4-Pin Unsealed 6.3mm Male Connector – Motorcycle & Automotive High-Current Harness

A 4-pin unsealed 6.3mm pitch male connector for motorcycle, scooter, and automotive high-current harness applications. The 6.3mm pitch (Faston / Metri-Pack 630 series) is rated at up to 20A per pin – the standard for relay outputs, fan motor feeds, and high-draw accessory circuits in protected, dry locations.

Key Specifications

• Pin Count: 4
• Gender: Male plug (with wire)
• Terminal Pitch: 6.3mm (Faston / Metri-Pack 630)
• Seal Type: Unsealed (for dry, protected environments)
• Wire Gauge: 18 AWG (0.5 mm²)
• Wire Length: 5.5 inches (140 mm)
• Housing Material: PA66 glass-filled nylon
• Terminal Material: Copper alloy, tin-plated
• Current Rating: Up to 20A per pin
• Voltage Rating: 12V / 24V DC

Applications

• Relay socket wiring – 4-pin relay harness connections (ISO 280 relay format)
• Motorcycle main power distribution harness
• Cooling fan relay output connector
• Fuel pump relay harness connection
• High-draw accessory circuits (winch, compressor, auxiliary lighting)
• Automotive fuse box output connectors

Current Capacity Reference

• 1.5mm Micro-Pack 100: 7.5A/pin – sensors
• 2.8mm Metri-Pack 280: 13A/pin – injectors, actuators
• 6.3mm Faston / Metri-Pack 630 (this): 20A/pin – relays, fans, power feeds
• 7.8mm Yazaki: 30A/pin – main power, starters

Frequently Asked Questions

Q: Is this connector compatible with ISO 280 relay sockets?
A: Yes. The 6.3mm Faston terminal is the standard for ISO 280 automotive relays (the common 4-pin and 5-pin relay format). This connector is compatible with standard ISO 280 relay socket harnesses.

Q: What wire gauge should I use for a 20A circuit?
A: Use a minimum of 14 AWG (2.0 mm²) for 20A continuous load. The pre-installed 18 AWG wire is suitable for circuits up to 10A.

Q: What crimping tool is needed?
A: Use a ratchet crimper rated for 14–16 AWG – Engineer PA-20 or equivalent heavy-duty ratchet crimper for 6.3mm Faston terminals.

Package Contents

1 × 4-Pin Male Connector with 18 AWG wire and terminal insert