IEC 62841-4-1:2017

Overview

IEC 62841-4-1:2017 (consolidated edition 1.1 with AMD1:2024) is the international safety standard that defines particular requirements for chain saws driven by electric motors (hand‑held and transportable). It applies to single‑operator chain saws designed for cutting wood where the operator holds the rear handle with the right hand and the front handle with the left. The document supplements and modifies general requirements in IEC 62841-1:2014 and is intended for use by manufacturers, testing bodies and regulators involved in chain saw design, testing and conformity assessment.

Key topics and requirements

This Part 4-1 covers a comprehensive set of safety and test topics, including:

• Scope and classification of chain saw types and excluded equipment (e.g., chain saws for tree service per ISO 11681-2 and pole‑mounted pruners).
• Marking, user instructions and safety signs, including informative annexes with example instructions for felling, limbing and cross‑cutting.
• Mechanical hazards and strength requirements (chain guarding, kickback mitigation, guards and structural integrity).
• Electrical safety: protection against access to live parts, starting controls, input/current limits, insulation, creepage distances and earthing provisions.
• Environmental resistance: moisture resistance, resistance to heat/fire and corrosion, with annexes on moisture classifications for chain saws and battery packs.
• Endurance and abnormal operation tests, overload protection, leakage current measurement and component requirements.
• Noise and vibration measurement procedures (informative annex) for user exposure information.
• Battery tool specifics: normative annexes address battery packs, tools with integrated battery or mains connection and terminal/contact requirements.
• Testing guidance and test assemblies, including figures and tables for nomenclature, balance, chain geometry and test probes.

Practical applications

• Guides product design: ensures chain saws include required safety features (electrical insulation, chain brakes, guards, labeling).
• Supports conformity assessment: provides test procedures used by laboratories and certification bodies to verify compliance.
• Informs user documentation: defines required markings and instruction contents to improve safe operation and maintenance.
• Affects battery and corded chain saw models: annexes detail requirements specific to battery-powered chain saws and hybrid configurations.

Who uses this standard

• Chain saw manufacturers and designers
• Independent testing laboratories and certification bodies
• Product safety and compliance engineers
• National standards committees and regulatory agencies
• Technical writers preparing user manuals and safety labels

Related standards

• IEC 62841-1:2014 (general safety for motor‑operated hand‑held tools) - this Part 4‑1 is to be used in conjunction with Part 1.
• ISO 11681-2 (tree service chain saws) - referenced as excluded in scope.

Keywords: IEC 62841-4-1, chain saw safety standard, chain saw testing, battery chain saw, IEC chain saw standard, motor‑operated hand‑held tools.