M37 TL  OMNI TRIACT-LOCK M37503-B (251005)

(EN) ENGLISH

Semi-circular double-locking connector for fastening 

a harness

- Connector, EN 6:  004 class B  

- Locking carabiner, EN  75: 998 Type B (basic).

Limitations on use

This connector is personal protective equipment (PPE) 

designed specifically for fastening a harness with 

 attachment points. The semi-circular part provides a place 

to attach lanyards and similar equipment. 

It can be used with personal fall protection systems such 

as fall arrest systems, work positioning systems, restraint 

systems and rescue systems. It can also be used for caving, 

climbing and mountaineering. 

This product must not be loaded beyond its strength rating, 

nor be used for any purpose other than that for which it is 

designed.

WARNING

Activities involving the use of this equipment are inherently 

dangerous. 

You are responsible for your own actions and decisions.

Before using this equipment, you must: 

- Read and understand all Instructions for use. 

- Get specific training in its proper use. 

- Become acquainted with its capabilities and limitations. 

- Understand and accept the risks involved.

Failure to heed any of these warnings may result in severe 

injury or death.

Responsibility

WARNING: specific training is essential before use. 

This product must only be used by competent and 

responsible persons, or those placed under the direct visual 

control of a competent and responsible person. 

Gaining an adequate apprenticeship in appropriate techniques 

and methods of protection is your own responsibility. You 

personally assume all risks and responsibilities for all 

damage, injury or death which may occur during or following 

incorrect use of our products in any manner whatsoever. 

If you are not able, or not in a position to assume this 

responsibility or to take this risk, do not use this equipment.

Two documents

- The INSTRUCTIONS FOR USE describe the basic uses for 

which the product was designed. 

- The PRODUCT EXPERIENCE on the Petzl Web site (www.

petzl.com) describes other ways in which the product can 

be used, as well as incorrect uses and/or known errors 

associated with its use. 

Only the techniques shown in the diagrams that are not 

crossed out and/or do not display a skull and crossbones 

symbol are authorized. Check our Web site (www.petzl.c om) 

regularly to find the latest versions of these documents. 

Contact PETZL if you have any doubt or difficulty 

understanding these documents.

Nomenclature of parts

() Body, () gate, () hinge, (4) locking sleeve, (5) Keylock, 

(6) Keylock slot. 

Principal materials: aluminum alloy.

Inspection, points to verify

Before each use

Make sure the body, gate, and locking sleeve are free of any 

cracks, deformation, corrosion, etc. Open the gate and verify 

that it closes and locks itself automatically when released. 

The Keylock slot must not be blocked by foreign matter (dirt, 

pebble, ice, etc.).

During each use

It is important to regularly inspect the condition of the 

product and its connections with the other equipment in the 

system. Make sure that the various pieces of equipment in the 

system are correctly positioned with respect to each other. 

Consult the details of the inspection procedure to be carried 

out for each item of PPE on the Web at www.petzl.com/ppe or 

on the PETZL PPE CD-ROM. 

Contact PETZL if there is any doubt about the condition of 

this product. 

Retire the equipment if it shows any sign of reduced strength 

or impaired function. Destroy retired equipment to prevent 

further use.

Compatibility

A connector must be compatible with the equipment to which 

it is attached (shape, size, etc.). An incompatible connection 

can cause accidental disconnection, breakage, or affect the 

safety function of another piece of equipment. 

WARNING: the connector’s strength can be reduced if it is 

attached to an element of the system that is too large (e.g. 

wide webbing, large bars, etc.). 

Contact Petzl if you are uncertain about the compatibility of 

your equipment.

How to use this equipment

Diagram 1. Manipulation
Diagram 2. Installation on the harness

Use the connector to fasten together the two attachment 

points of the harness. To help prevent the equipment placing 

a load on the gate, always position the gate under the two 

attachment points and put the equipment (lanyards and 

similar) on the semi-circular part, so that the equipment is 

separated from the gate by the harness attachment points. 

We recommend that you adjust the harness so that the 

connector is held tightly between the two attachment points. 

This helps hold the connector in the correct position so that it 

can be properly loaded in the three directions shown. 

- This connector must only be used with the gate closed and 

locked; its strength is greatly reduced when the gate is open. 

Check the connector regularly to verify that it is securely 

locked, and lock it manually if necessary. 

Foreign objects such as mud, sand, paint, ice, dirty water, etc. 

can prevent the automatic locking system from working. 

The connector is strongest when closed and loaded from 

the inside to the outside (loaded triaxially, or along the major 

axis - see drawing). Any other loading reduces its strength. 

- Do not allow anything to obstruct the free movement of the 

carabiner; any constraint or external pressure is dangerous.

WARNING DANGER OF DEATH

Any external pressure on the gate (with a descender, for 

example) is dangerous.

The locking sleeve can break and the gate can come open, 

allowing the device or rope to detach itself from the carabiner.

Anchors

Work at height

The anchor point of the system should preferably be 

located above the user’s position and must conform to 

the requirements of the EN 795 standard, in particular the 

minimum strength of the anchor must be 0 kN.

Sport

Respect the rules of the activity. 

Consult the Instructions for use for the anchors you are 

using.

Precautions

- Users must be medically fit for activities at height. 

WARNING inert suspension in a harness can result in serious 

injury or death.  

- You must have a rescue plan and the means to rapidly 

implement it in case of difficulties encountered while using 

this equipment. This implies an adequate training in the 

necessary rescue techniques. 

- Take care to minimize the potential for falls and the height of 

any potential fall. 

- The clearance under the user must be sufficient to prevent 

him from striking an obstacle in case of a fall (the length of 

the connector can influence the height of a fall). 

- You must check to ensure that the product markings remain 

legible during the entire lifetime of the product. 

- You must verify the suitability of this equipment for use 

in your application with regard to applicable governmental 

regulations and other standards on occupational safety. 

- The instructions for use for each item of equipment used in 

conjunction with this product must be respected. 

- The instructions for use must be provided to users of this 

equipment. If the equipment is re-sold outside the original 

country of destination the reseller shall provide these 

instructions in the language of the country in which the 

product is to be used.

General information

Lifetime

Maximum lifetime of Petzl products: 0 years, taking 

into account the development of new techniques and the 

compatibility of products with other products. 

The lifetime is difficult to predict without taking into account 

the conditions of use. It depends on the intensity and 

frequency of use, and on the environment where the product 

is used.  

To prolong the life of this product, take care when 

transporting and using it. Avoid impacts, and rubbing against 

abrasive surfaces or sharp edges, etc. (list not exhaustive). 

Certain environmental factors will greatly accelerate wear: 

salt, sand, snow, ice, moisture, chemicals, etc. (list not 

exhaustive). 

For your safety, in addition to following the «Inspection points 

to verify before, during, and after each use», the equipment 

must undergo an in-depth inspection by a competent 

inspector. 

This inspection must be performed at least once every 

 months.  

The frequency of the in-depth inspection depends on the 

frequency, intensity, and type of use of the equipment. 

For better control of your equipment, we advise you to keep 

an «inspection record» for each product. 

It is preferable to issue new equipment to each user of PPE so 

that he/she will be able to know its entire usage history. 

WARNING, an exceptional event can reduce the lifetime of the 

product to one single use. For example, the product is used 

to arrest a major fall, there is a major impact on the product, 

it is exposed to extreme temperatures, etc. The resulting 

deterioration may not be visible on the product.

Modifications, repairs

Any modification, addition to, or repair of the equipment other 

than that authorized by Petzl is prohibited due to the risk of 

reducing the effectiveness of the equipment.

Guarantee

This product is guaranteed for  years against any faults in 

materials or manufacture. Exclusions from the guarantee: 

normal wear and tear, oxidation, modifications or alterations, 

incorrect storage, poor maintenance, damage due to 

accidents, to negligence, or to improper or incorrect usage.

PETZL is not responsible for the consequences, direct, 

indirect or accidental, or any other type of damage befalling or 

resulting from the use of its products.