Description
Overview:
The CAT Master Disconnect Key is a robust metal replacement key for battery isolation switches used on heavy plant and agricultural machinery. It is designed to engage the master (battery) disconnect switch found on many Caterpillar machines, as well as selected Case diggers and IH tractors that use the same style of switch. Built for repeated site use, it provides a secure, positive fit to safely isolate or restore battery power during maintenance, storage, or transport. Identified by Manufacturer Part Number (MPN) 8H-5306, it is a practical, direct-fit solution for operators who need reliable electrical isolation on machines such as the Caterpillar 313B and 314C. The key's durable construction and straightforward handling help keep equipment safe, compliant, and ready for work.
Key Features:
- Durable metal construction for long service life in harsh on-site conditions
- Direct replacement for the original CAT master disconnect key (MPN 8H-5306)
- Made to meet OEM-fit expectations for a secure, positive engagement with the switch
- Simple push-in/pull-out operation for quick electrical isolation or reconnection
- Helps protect electrical systems during servicing, transport, and storage
- Reliable fit reduces the risk of arcing and poor contact at the switch
- Compact and easy to handle with good grip for gloved use
- Suitable for a wide range of Caterpillar equipment and selected Case/IH machines using compatible disconnect switches
- Cost-effective way to keep critical safety equipment operational
- Supports safer lock-out procedures and reduces unintended battery drain
Typical Applications:
Used for isolating battery power on excavators, crawlers, loaders, and tractors before maintenance or repair, when parking plant overnight, during transport, or in storage. Common across construction sites, agricultural operations, and industrial facilities where a dependable master switch key is required.
Also known as:
Battery isolator key, master switch key, battery cut-off key, isolation key, kill switch key, battery disconnect key.
Fits Models:
313B, 313D, 313D2, 313D2 LGP, 313D2LGP, 314C, 314D, 314D CR, 314DCR
Alternate Part Numbers:
8H-5306, 7N0718, 8H5306, 8398
Product Specifications
| L&S Part No. | CAT 2P |
|---|---|
| OEM No. | 8H-5306 |
| Unit of Sale | 1 |
| Applications | 313B, 313D, 313D2, 313D2 LGP, 313D2LGP, 314C, 314D, 314D CR, 314DCR |
| Machine Type | Excavators, Tractors |
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