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Ohm Assisted Braking Resistor

4.5 out of 5 stars
6 Reviews

Out of Stock

Don't worry though, we have a lot more Belay & Rappel Devices in stock than that.

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Why We Like The Ohm Assisted Braking Resistor

Edelrid's Ohm Assisted Braking Resistor is unlike anything the climbing community has seen before, and it drastically increases safety for lighter belayers and heavier climbers. When clipped to the first bolt or placement, the Ohm increases rope friction so belayers don't fly in the air when the climber falls or lowers. This device doesn't interfere with rope handling whether it's the lead climber clipping or the belayer taking. When heavier climbers fall on the first piece, the most likely result is a ground fall, unless the first piece has an Ohm attached to it. Edelrid made this device compatible with any belay device and any rope between an 8.6 or 11mm diameter.


  • Assisted Braking Resistor helps light belayers and heavy climbers
  • Device increases rope friction when clipped to the first bolt
  • Eases catching falls and lowering climbers
  • Rope handling is unaffected for leader and belayer
  • Significantly reduces the risk of ground falls
  • Compatible with most ropes and every belay device
  • Recommended weight difference (lead climber > belayer) 22 - 88lb
  • Minimum belayer weight: 88lb
  • Item #ELR003B
stainless steel, plastic
assisted brake
Rope Diameter
8.6 - 11mm
Claimed Weight
1lb .6oz
Manufacturer Warranty

Overall Rating

4.5 based on 6 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 5 reviews

Fits True To Size

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Runs smallTrue to sizeRuns large

What do you think about this product?


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2 out of 5 stars

November 24, 2023

Giveth and Taketh

I've used it several times

This device adds friction to the rope system, and that goes both ways. This is definitely adds security when a sport climb is hard off the start with a big weight difference between climber and belayer. When the route is stepper or has a low bulge, the rope hangs in the friction groove when slack. I’ve been short roped when climbing and clipping from this. Also, had a loop of rope build up between the Ohm and the second QuickDraw because the slack would fall thru the Ohm, down to my belayer. The Ohm does what it’s suppose to do, but it has hindered my performance, even high up on a right. Maybe extending it will help, but when you’re already 6 bolts up, it is a little too late for that. Not for the performance minded and a great way to blow an onsite.

rmp2546899 r
5 out of 5 stars

September 26, 2022

I’m small he’s big

I've put it through the wringer
Size Bought:
4' 11"

This thing has made my (a <100lb female) climbing trips with men so much safer, easier, less stressful, and more fulfilling. Now both parties can really push it and not worry about taking falls. Lowering men is 1000x easier as well where I would previously struggle to stay grounded or to lower them at a consistent pace.

casp328656 c
5 out of 5 stars

February 5, 2021


I've used it several times
Size Bought:
5' 2"

If you have a big weight difference between the belayer and climber GET THIS! It's incredible how much force this takes off the belayer on a fall! I weight 50lbs less than my partner and it has made belaying them so much safer and comfortable. Easy to use once you understand the setup, 1st clip and it's done. No more flying feet in the air when your climber falls!

Mickell M
5 out of 5 stars

November 5, 2020

Does what it should

I've put it through the wringer

My girlfriend is a good 60lbs lighter than me without gear. This does it's job and helps her be more confident. We don't use it as much anymore because it's helped train her confidence and she feels good without it.

Kyle M
5 out of 5 stars

August 30, 2020

Save your belayionship!

I've put it through the wringer

Works great with my lighter climbing partners, and gives you more confidence to go for it, knowing that your fall won't result in smashing your belayer into the wall. I've heard of people breaking toes that way.

Greg T
5 out of 5 stars

June 9, 2020


I've put it through the wringer

I got this for my brother and his wife. They are very different in weight and this device makes a up the difference. As far as use goes it is pretty straight forward to use. We clip it to the first anchor so we connect it to the rope while on the ground so all you have to do it just take it off your harness and clip it to the wall and you are all set to climb, and your stress can be focused on finishing the climb and not hitting the ground because you weight more than the person belaying you. A must purchase!

Kristopher K