Your house wiring predates mandatory RCDs. Or you're running a power tool in the shed off an outdoor socket that has zero protection. One slip, one wet day, one bad connection and it's not a 'oops' moment.
The Jaycar MS4013 is a portable RCD — a safety switch you plug between your device and the wall. It cuts the power in a fraction of a second if it detects a fault current leaking to ground. That's the difference between a shock and a hospital visit.
It's rated 10A at 240V. There's a test button so you can confirm it's actually working, and a reset button once a trip has occurred. You plug it in, you plug your tool or appliance into it, and you're protected.
This is not a substitute for fuses, circuit breakers, or common sense around mains electricity. Wiring, leads, and outlets still need to be in safe condition. But as an extra layer on an unprotected socket? It's the cheapest insurance you'll ever buy.
Add to cart. If your house doesn't have RCDs yet, this is the first thing to grab before that next outdoor job
| brand | JAYCAR |
| category | ELECTRONICS & COMPONENTS |
| subcategory | POWER & BATTERIES |
| rrp | 44.93 |
| rated_current_amps | 10 |
| rated_voltage | 240V |
| test_button | 1 |
| reset_button | 1 |
| type | Portable RCD (safety switch) |
| outlets | 1 |
