Rating — handles sustained high-current loads for eFoil, hydrofoil, and marine ESC connections
• ✅ "Sprtac" Wire Spring Technology — large current carrying capacity with reliable, low-resistance contact
• ✅ Threaded Anti-Loose Structure — secure connection that resists vibration, impact, and mechanical stress
• ✅ Panel-Mount & Enclosure-Ready — Round (TP ZM) and Square (TP ZF) configurations for different installation requirements
• ✅ Multiple Installation Methods — adapts to cylindrical or rectangular panel cutouts and enclosure walls
• ✅ High-Performance Plastic Shell — meets harsh environmental requirements including saltwater, UV, and temperature extremes
• ✅ Vibration & Impact Resistant — maintains connection integrity under dynamic loads of water sports
• ✅ Crimping Terminal Technology — reliable wire-to-terminal connection with claw-positioning for fast, accurate assembly

📋 Full Specifications

Common Specifications (All Variants)

🔵 Round Socket — TP ZM (Nut Socket / Cylindrical Panel Mount)

The Round TP ZM variant mounts through a circular panel cutout and is secured with a nut from the rear. Ideal for waterproof enclosure walls, board panels, and cylindrical housing installations. Two sub-variants (Round ① and Round ②) offer different wire entry configurations.

🟥 Square Socket — TP ZF (Rectangular Panel Mount)

The Square TP ZF variant mounts through a rectangular panel cutout and is secured with screws or clips. Ideal for flat panel installations, enclosure lids, and rectangular housing cutouts. Two sub-variants (Square ① and Square ②) offer different wire entry configurations.

📦 What's in the Box

• 1× Panel-mount socket (Round TP ZM or Square TP ZF, per selected variant)
• 1× Mating plug connector

⚠️ Cables not included. Ensure wire gauge is rated for required continuous current (typically 6AWG–10AWG silicone wire).. Select Round ① / Round ② or Square ① / Square ② based on your panel cutout shape and wire entry direction.

🔗 Compatible Builds & Recommended Pairings

• eFoil / Electric Hydrofoil — panel-mount battery-to-ESC connection through waterproof enclosure wall
• Electric Surfboard / Jetboard — high-current power connector for waterproof ESC enclosures
• E-Bike / Electric Vehicle — IP68 sealed panel connector for battery compartment access
• Marine ESC / ROV — IP68 sealed for continuous underwater power connections
• Inline Cable Option: Firduo 120A Waterproof Plug Socket (TP ZX) — inline cable-to-cable version of the same 120A connector system
• Higher Current Option: Firduo 120-250A Waterproof Power Connector — for builds requiring up to 250A continuous current
• Lower Current Option: Firduo 50A Self-Locking IP67 Waterproof Connector — for auxiliary circuits and lower-current connections
• Recommended Anti-Spark Switch: Firduo 200A Anti-Spark Switch — pair with this connector to prevent arcing on battery connection

🛠️ Setup Guide

1. Select the correct variant — choose Round ①/② for circular panel cutouts (TP ZM nut socket); choose Square ①/② for rectangular panel cutouts (TP ZF). The ① and ② sub-variants differ in wire entry direction — check the dimension drawings above to confirm which fits your enclosure layout before ordering.
2. Prepare the panel cutout — cut or drill the panel to match the socket's mounting dimensions (refer to TP ZM or TP ZF dimension drawing above). Deburr all edges to prevent seal damage.
3. Select correct wire gauge — for 120A continuous current, use 8AWG silicone wire minimum. 6AWG is recommended for runs longer than 300mm or peak currents above 120A. Ensure the wire OD fits through the connector's cable entry before cutting to length.
4. Thread wire through cable entry first — before attaching the terminal, thread the wire through the connector's cable gland or entry nut. Do not skip it.
5. Welding the terminal — insert the stripped wire end into the terminal barrel and use a high-power welding machine suitable for this terminal size.. A proper welding should be gas-tight with no exposed copper. Pull-test the welding — it should not slip under firm tension.
   
6. Mounting connector terminal nut housing — Tug gently to confirm it is seated. Tighten the cable entry nut to seal around the wire jacket.
   
7. Mount the socket to the panel — for Round (TP ZM): insert through the panel cutout and tighten the rear nut firmly to compress the panel seal. For Square (TP ZF): align with the rectangular cutout and secure with screws per the mounting specification. Ensure the panel seal is fully compressed for IP68 rating.
8. Mate plug and socket — align the mating plug with the panel-mounted socket and engage the threaded anti-loose connection. Rotate clockwise until fully locked. To disconnect, rotate counter-clockwise and pull. Test continuity with a multimeter before applying power.

❓ FAQ

Q1: What is the difference between Round ①/② and Square ①/②, and how do I choose?
The Round variants (TP ZM) mount through a circular panel cutout and are secured with a rear nut — ideal for round holes drilled in enclosure walls or board panels. The Square variants (TP ZF) mount through a rectangular cutout and are secured with screws — ideal for flat panel or enclosure lid installations. Within each shape, ① and ② differ in wire entry direction (different cable gland orientation) — refer to the dimension drawings above to confirm which fits your enclosure layout.

Q2: What is the difference between this connector and the TP ZX Plug Socket?
The TP ZM / TP ZF (this product) are panel-mount connectors — one half is permanently installed through an enclosure wall or panel, and the mating plug connects from outside. The TP ZX is an inline cable-to-cable connector — both halves are on cables with no panel mounting. Choose TP ZM/ZF for enclosure installations; choose TP ZX for inline cable connections.

Q3: Is this connector truly IP68? Can I use it for continuous underwater connections?
Yes. The connector is rated IP68 — fully sealed for continuous underwater operation beyond 1 meter depth. To achieve the IP68 rating, the panel seal must be fully compressed during installation (rear nut or screws fully tightened), the cable entry nut must be fully tightened around the wire jacket, and the wire OD must match the cable entry specification. A loose panel seal or cable gland will compromise the IP68 rating.

Q4: What wire gauge should I use for 120A?
For 120A continuous current, use a minimum of 8AWG silicone wire. For longer cable runs (300mm+) or peak currents above 120A, 6AWG is recommended to reduce voltage drop and heat buildup. Silicone insulation is preferred over PVC for flexibility and heat resistance in eFoil and marine applications. Ensure the wire jacket OD fits through the connector's cable entry before cutting to length.

Q5: Do I need an anti-spark switch with this connector?
Yes — strongly recommended. When connecting a high-current battery to an ESC, the capacitors inside the ESC draw a large inrush current that causes arcing at the connector contacts. This arcing damages the contacts over time and can cause connection failure. The Firduo 200A Anti-Spark Switch eliminates this arcing by pre-charging the ESC capacitors before full current flows through the connector, significantly extending connector service life.