SurLok Connector-120A (Red) – Suits Nexus R3 / PD16

SurLok Connector-120A (Red): High-Current Power Delivery

The SurLok Connector-120A (Red) is the dedicated high-current positive interface for the **Haltech Nexus R3** and **Nexus PD16** units. In any PDM-based electrical architecture, the main supply line from the battery is the single most critical cable. It must carry the total current load of the entire vehicle—fuel pumps, fans, ignition, and lights—without voltage drop or thermal buildup. The SurLok system replaces traditional bolted ring terminals with a modern, locking, tool-free connection standard that enhances both safety and reliability. The **Red** housing indicates its use for **Positive (+12V / +24V)** supply lines, preventing dangerous polarity reversal accidents during installation and maintenance.

Engineering for Power Density

Designed to handle a continuous load of 120 Amperes, this connector utilizes high-conductivity alloy contacts with a specially designed spring mechanism that ensures consistent contact pressure over thousands of mating cycles. The "RADSOK" (Radial Socket) technology often employed in this style of connector provides a high surface area contact, keeping resistance in the micro-ohm range. This is vital for the Nexus R3 and PD16, as any resistance at the main input would result in significant heat and voltage sag across the entire system. The connector housing is IP67 rated, providing a waterproof seal that protects the high-current terminal from corrosion, which is a leading cause of electrical fires in motorsport.

Operational Benefits

• Polarity Safety: Color-coded Red to clearly identify the 12V+ Main Feed.
• Secure Locking: Features a positive retention latch that emits an audible click, ensuring the cable cannot vibrate loose.
• 360-Degree Rotation: Once mated, the connector allows for cable rotation, relieving strain on stiff heavy-gauge battery cables.
• Touch-Safe: The plastic housing shrouds the live terminal, preventing accidental short circuits with wrenches or chassis components.

Fitment and Compatibility

This connector is the standard input connector for the **Nexus R3** VCU and the **Nexus PD16** PDM.

• Device: Nexus R3, Nexus PD16.
• Function: Main Battery Positive (+) Input.
• Wire Capacity: Suits 25mm² (4 AWG) to 35mm² (2 AWG) cable.

Technical Specifications

Summary & What’s Included

The HT-030032 is essential for supplying power to your Nexus system. Do not compromise your main feed with inferior connectors.

Includes:

• 1 x 120A Red SurLok Connector Housing
• 1 x Crimp Contact Lug