UL 62841-4-3 PDF

1 Scope

This clause of Part 1 is applicable, except as follows:

Addition:

This document applies to the design of pedestrian controlled walk-behind

–

cylinder lawnmowers

;

and

–

rotary lawnmowers

equipped with

– metallic

cutting means

; and/or

– rigid non-metallic

cutting means

; and/or

– non-metallic

cutting means

with one or more cutting elements pivotally mounted on a generally circular drive unit, where these cutting elements rely on centrifugal force to achieve cutting, and have a kinetic energy for each single cutting element of greater than 10 J.

NOTE 101 Machines that have non-metallic cutting means and a kinetic energy for each single cutting element of less than or equal to 10 J are considered to be lawn trimmers.

This document does not apply to

– robotic lawnmowers;

– remote-controlled lawnmowers;

– flail mowers or flail-type attachments;

– scissors type lawnmowers;

– grassland mowers;

– sickle bar mowers;

– towed/semi-mounted grass-cutting machines;

– scrub-clearing machines;

– lawn trimmers and lawn edge trimmers;

– lawn edgers;

– grass trimmers;

– brush cutters;

– brush saws;

– agricultural mowers;

– trailing seat/sulky units;

– ride-on machines;

– non-powered lawnmowers;

– combustion engine powered lawnmowers;

– hybrid and fuel cell powered machines and associated charging systems; and

– garden tractors or their attachments.

NOTE 102 Robotic lawnmowers are covered by IEC 60335-2-107, and will be covered by a future part of IEC 62841.

NOTE 103 Lawn trimmers and lawn edge trimmers are covered by IEC 60335-2-91.

NOTE 104 Lawn trimmers, lawn edge trimmers, grass trimmers, brush cutters and brush saws will be covered by a future part of IEC 62841.

NOTE 105 Lawn edgers will be covered by a future part of IEC 62841.

Summary of Topics

This revision of ANSI/UL 62841-4-3 dated January 31, 2024 corrects references to Table 102 in 19.102.5.6 and 19.102.5.6.19.102.5.6DV. The reference to Table 102 reflects the May 20, 2022 proposal and what is published in IEC 62841-4-3, First Edition.

UL 62841-4-3 is an adoption of IEC 62841-4-3, First Edition, issued by the IEC November 2020. Please note that the National Difference document incorporates all of the U.S. national differences for UL 62841-4-3.