821941 - 7pin SAE plug. (1pc)
Standard 7pin SAE/ADR plug. Commonly used on heavy trucks.
Mates with 820941 7pin socket and compatible with all competitor SAE 7pin sockets.
Ships with wiring diagram.
Specifications / features:
Spring strain relief and hang loop
Corrosion proof alloy housing
Live terminals accept up to 6mm automotive / 10AWG cable
Earth terminal accepts up to 8B&S / 8AWG cable
Floating contacts make for a reliable connection despite regular handling as they tolerate 'wiggling' motion when mating an unmating connections.
Floating contact versus fixed contact:
Left - fixed contact. Right - floating contact.
Floating contacts are designed to be flexable. They handle the inevitable 'jiggling' that accompanies unmating better than fixed or solid contacts.
Fixed contacts eventually become prised apart and lose gripping tension over sucessive mating/unmating cycles to become electrically unreliable.
In floating contacts the spring returns the contact fingers to their original alignment and gripping tension once mated. Consistant gripping tension is
also important for the contacts to remain 'self-wiping' during mating and, therefore, ensuring good electrical contact over time.
A wider finger gap aids in debris displacement and makes for easier cleaning maintainence as well as enhancing contact flexability.
