SB50 with 3 Pin Charging Socket

The CHARGING SOCKET [QY SB 50+3 PIN] is a high-current power inlet assembly engineered for electric vehicles, high-capacity battery packs, and commercial e-mobility platforms. Combining an SB50 high-amperage interface with a standardized 3-pin auxiliary charging socket, this unit provides a stable, low-resistance bridge between external charger outputs and the vehicle’s onboard battery management system.

Built with a rugged, fire-retardant ABS enclosure and heavy-gauge copper alloy contacts, the connector supports continuous current loads up to 50 Amps and operating voltages up to 600V AC/DC (with primary EV operating sub-circuits at 12V to 60V DC). Its genderless mating profile, color-coded keying, and panel-mount flange simplify installation, reduce connection wear, and prevent accidental mismating during daily charging cycles.

Key Features

• Dual SB50 + 3-Pin Configuration: Integrates high-current SB50 power contacts with a 3-pin charging port into a single panel-mount socket assembly.
• 50A High-Current Capacity: Rated for continuous currents up to 50 Amps, accommodating high-power battery chargers and fast-charge loops.
• Genderless Mating Design: Mechanical SB50 housing layout enables universal mating with standard SB50 plug connectors, simplifying field servicing.
• Durable & Thermal Resistant: Constructed from flame-retardant thermoplastic materials designed to withstand ambient operating temperatures from -20°C to 105°C.
• Heavy-Gauge Wire Interoperability: Terminal lugs accept heavy-gauge copper conductors from 16 AWG up to 6 AWG.

1x CHARGING SOCKET [QY SB 50+3 PIN] Assembly

High-Current Copper Terminal Contacts (heavy-duty crimp/solder lugs for main power lines)

Suitable Vehicle Types & Applications

• Electric Scooters & E-Bikes: High-capacity charging port for high-range 48V–60V electric two-wheelers.
• Commercial E-Rickshaws & L3/L5 Fleets: Heavy-duty charge receptacle designed for daily fast-charging in commercial delivery and transport vehicles.
• Custom EV Battery Packs & Industrial Equipment: Standardized high-amperage bulk charge inlet for custom lithium-ion battery modules and mobile equipment.

System & Electrical Compatibility

• Wide 12V–60V DC Sub-Circuits: Integrates into primary charging loops fed by external 12V–60V DC EV fast chargers or standard off-board power supplies.
• Universal SB50 Plug Interoperability: Mates cleanly with all industry-standard SB50 cable plugs and 3-pin charger connectors.

1. Isolate Power & Cut Mounting Cutout:

Turn off the ignition, trip the main DC circuit breaker, and disconnect the battery pack main leads. Prepare a clean panel cutout on the vehicle frame/housing matching the socket flange footprint.

Verification: Test with a multimeter across the power supply wires to verify zero live voltage is present.

2. Mount Charging Socket to Frame:

Insert the CHARGING SOCKET [QY SB 50+3 PIN] into the panel cutout and secure the mounting flange tightly using the included screws and locking hardware.

Verification: The socket body sits completely flush against the mounting panel without mechanical movement or flex.

3. Crimp & Connect Wire Leads:

Strip 10mm of insulation from 16 AWG to 6 AWG copper supply wires. Crimp or solder the copper terminals onto the stripped wire ends, and secure them into the socket terminals following correct polarity (+ and -).

Verification: Terminal lugs are tightly fastened with zero exposed bare strands, and correct positive/negative polarity is confirmed.

4. Reconnect Battery & Verify Charging Function:

Reconnect the main battery terminals, reset the circuit breaker, and plug in the charger cable. Confirm charging status on the dashboard or charger LED indicator.

Verification: The vehicle battery charges continuously at 50A rating with zero excess heating across terminal connections or plug pins.

Power Isolation: Always turn off the ignition, disconnect external charging cables, and trip the circuit breaker before performing maintenance on socket terminals.

Contact Inspection: Regularly inspect the internal copper contacts for pitting, dirt accumulation, or oxidation; clean with an electrical contact cleaner or dry lint-free cloth.

Fastener Tightness: Periodically check mounting flange screws and terminal wire connections to ensure road vibration has not loosened the electrical contacts.