JCB 47401 Master Battery Disconnect Key – Save Your Juice
Ever turned up to site on a Monday morning only to find the 3CX has a flat battery? You need the JCB 47401 Isolator Key. This heavy-duty master switch key is designed to sit in the battery disconnect housing, allowing you to kill the electrical circuit completely when the machine isn't in use.
Why You Need This (Aside from Site Security)
- Anti-Theft: Pull the key out and the machine is a 7-ton paperweight. It’s the simplest way to keep your gear safe.
- Safety First: Essential for maintenance work to ensure the electrical system is completely dead before you start poking around.
- Standard Fit: Fits the master isolator switches on almost all modern JCB equipment.
Compatible Equipment
This 47401 isolator key is the standard fit for battery master switches on:
- Backhoes: The 3CX, 4CX, and 5CX range.
- Excavators: JS Series, 801, 803, and MIDI excavator ranges.
- Telehandlers: All JCB Loadall models (531, 535, 540, etc.).
- Fastrac: Fits many JCB Fastrac tractor isolation switches.
- Dumpers & Rollers: Fits 1T through to 9T site dumpers.
Technical Specs
- Part Number: 47401 / 701/47401 / 701/M8031
- Construction: Heavy-duty polymer head with a precision metal blade.
- Application: Battery Isolation / Master Disconnect Switch.
Don't get caught with a dead battery and a deadline. Keep a spare 47401 in your pocket!
Tags: JCB, 47401, Battery Isolator, Disconnect Key, Site Safety, Backhoe.

