Canadian Standards Association (CSA) Hearing Protection Device Ratings

SUBJECT: CANADIAN STANDARDS ASSOCIATION (CSA) HEARING PROTECTION DEVICE RATINGS
ORIGIN: Moldex® Technical Services Department
REVIEWED/UPDATED: July 2020

Overview

You will see the CSA Class rating on some of our literature. This is a method of rating hearing protection devices that are used in Canada. It is a simple system which is based on the same laboratory tests that are performed on our hearing protectors to obtain NRRs in the United States. The system provides guidance to the user for choosing the appropriate hearing device for a certain level of noise exposure.

Each hearing protection device is rated A, B, or C. The A and B Class may also have an L associated with it. Therefore, the following Classes of hearing protectors are A, AL, B, BL, or C.

The L classification associated with Class A or B (i.e. AL or BL) means that the hearing protection device attenuates at least 20dBA when tested at 125Hz. This is an important factor when choosing hearing protection for low frequency noise.

Lex, 8h (dBA) Recommended Class
< C
> 90 (up to and including 95) B or BL
> (up to and including 105) A or AL
> 105 Dual*

* Dual hearing protection shall be used. A minimum of a Class B earmuff and a Class A earplug shall be used. See Z94.2-14 for details.

As always, these ratings, just like NRR, are to be used by the end user as a guide to selecting the proper hearing protection device. The Classes are based on laboratory tests and actual noise reduction achieved by any individual depends upon many factors including proper use of the device, training, maintenance, etc.

Moldex® HPD Part #

Description

NRR

CSA Class

6100

M1 Premium Earmuff

29

AL

6105

Hygiene Kit

N/A

N/A

6109

Special Ops® M1 Premium Earmuff-Camo

29

AL

6120

MX-5 Earmuff

27

AL

6125

MX-5 Earmuff Hygiene Kit

N/A

N/A

6130

MX-6 Earmuff

30

AL

6135

MX-6 Earmuff Hygiene Kit

N/A

N/A

6200

M2 Multi-Position Earmuff

26(OH) 24(BN,UC)

A

6201

Z2 Multi-Position Earmuff

25(OH) 23(BN,UC)

A

6209

Special Ops® M2 Multi-Position Earmuff-Camo

26

A

6300

M3 Cap-Mount Earmuff

24

A

6400

Rockets® Reusable Ear Plugs – Uncorded

27

AL

6404

Rockets® Reusable Ear Plugs-Corded w/o Pocket-Pak®

27

AL

6405

Rockets® Reusable Ear Plugs-Corded

27

AL

6415

Rockets® Detectable Reusable Ear Plugs-Corded

27

AL

6420

Rockets® Reusable Ear Plugs-Cloth Corded

27

AL

6445

Glide® Trio

27

AL

6450

Jetz®, Uncorded

27

BL

6455

Jetz®, Corded

27

BL

6480

Special Ops® Rockets® Reusable Ear Plugs-Uncorded

27

AL

6485

Special Ops® Rockets®  Reusable Ear Plugs-Corded

27

AL

6487T

Small Replacement Tips, BattlePlugs®

9/24

C/BL

6488T

Medium Replacement Tips, BattlePlugs®

9/24

C/BL

6489T

Large Replacement Tips, BattlePlugs®

9/24

C/BL

6497

BattlePlugs®, Small

9/24

C/BL

6498

BattlePlugs®, Medium

9/24

BL

6499

BattlePlugs®, Large

9/24

C/BL

6490

Comets® Reusable Ear Plugs

25

BL

6495

Comets®, Corded

25

BL

6500

Rock Band® Canal Cap

22

BL

6504

Replacement Pods and Neck Cord for Jazz Band®

N/A

6506

Jazz Band® Canal Cap

22

BL

6600

Softies® Disposable Ear Plugs-Uncorded

33

AL

6604

SparkPlugs® Disposable Ear Plugs-Uncorded

33

AL

6608

Special Ops® Camo Plugs® Disposable Ear Plugs-Uncorded

33

AL

6609

Special Ops® Camo Plugs® Disposable Ear Plugs-Corded

33

AL

6615

SparkPlugs® Disposable Metal Detectable Ear Plugs-Corded

33

AL

6620

Goin’ Green® Disposable Ear Plugs-Uncorded

33

AL

6622

Goin’ Green® Disposable Ear Plugs-Corded

33

AL

6630

Meteors®, Small Ear Plugs-Uncorded

28

AL

6632

Meteors®, Small Ear Plugs-Corded

28

AL

6634

PlugStation® 250 Pairs of Meteors®, Small

28

AL

6644

PlugStation® 250 Pairs of SparkPlugs®

33

AL

6645

PlugStation® 500 Pairs of SparkPlugs®

33

AL

6646

PlugStation® 250 Pairs of Goin’ Green®

33

AL

6647

PlugStation® 500 Pairs of Goin’ Green®

33

AL

6648

Special Ops® PlugStation® 500 Pairs Camo Plugs®

33

AL

6650

Softies® Disposable Ear Plugs-Corded

33

AL

6654

SparkPlugs® Disposable Ear Plugs-Corded

33

AL

6770

Flip to Listen® Dual Mode Earplugs

4/24

C/BL

6800

Pura-Fit® Disposable Ear Plug-Uncorded

33

AL

6820

Mellows®, Uncorded

30

AL

6840

Mellows®, Corded

30

AL

6844

PlugStation® 250 Pairs of Pura-Fit®

33

AL

6845

PlugStation® 500 Pairs of Pura-Fit®

33

AL

6846

Mellows® PlugStation®, Small

30

AL

6847

Mellows® PlugStation®, Large

30

AL

6870

Meteors® Ear Plugs-Uncorded

33

AL

6875

PlugStation® 500 Pairs of Meteors®

33

AL

6880

SparkPlugs® PlugStation®, Corded

33

AL

6881

SparkPlugs®, Metal Detectable, PlugStation®, Corded

33

AL

6882

Pura-Fit®, PlugStation®, Corded

33

AL

6900

Pura-Fit® Disposable Ear Plug-Corded

33

AL

6940

Glide® Foam Twist-In Earplugs, without Cord

30

AL

6945

Glide® Foam Twist-In Earplugs, with Cord

30

AL

6970

Meteors® Ear Plugs-Corded

33

AL

WARNING: The information contained in this Tech Brief is dated and was accurate to the best of Moldex’s knowledge, on the date above. It is not meant to be comprehensive, nor is it intended to be used in place of the warning/use instructions that accompany Moldex respirators. Outside of the USA, check with all applicable and local government regulations.

©2020 Moldex-Metric, Inc. All Rights Reserved.

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