803605392 horn relay for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name: Horn Relay
Part No.: 803605392
Corresponding Model: JL2B-24
Applicable Model: XCMG ZL50G, ZL50GL Wheel Loader
Type: Electromagnetic switching relay
Installation Position: Electrical control box or relay socket
Function: Small current controls horn high-current circuit on/off
Working Voltage: 24V (subject to actual product)
Mounting Method: Plug-in installation or bolted fastening
Protection Capability: Certain dust and splash resistance
Working Condition: Quarry mining, aggregate yard, heavy earthwork and construction projects

Applicable Scenarios

Widely used in quarry, aggregate yard, and earthwork construction sites with frequent horn warning and obvious vibration. It is a basic relay accessory for ensuring normal horn warning function and protecting horn switch contacts.

Direct electromagnetic switching function protecting horn switch contacts
The relay uses small current to control the horn high-current circuit, preventing large current from directly passing through the horn button and reducing contact burning risk.

Manufactured to OEM electrical parameters for control system match
Relay electrical parameters are designed for the ZL50G/ZL50GL electrical system; it works when inserted into the corresponding relay socket, reducing horn abnormalities from parameter mismatch.

Pin interface matches original relay socket for easy replacement
Pin specifications and arrangement follow the original relay socket design, requiring no circuit or socket modification during replacement and shortening on-site repair time.

Can be stocked with horns, fuses, and related electrical accessories
Can be stocked together with horns (803502413), fuses, wiring connectors, and related accessories for the same model, facilitating complete procurement during electrical signal system maintenance.

FAQ 

Q：Is horn failure always caused by the relay?
A: Not necessarily. Check the horn itself (803502413), horn button, fuses, and wiring connectors first. Inspect the relay for engagement or contact continuity after confirming peripheral circuits and horn are normal.

Q：When does a relay need replacement?
A: Replace when the relay fails to engage causing horn failure, contacts stick causing continuous horn, the coil burns out (abnormal resistance or open circuit), pins corrode, or the housing is damaged.

Q：What to note during horn relay installation?
A: Confirm the relay working voltage and pin arrangement match the original relay socket. Align pins carefully during insertion to avoid bending. Test horn function after installation.

Q：How to maintain the horn relay daily?
A: Regularly check relay pins for corrosion and looseness. Observe whether horn function is normal. Check relay appearance and contact condition during electrical system maintenance, and address abnormalities promptly.