RH7083B-3.5-21/927368-1 12 V / 24 V, 8 Position, Automotive Housing for Female Terminals

Detailed Product Description

The RH7083B-3.5-21/927368-1 is a high-current, non-sealable 8-position automotive housing connector engineered for 12V and 24V wire-to-board and wire-to-wire applications. This rectangular connector is specifically designed for 2.8mm female receptacle terminals with an industry-leading 30A maximum current rating per contact. Featuring a distinctive brown PA66 housing, keying code D, 2-row configuration, and locking lance primary retention, this connector delivers exceptional power transmission capability in demanding commercial vehicle, truck, bus, and industrial equipment applications across an extreme temperature range of -40°C to 130°C.

Product Type Features

This connector features a rectangular shape, providing efficient space utilization and ease of handling during harness assembly. It is a non-mixed, non-hybrid connector, meaning all 8 positions accept identical 2.8mm female receptacle terminals, simplifying inventory management and assembly processes. As a housing for female terminals, it is designed to mate with corresponding male terminal housings or headers. The connector is non-sealable (Sealable: No) , making it suitable for interior, under-dash, or dry underhood environments where moisture ingress is not a primary concern.

The primary locking feature is Locking Lance. A locking lance is a flexible plastic beam molded into the housing that engages with a feature on the terminal to retain it. This is a proven, reliable retention mechanism widely used in automotive connectors. The connector system supports both wire-to-board and wire-to-wire configurations, offering maximum application flexibility. The connector terminates to wire and cable, making it versatile for harness assembly.

Configuration Features

The housing provides 8 positions arranged in 2 rows (4 positions per row). This 2x4 configuration offers a balanced, low-profile design that is easy to handle and route in tight spaces. The compact width of only 13.8mm makes this connector particularly suitable for space-constrained installations.

Body Features

The primary product color is Brown. This distinctive brown housing provides immediate visual identification on the assembly line and during service, reducing the risk of mismating with other connectors. Brown is commonly used in commercial vehicle applications to denote specific circuit functions or voltage ratings.

Contact Features – 30A High Current Capacity

The housing accepts receptacle-type contacts (female terminals) with a contact size of 2.8mm. The mating tab width is precisely 2.8 mm (0.11 in) , a widely used standard in automotive power connectors. The maximum contact current rating is 30A per contact – this is an exceptional current rating for a 2.8mm contact system, placing this connector in the high-power distribution category.

Mechanical Attachment

Mating alignment is provided with a keyed alignment type. Keyed connectors use asymmetric plastic features that physically prevent incorrect mating or cross-mating with connectors having different keying codes. The keying code D feature ensures proper orientation with matching receptacles.

Terminal Position Assurance (TPA) is not provided (No) . Without TPA, proper terminal insertion relies on the locking lance primary locking feature. Installers should ensure terminals are fully seated until the locking lance engages with an audible or tactile click.

Strain relief is not provided (Without) – for high-vibration applications common in heavy-duty vehicles, external strain relief such as cable ties, conduit, or heat shrink boots is recommended.

The connector mounting type is Cable Mount (Free-Hanging) , offering maximum flexibility for harness assembly without requiring panel or PCB mounting.

Housing Features – PA66 Material

The housing is manufactured from PA66 (Polyamide 66/Nylon 66) . PA66 is a high-performance engineering plastic offering exceptional properties for demanding power connector applications:

Higher melting point than PA6 or PBT – maintains structural integrity at 130°C maximum operating temperature

Excellent mechanical strength and stiffness – resists deformation under high insertion forces

Superior heat aging resistance – maintains properties after extended exposure to elevated temperatures

Good chemical resistance – withstands automotive fluids including oil, fuel, coolant, and road salts

Low creep – maintains terminal retention force over time and temperature cycling

High impact resistance – durable in high-vibration heavy-duty vehicle environments

PA66 is the material of choice for underhood and high-temperature automotive connector applications.

The centerline (pitch) between adjacent contacts is 5.08 mm (0.2 in) . This 5.08mm (0.2 inch) pitch provides:

Ample electrical spacing – critical for 24V systems and high current (30A) to prevent arcing

Sufficient material between cavities – maintains housing strength under thermal and mechanical stress

Accommodates larger wire gauges – necessary for 30A current (typically 12-14 AWG)

Industry standard power connector pitch – compatible with widely available tooling

Dimensions – Compact High-Power Design

Connector Height: 23 mm (0.906 in)
Product Length: 28.8 mm (1.134 in)
Product Width: 13.8 mm (0.543 in)
Row-to-Row Spacing: 5.08 mm (0.2 in)

Despite its impressive 30A current rating, the RH7083B-3.5 features an exceptionally compact form factor. At only 13.8mm wide (approximately 0.54 inches), this is one of the narrowest 8-position high-current connectors available. The 23mm height provides a low profile suitable for tight spaces behind dashboards, under seats, or within equipment enclosures. The 28.8mm length accommodates the locking lance retention mechanism and keying features. The row-to-row spacing matches the contact pitch at 5.08mm, creating a consistent symmetrical grid.