275a high current battery isolating switch for 12v to 48v systems
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strong 275a battery isolator for rv electrical setups

275A 12V-48V High Current Battery Isolating Switch

4.814 reviewsIn stock SKU sw-iso-275
$22.00inc. GST

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  • Aussie warranty1 year, handled locally
  • Geelong supportReal people, real answers
  • Same day shippingOrder by 3pm AEST
$22.00Ships today by 3pm
Details

The full rundown

A 275A battery isolator switch for campervans, caravans, RVs, boats and off-road builds. One turn cuts the battery off for storage, servicing or an emergency.

Why it works

  • 275A continuous rating: Handles high-demand electrical systems with confidence.
  • Wide voltage range: Compatible with 12V-48V battery setups.
  • Robust construction: Designed to withstand vibration, moisture, and harsh environments.
  • Simple rotary operation: Instant ON/OFF isolation with a smooth, positive action.
  • Compact design: Fits neatly into tight builds without sacrificing performance.

What's in the box

  • 1 x 275A High Current Battery Isolator Switch

How it works

Installed inline on the positive battery line, this isolator provides complete electrical disconnection when performing maintenance, storing your vehicle, or safeguarding critical circuits. With a strong rotary actuator and low-resistance internal contacts, it ensures reliable switching and long-term durability across a wide voltage range.

What it suits

  • Works with 12V, 24V, 36V, and 48V DC systems
  • Suitable for campervans, caravans, RVs, boats, 4WDs, agricultural and marine equipment
  • Ideal for isolating battery banks, inverters, chargers, fuse systems, compressors & high-load accessories

Fitting it

Difficulty: 3/5 (Moderate). Requires correct cabling, terminal crimping, and secure mounting.

Features

  • High-capacity switching for modern electrical systems
  • Rotary ON/OFF actuator for fast isolation
  • Heavy-duty terminal posts for secure cable lugs
  • Vibration-resistant, weather-resistant housing
  • Suitable for surface or recessed mounting
  • Compact footprint for tight panel layouts

Specifications

Input Voltage 12-48V DC
Operation Mode ON-OFF
Continuous Current Rating 275A
Peak Current (30 sec) 600A (approx)
Number of Positions 2
Terminal Size M10 (3/8")
Actuator Type Rotary
Ingress Protection Rating IP66
Product Dimensions 68 x 68 x ~75mm
Mounting Style Surface or panel mount
Housing Material Reinforced composite
Reviews

What owners say

  • 5 stars: 11 (79%)
  • 4 stars: 3 (21%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
P
Paul Lewin

As advertised and quick delivery

G
Glenn Pickering

Excellent product and great service

R
RRW1901

Works perfectly

S
Steven Smith

Havent used let but easy quick purchase

L
Lincoln Judd

A Big switch for big cables. get yourself one, make the switch too!

S
Shayne Dickinson

Excellent service and product better than described
Good Value and good product

M
Mark Murray

The switch was mounted onto a panel before a inline fuse and after the battery connection. It was easy to mount, lined up well with the other items. It is easy to install and works well. A necessary item to have for electrical safety and future expansion.

R
RODNEY CLARK

Na

B
Billy Tehan

This was bitter sweet. The product and customer service were exceptional, but unfortunately Australia Post let the whole experience down by delivering almost 1 week later than expected. Package only had to travel from Geelong to Drysdale, Victoria. About a 20 minute drive. Unfortunately it went from Geelong to Melbourne Airport, then to Avalon. Stayed at avalon for almost 4 days and then only after I contacted the supplier and them putting in a request, I was notified than my package had been delayed.
Because I purchased over a certain amount I got free express post, but it definitely wasn’t express.
I’m still giving a 5 star review as the products were of very good quality and the customer service was amazing, will use this supplier again.

J
Justin

Great value fast delivery and fantastic service

M
Maria Papatodori-Ryan

compact and easy to mount.

C
Colin Bate

Perfect!! Just what I needed to up-grade my inverter system. Thankyou for a great product and super quick delivery. Cheers Colin

R
Ryan

Since I made the switch to this product I've never felt so isolated

J
John

Good transaction.

From the Treklo crew

G'day, we're Treklo

We're a handful of blokes and gals in Geelong who spend our weekends in utes, vans and campers. We got sick of 12V gear that gave up a few trips in, so we started making our own and running it in our own rigs first.

Not sure what you need? Flick us an email and one of us will sort you out. No sales script, just straight answers.

  • We run it ourselves

    Every bit of gear goes in our own rigs before it goes on the site.

  • Out the door today

    Order by 3pm AEST and it leaves Geelong the same day.

  • Sorted here if it plays up

    1 year Aussie warranty, handled by us, not a call centre.