RH7083-3.5-21/927365-1 12 V / 24 V, 8 Position, Automotive Housing for Female Terminals

Detailed Product Description

The RH7083-3.5-21/927365-1 is a high-current, non-sealable 8-position automotive housing connector engineered for 12V and 24V wire-to-board and wire-to-wire power applications. This rectangular connector is specifically designed for 2.8mm female receptacle terminals with an exceptional 30A maximum current rating per contact. Featuring a natural PA housing, keying code A, 2-row configuration, locking lance primary retention, and Terminal Position Assurance (TPA) , this connector delivers robust power transmission capability in demanding commercial vehicle, truck, bus, and industrial equipment applications across an extreme temperature range of -40°C to 130°C. The circuit application is specifically designated for Power, confirming this connector is optimized for high-current power distribution.

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 proven retention mechanism is widely used in automotive power connectors for its reliability and simplicity. 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 such as behind dashboards, under seats, or within equipment enclosures.

Body Features – Natural Housing for Unpainted Applications
The primary product color is Natural (uncolored/base PA material). This natural housing provides a raw, uncolored appearance that is useful for applications where color coding is not required or where secondary painting or labeling will be applied. Natural housings are also preferred in certain industrial applications for raw material traceability.

The connector and keying code is A, indicating a specific keying configuration to prevent mismating with other connectors in the same family. Keying code A is typically the primary or default orientation in multi-keying systems, ensuring broad compatibility with standard mating connectors.

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 exceptional current rating places this connector in the high-power distribution category.
The 30A current rating enables this connector to handle demanding power applications including:
Heavy-duty lighting circuits (headlamps, work lights, warning beacons)
Electric motors (HVAC blowers, cooling fans, actuators, window lift motors)
Solenoids and power relays
Power distribution junctions and fuse box connections
Battery charging and main power feed circuits
Trailer power connections (12V or 24V systems)
Commercial vehicle auxiliary power outlets
Mechanical Attachment – With TPA (Terminal Position Assurance)
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 A feature ensures proper orientation with matching receptacles.

Terminal Position Assurance (TPA) is provided – Yes. This is a critical differentiator for this connector model. TPA is a secondary locking device that independently locks terminals into the housing after initial insertion. TPA provides several essential benefits for power applications:

Prevents terminal back-out – stops terminals from loosening or disengaging due to vibration, thermal cycling, or cable pull forces

Visual confirmation – provides a clear visual indicator that all terminals are fully seated and locked

Redundant retention – adds a secondary retention mechanism beyond the primary locking lance

Safety critical – required for high-reliability applications subject to shock, vibration, or high mating cycles

Inspection friendly – easy to verify during quality control checks

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 strongly recommended.

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

Housing Features – PA Material

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

Good mechanical strength and toughness – resists impact and crack propagation

Good flexibility – less brittle than PBT, more resistant to housing damage during terminal insertion

High heat resistance – maintains mechanical properties at 130°C maximum operating temperature

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

Wear resistance – maintains dimensional stability under repeated mating cycles

Natural color option – allows raw material traceability and secondary processing

The centerline (pitch) between adjacent contacts is 5.08 mm (0.2 in) . This 5.08mm pitch is an industry standard for power connectors and provides:

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

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

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

Compatibility with standard tooling – widely available crimp and insertion tools

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) in)