Diagrama Electrico Excavadora 330D CAT

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Pressure Symbol

Harness And Wire Electrical Schematic Symbols
Symbols

RENR9587-03 October 2008

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Symbols And Definitions Fuse - A component in an electrical circuit that will open the circuit if too much current flows through it. Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The circle indicates that the component has screw terminals and a wire can be disconnected from it. Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.). No circle indicates that the wire cannot be disconnected from the component.

RENR9587-03 VOL 1 of 2
Printed in U.S.A.

Temperature Symbol

Level Symbol

Flow Symbol

Circuit Breaker Symbol

Ground (Wired): This indicates that the component is connected to a grounded wire. The grounded wire is fastened to the machine.

Ground (Case): This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.

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Reed Switch: A switch whose contacts are controlled by a magnet. A magnet closes the contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.

Sender: A component that is used with a temperature or pressure gauge. The sender measures the temperature or pressure. Its resistance changes to give an indication to the gauge of the temperature or pressure.

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Relay (Magnetic Switch): A relay is an electrical component that is activated by electricity. It has a coil that makes an electromagnet when current flows through it. The electromagnet can open or close the switch part of the relay.

330D and 336D Excavator Electrical System
330D: NBD1-UP MAG1-UP B6H1-UP EAH1-UP FFK1-UP JLP1-UP EDX1-UP MEY1-UP 336D: PRF1-UP MPL1-UP D3P1-UP JBT1-UP KKT1-UP M4T1-UP

Solenoid: A solenoid is an